Download 0073 Cardiac Event Monitors

Number: 0073
Policy
*Please see amendment for Pennsylvania Medicaid at the end of
this CPB.
I. Aetna considers external intermittent cardiac event monitors
(i.e., external loop recorders) and external intermittent
cardiac event monitors with real‐time data transmission and
analysis (e.g., eCardio eVolution) medically necessary for any
of the following conditions:
Last Review 11/01/2016
Effective: 12/04/1995
Next Review: 01/26/2017
Review History
Definitions
A. To document a suspected arrhythmia in persons with
a non‐diagnostic Holter monitor or 48 hour
telemetry (e.g., suspected atrial fibrillation as cause of
cryptogenic stroke), or in persons whose symptoms occur
infrequently (less frequently than daily) such that the
arrhythmia is unlikely to be diagnosed by Holter
monitoring (see CPB 0019 ‐ Holter
Monitors (0019.html)); or
B. To document ST segment depression for suspected
ischemia; or
C. To document the benefit after initiating drug therapy for
an arrhythmia; or
D. To document the recurrence of an arrhythmia after
discontinuation of drug therapy; or
E. To document the results after an ablation procedure for
Clinical Policy Bulletin Notes
arrhythmia; or
F. To evaluate syncope and lightheadedness in persons with
a non‐diagnostic Holter monitor or 48 hour telemetry, or
in persons whose symptoms occur infrequently (less
frequently than daily) such that the arrhythmia is unlikely
to be diagnosed by Holter monitoring.
Aetna considers external loop recorders experimental and
investigational for all other indications because their
effectiveness for indications other than the ones listed above
has not been established.
II. Aetna considers mobile cardiovascular telemetry (MCT)
(e.g., CardioNet Mobile Cardiac Outpatient Telemetry
(MCOT) Service; Cardiac Telecom and Health Monitoring
Services of America’s Telemetry @ Home Service;
Heartbreak ECAT (External Cardiac Ambulatory Telemetry)
(Med net Healthcare Technologies), HEARTLink™ II ECG
Arrhythmia Detector and Alarm System by Cardiac Telecom
Corporation, LifeStar ACT by LifeWatch®, Inc., a subsidiary of
Card Guard Scientific, SAVI® (Mediacom), Telemetry™ (Scott
Care Cardiovascular Solutions) and Trove® (Biomedical
Systems)) medically necessary for evaluation of recurrent
unexplained episodes of pre‐syncope, syncope, palpitations,
or dizziness when both of the following criteria are met:
A. Evaluation of recurrent unexplained episodes of
presyncope, syncope, palpitations or dizziness when both
of the following are met:
1. A cardiac arrhythmia is suspected as the cause of the
symptoms; and
2. Members have a non‐diagnostic Holter monitor or 48
hour telemetry, or symptoms occur infrequently (less
frequently than daily) such that the arrhythmia is
unlikely to be diagnosed by Holter monitoring; or
B. For evaluation of members with suspected atrial
fibrillation as a cause of cryoptogenic stroke who have
had a nondiagnostic Holter monitor or 48 hour telemetry.
Aetna considers MCT experimental and investigational for
other indications because its effectiveness for indications
other than the ones listed above has not been established.
III. Aetna considers an implantable loop recorder (e.g., Reveal
Insertable Loop Recorder by Medtronic, Inc.) medically
necessary for the following indications:
A. For evaluation of recurrent unexplained episodes of
pre‐syncope, syncope, "seizures", palpitations, or
dizziness when both of the following criteria are met:
1. A cardiac arrhythmia is suspected as the cause of the
symptoms; and
2. Either of the following criteria is met:
a. For persons with heart failure, prior myocardial
infarction or significant ECG abnormalities (see
appendix), noninvasive ambulatory monitoring,
consisting of 30‐day presymptom external loop
recordings or MCT, fails to establish a definitive
diagnosis; or
b. For persons without heart failure, prior myocardial
infarction or significant ECG abnormalities (see
appendix), symptoms occur so infrequently and
unpredictably (less frequently than once per
month) that noninvasive ambulatory monitoring
(MCT or external loop recorders) are unlikely to
capture a diagnostic ECG.
B. For evaluation of members with suspected atrial
fibrillation as a cause of cryoptogenic stroke who have
had a nondiagnostic Holter monitor or 48 hour telemetry.
IV. Aetna considers implantable loop recorders experimental
and investigational for all other indications because their
effectiveness for indications other than the ones listed above
has not been established.
Note: Depending on clinical presentation, the individual may
have had a negative or non‐diagnostic electrophysiological
study (EPS); however, EPS is no longer considered a
prerequisite to insertion of an implantable loop recorder.
V. Aetna considers the use of long‐term (greater than 48
hours) external ECG monitoring by continuous rhythm
recording and storage (e.g., Zio Patch) medically necessary
for the following indications:
A. To evaluate syncope and lightheadedness in persons with
a non‐diagnostic Holter monitor or 48 hour telemetry, or
in persons whose symptoms occur infrequently (less
frequently than daily) such that the arrhythmia is unlikely
to be diagnosed by Holter monitoring (see CPB 0019
‐ Holter Monitors (0019.html)); or
B. To document an arrhythmia in persons with
a non‐diagnostic Holter monitor or 48 hour telemetry, or
in persons whose symptoms occur infrequently (less
frequently than daily) such that the arrhythmia is unlikely
to be diagnosed by Holter monitoring.
VI. Aetna considers the following experimental and
investigational because their clinical value has not been
established.
A. AliveCor Heart Monitor (iPhoneECG)
B. BIOTRONIK BioMonitor
C. Mobile patient management systems (eg, BodyGuardian
Remote Monitoring System)
D. Self‐monitoring ECG technologies or the ViSi Mobile
Monitoring System.
Requests for cardiac event monitoring that do not meet the
above criteria and requests for repeat studies within 1 year of a
previous study are subject to medical necessity review.
Background
Cardiac event monitors are small portable devices worn by a
patient during normal activity for up to 30 days. The device has
a recording system capable of storing several minutes of the
individual's electrocardiogram (EKG) record. The patient can
initiate EKG recording during a symptomatic period of
arrhythmia. Cardiac event monitors have primarily been used
to diagnose and evaluate cardiac arrhythmias. These monitors
are particularly useful in obtaining a record of arrhythmia that
would not be discovered on a routine EKG or an arrhythmia that
is so infrequent that it is not detected during a 24‐hour period
by a Holter monitor.
Two different types of cardiac event monitors are available. Pre‐
symptom (looping memory) event monitors are equipped with
electrodes attached to the chest, and are able to capture EKG
rhythms before the cardiac event monitor is triggered (pre‐
symptom recording) (Healthwise, 2003). This feature is
especially useful for people who lose consciousness when
arrhythmias occur.
Post‐symptom event monitors do not have chest electrodes
(Healthwise, 2003). One type of post‐symptom event monitor
is worn on the wrist. When symptoms occur, the patient
presses a button to trigger an EKG recording. Another type of
post‐symptom event monitor is a device that the patient carries
within easy reach. When symptoms occur, the patient presses
the electrodes on the device against their chest and presses a
button to trigger the EKG recording.
Cardiac event monitors have been developed with automatic
trigger capabilities, which are designed to automatically trigger
an EKG recording when certain arrhythmias occur. Automated
trigger cardiac event monitors are thought to be more sensitive,
but less specific, than manually‐triggered cardiac event
monitors for significant cardiac arrhythmias. The simplest
automatic trigger cardiac event monitors detect a single type of
arrhythmia (e.g., atrial fibrillation), whereas more sophisticated
monitors are capable of detecting several types of arrhythmias
(e.g., PDSHEART, 2001; Instromedix, 2002; LifeWatch, 2004;
Medicomp, 2005; eCardio Diagnostics, 2004). Automatic trigger
cardiac event monitors may be especially useful for persons
with asymptomatic arrhythmias, persons with syncope,
and other persons (children, mentally retarded persons) who
cannot reliably trigger the monitor when symptoms occur.
Cardiac event monitors may come with 24‐hour remote
monitoring. Usually, EKG results are transmitted over standard
phone lines at the end of each day to an attended monitoring
center, where a technician screens EKG results and notifies the
patient’s physician of any significant abnormal results, based on
predetermined notification criteria. Newer cardiac event
monitors allow EKG results to be transmitted via e‐mail over the
internet (CardioPhonics, 2006). Some cardiac event monitors
allow the patient to transmit EKG over standard telephone lines
to the attended monitoring center immediately after symptoms
occur (e.g., Versweyveld, 2001; Transmedex, 2001); other
cardiac event monitors have been adapted to also allow
immediate transmission of EKG results by cellular telephone
(Philips, 2003; Schiller, 2004; CRY, 2004; HealthFrontier, 2004). If
test results suggest a life‐threatening emergency, monitoring
center personnel may instruct the patient to go to the hospital
or call an ambulance (Daja et al, 2001). The development of
mobile technology may extend the use of cardiac event
monitors from primarily diagnostic purposes to use primarily as
an alarm system, to allow rapid intervention for the elderly and
others at increased risk of cardiac events (Cox, 2003; Lloyds,
1999).
Standard cardiac event monitors come with 5 to 10 mins of
memory. Cardiac event monitors with expanded memory
capabilities have been developed, extending memory from
approximately 20 to 30 mins (Instromedix, 2002; LifeWatch,
2002; Philips Medical Systems, 2003; PDSHeart, 2006) to as
much as several hours (CardioPhonics, 2001; CardioPhonics,
2006). Extended memory is especially useful for automatic
trigger cardiac event monitors, because the automatic trigger
may not reliably discriminate between clinically significant
arrhythmias (true positives) and EKG artifacts (false positives),
such that a more limited memory would be filled with false
positives.
Mobile cardiovascular telemetry (MCT) refers to non‐invasive
ambulatory cardiac event monitors with extended memory
capable of continuous measurement of heart rate and rhythm
over several days, with transmission of results to a remote
monitoring center. Mobile cardiovascular telemetry is similar to
standard cardiac telemetry used in the hospital setting.
CardioNet (Philadelphia, PA) has developed an MCT device with
extended memory, automatic ECG arrhythmia detector and
alarm that is incorporated into a service that CardioNet has
termed “Mobile Cardiac Outpatient Telemetry (MCOT).” The
CardioNet device couples an automatic arrhythmia detector
and cellular telephone transmission so that abnormal EKG
waveforms can automatically be transmitted immediately to
the remote monitoring center. The CardioNet device also has
an extended memory characteristic of digital Holter monitors;
the CardioNet device is capable of storing up to 96 hours of EKG
waveforms. These ECG results are transmitted over standard
telephone lines to the remote monitoring center at the end of
each day. The physician receives both urgent and daily reports.
The manufacturer states that an important advantage of MCOT
is that it is capable of detecting asymptomatic events and
transmitting them immediately, even when the patient is away
from home, allowing timely intervention should a life‐
threatening arrhythmia may occur. The CardioNet device’s
extended memory allows the physician to examine any portion
of the ECG waveform over an entire day. This extended
memory ensures that it does not fill with EKG artifact (false
positives) where the CardioNet’s automated ECG trigger is
unable to reliably discriminate between artifact and significant
arrhythmias (true positives). Potential uses of MCOT include
diagnosis of previously unrecognized arrhythmias,
ascertainment of cause of symptoms, and initiation of anti‐
arrhythmic drug therapy.
The CardioNet ambulatory ECG arrhythmia detector and alarm
is cleared for marketing by the Food and Drug Administration
(FDA) based on a 510(k) premarket notification due to the FDA’s
determination that the CardioNet device was substantially
equivalent to devices that were currently on the market. The
CardioNet device is not intended for monitoring patients with
life‐threatening arrhythmias (FDA, 2002).
There is reliable evidence that MCT is superior to patient‐
activated external loop recorders for diagnosing cardiac
arrhythmias. Rothman et al (2007) reported on a randomized
controlled clinical study comparing the diagnostic yield of MCT
(CardioNet MCOT) to patient‐activated external looping event
monitors for symptoms thought to be due to an arrhythmia.
Subjects with symptoms of syncope, pre‐syncope, or severe
palpitations who had a non‐diagnostic 24‐hour Holter monitor
were randomized to MCT or an external loop recorder for up to
30 days. The primary endpoint was the confirmation or
exclusion of a probable arrhythmic cause of their symptoms. A
total of 266 patients who completed the monitoring period
were analyzed. A diagnosis was made in 88 % of MCT subjects
compared to 75 % of subjects with standard loop recorders (p =
0.008). The authors noted that cardiac arrhythmias without
associated symptoms, but nonetheless capable of causing the
index symptoms, were the major determining factor accounting
for the difference in diagnostic yield of MCT and patient‐
activated external loop recorders.
There is also evidence to suggest that MCT is superior to auto‐
triggered external loop recorders for diagnosing symptoms
thought to be due to a cardiac arrhythmia. Loop recorders with
auto‐trigger algorithms have been used to improve the
diagnostic yield of event monitors (Strickberger et al, 2006).
Rothman et al (2007) explained that their study of MCT was not
designed to evaluate auto‐triggered loop recorders, as this type
of recorder was not available at all study sites. However, 2 of
the 17 study sites used looping event recorders with an auto‐
trigger algorithm in all of their randomized patients (Rothman
et al, 2007). A total of 49 subjects, or 16 % of the
randomized population were from these 2 sites. In a post‐hoc
analysis of this subgroup of patients, a diagnosis was made in
88 % of MCT subjects compared to 46 % of patients with auto‐
triggered external loop recorders. One possible factor
accounting for the poor diagnostic yield of the auto‐trigger loop
recorders employed in this study is that they may have had
limited memory which quickly filled with artifact. In addition,
the CardioNet MCOT device used in this study uses dual EKG
leads, whereas the auto‐trigger loop recorders may have used
single leads.
One limitation of the study by Rothman et al (2007) was
the lack of blinding of the investigators or subjects. The
investigators sought to overcome this bias by having all
monitoring strips and diagnoses evaluated by another
electrophysiologist that was blinded to assignment. Another
limitation of this study is that it did not explore the potential for
work‐up bias; the study did not describe whether any of the
study subjects had ever had previous work‐ups for cardiac
arrhythmias that included evaluation with an external loop
recorder.
A number of retrospective uncontrolled studies have been
published that have described the experience with MCT. Olson
et al (2007) retrospectively examined the records of 122
consecutive patients evaluated using MCT for palpitations (n =
76), pre‐syncope/syncope (n = 17), or to monitor the
effectiveness of anti‐arrhythmic therapy (n = 29). The
investigators reported on the proportion of patients with
syncope/pre‐syncope and palpitations whose diagnosis was
established by MCT, and the proportion of patients monitored
for medication titration who had dosage adjustments. This
study is of similar design to an earlier study by Joshi et al
(2005), which reported on the first 100 consecutive patients
monitored by MCT.
Vasamreddy et al (2006) reported on a small (n = 19)
prospective exploratory study examining the feasibility and
results of using MCT for monitoring patients with atrial
fibrillation before and after catheter ablation for atrial
fibrillation. The authors concluded that MCT has potential
utility for this use. The authors noted, however, that poor
patient compliance with the study's MCT monitoring protocol
represented an important limitation; only 10 of 19 subjects that
were enrolled in the study completed the protocol, which
required subjects to wear the MCT monitor 5 days per month
for 6 months following the ablation.
Cardiac Telecom Corporation (Greensburg, PA) and Health
Monitoring Services of America (Boca Raton, FL) have
developed an MCT service called "Telemetry @ Home" that
shares many similarities to the CardioNet Service. The
Telemetry @ Home Service utilizes Cardiac Telecom’s Heartlink
II Monitor, which has automatic arrhythmia detection and
extended memory. The Heartlink II Monitor is able to wirelessly
transmit abnormal EKG waveforms from a base station in the
home to a remote monitoring center. Unlike the CardioNet
Service, the Heartlink II Monitor does not have a built‐in cellular
telephone, so that the monitor does not automatically transmit
abnormal waveforms when the patient is away from home out
of range of the base station. The Heartlink II Monitor was
cleared by the FDA based upon a 510(k) premarket notification.
Biowatch Medical (Columbia, SC) offers an MCT service called
"Vital Signs Transmitter (VST)" that shares many similarities to
other MCT services. According to the manufacturer, VST
provides continuous, real‐time, wireless ambulatory patient
monitoring of 2 ECG channels plus respiration and temperature
(Biowatch Medical. 2008; Gottipaty et al, 2008). The VST is a
wireless belt‐like device with non‐adhesive electrodes that is
worn around the patient's chest. The VST has an integrated
microprocessor and wireless modem to automatically detect
and transmit abnormal ECG waveforms. The monitor transmits
ECG data via an integrated cellular telephone, when activated
by the patient or by the monitor’s real‐time analysis software,
to a central monitoring station, where the tracing is analyzed by
technicians. The technicians can then notify the patient’s
physician of any serious arrhythmias, transmit ECG tracings, and
provide patient intervention if required. The monitoring center
also provides daily reports that can be accessed by the patient's
physician over the Internet. According to the manufacturer, a
new VST device is being developed that will also provide data
on the patient's oxygen saturation, blood pressure, and weight
(Biowatch Medical, 2008). The VST was cleared by the FDA
based on a 510(k) premarket notification.
Lifewatch Inc. (Rosemount, IL) has developed an MCT service
called LifeStar Ambulatory Cardiac Telemetry (ACT). The
LifeStar ACT is similar to the CardioNet MCOT in that it has
built‐in cellular transmission so that results can be transmitted
away from home. The LifeStar ACT cardiac monitoring system
utilizes an auto‐trigger algorithm to detect atrial fibrillation,
tachycardia, bradycardia, and pauses, and requires no patient
intervention to capture or transmit an arrhythmia when it
occurs. The device can also be manually triggered by the
patient during symptoms. Upon arrhythmia detection or
manual activation, the LifeStar ACT transmits data via the
integrated cellular telephone to LifeWatch, where the ECG is
analyzed. The LifeStar ACT has a longer continuous memory
loop that can be retrieved as needed by the monitoring center.
The LifeWatch ACT was cleared by the FDA based on a 510(k)
premarket notification.
A systematic evidence review of remote cardiac monitoring
prepared for the Agency for Healthcare Research and Quality by
the ECRI Evidence‐based Practice Center (AHRQ, 2007) reached
the following conclusions about the evidence for MCT: "This
study [by Rothman et al, 2007] was a high‐quality multicenter
study with few limitations. Therefore, the evidence is sufficient
to conclude that real‐time continuous attended monitoring
leads to change in disease management in significantly more
patients than do certain ELRs [external loop recorders].
However, because this is a single multicenter study, the
strength of evidence supporting this conclusion is weak. Also,
the conclusion may not be applicable to ELRs with automatic
event activation, as this model was underrepresented in the
RCT [by Rothman et al, 2007] (only 16 % of patients used this
model)."
The Zio Patch (iRhythm Technologies, Inc., San Francisco, CA) is
a recording device that provides continuous single‐lead ECG
data for up to 14 days (Mittal et al, 2011). The Zio Patch uses a
patch that is placed on the left pectoral region. The patch does
not require patient activation. However, a button on the patch
can be pressed by the patient to mark a symptomatic episode.
At the end of the recording period, the patient mails back the
recorder in a prepaid envolope to a central monitoring
station(Mittal et al, 2011). A report is provided to the ordering
physician within a few days. The manufacturer states that it is
indicated for use in patients who may be asymptomatic or who
may suffer from transient symptoms (e.g., anxiety, dizziness,
fatigue, light‐headedness, palpitations, pre‐syncope, shortness
of breath, and syncope). The Zio ECG Utilization Service (ZEUS)
system is a comprehensive system that processes and analyzes
received ECG data captured by long‐duration, single‐lead,
continuous recording diagnostic devices (e.g., the Zio Patch and
Zio Event Card). However, the clinical outcomes and cost‐
effectiveness of extended cardiac monitoring by means of the
Zito Patch, the ZEUS system and similar devices have not been
shown to be superior to other available approaches.
Mittal et al (2011) noted that "clinical experience [with the Zio
Patch] is currently lacking". The author stated that it is not
known how well patients can tolerate the patch for 1 to 2
weeks, and whether the patch can yield a high‐quality artifact‐
free ECG recording through the entire recording period. The
authors stated, furthermore, that "the clinical implications of
not having access to ECG information within the recording
period need to be determined".
Rosenberg et al (2013) compared the Zio Patch, a single‐use,
non‐invasive waterproof long‐term continuous monitoring
patch, with a 24‐hour Holter monitor in 74 consecutive patients
with paroxysmal atrial fibrillation (AF) referred for Holter
monitoring for detection of arrhythmias. The Zio Patch was
well‐tolerated, with a mean monitoring period of 10.8 +/‐ 2.8
days (range of 4 to 14 days). Over a 24‐hour period, there was
excellent agreement between the Zio Patch and Holter for
identifying AF events and estimating AF burden. Although
there was no difference in AF burden estimated by the Zio
Patch and the Holter monitor, AF events were identified in 18
additional individuals, and the documented pattern of AF
(persistent or paroxysmal) changed in 21 patients after Zio
Patch monitoring. Other clinically relevant cardiac events
recorded on the Zio Patch after the first 24 hours of monitoring,
including symptomatic ventricular pauses, prompted referrals
for pacemaker placement or changes in medications. As a
result of the findings from the Zio Patch, 28.4 % of patients had
a change in their clinical management. The authors concluded
that the Zio Patch was well‐tolerated, and allowed significantly
longer continuous monitoring than a Holter, resulting in an
improvement in clinical accuracy, the detection of potentially
malignant arrhythmias, and a meaningful change in clinical
management. Moreover, they stated that further studies are
necessary to examine the long‐term impact of the use of the
Zio Patch in AF management.
Turakhia and colleagues (2013) noted that although extending
the duration of ambulatory electrocardiographic monitoring
beyond 24 to 48 hours can improve the detection of
arrhythmias, lead‐based (Holter) monitors might be limited by
patient compliance and other factors. These researchers,
therefore, evaluated compliance, analyzable signal time,
interval to arrhythmia detection, and diagnostic yield of the Zio
Patch, a novel leadless, electrocardiographic monitoring device
in 26,751 consecutive patients. The mean wear time was 7.6 ±
3.6 days, and the median analyzable time was 99 % of the total
wear time. Among the patients with detected arrhythmias
(60.3 % of all patients), 29.9 % had their first arrhythmia and
51.1 % had their first symptom‐triggered arrhythmia occur after
the initial 48‐hour period. Compared with the first 48 hours of
monitoring, the overall diagnostic yield was greater when data
from the entire Zio Patch wear duration were included for any
arrhythmia (62.2 % versus 43.9 %, p < 0.0001) and for any
symptomatic arrhythmia (9.7 % versus 4.4 %, p < 0.0001). For
paroxysmal atrial fibrillation (AF), the mean interval to the first
detection of AF was inversely proportional to the total AF
burden, with an increasing proportion occurring after 48 hours
(11.2 %, 10.5 %, 20.8 %, and 38.0 % for an AF burden of 51 % to
75 %, 26 % to 50 %, 1 % to 25 %, and less than 1 %,
respectively). The authors concluded that extended monitoring
with the Zio Patch for less than or equal to 14 days is feasible,
with high patient compliance, a high analyzable signal time, and
an incremental diagnostic yield beyond 48 hours for all
arrhythmia types. These findings could have significant
implications for device selection, monitoring duration, and care
pathways for arrhythmia evaluation and AF surveillance.
Higgins (2013) stated that a number of substantial
improvements to the 60‐year old concept of the Holter monitor
have recently been developed. One promising advance is the
Zio Patch (iRhythm Technologies, Inc., CA), a small 2 × 5‐inch
patch, which can continuously record up to 14 days of a single
ECG channel of cardiac rhythm without the need for removal
during exercise, sleeping or bathing. Its ease‐of‐use, which
enables optimal long‐term monitoring, has been established in
the ambulatory setting, although some insurance carriers have
been reluctant to reimburse appropriately for this advance, an
issue characteristic of other heart monitors, treated as 'loss‐
leaders'. In this article, in addition to discussing possible
reasons for this reluctance, a novel model for direct‐ to‐
consumer marketing of heart monitoring, outside of the
traditional health insurance reimbursement model, is also
presented. Additional current and future advances in heart
rhythm recording are also discussed. Such potentially
revolutionary opportunities have only recently become possible
as a result of technologic advances.
The Center for Medicare and Medicaid Services (CMS) (2004)
has determined that an ambulatory cardiac monitoring device
or service is eligible for Medicare coverage only if it can be
placed into the following categories:
I. Patient/Event Activated Intermittent Recorders:
A. Pre‐symptom memory loop (insertable or non‐insertable)
Attended; Non‐
attended.
B. Post‐symptom (no memory loop)
Non‐attended
II. Non‐activated Continuous Recorders:
Dynamic electrocardiography (e.g., Holter monitor) Non‐
attended.
The CMS has determined that an ambulatory cardiac
monitoring device or service is not covered if it does not fit into
these categories. The CMS noted that it may create new
ambulatory electrocardiographic monitoring device categories
"if published, peer‐reviewed clinical studies demonstrate
evidence of improved clinical utility, or equal utility with
additional advantage to the patient, as indicated by improved
patient management and/or improved health outcomes in the
Medicare population (such as superior ability to detect serious
or life‐threatening arrhythmias) as compared to devices or
services in the currently described categories".
Hanke et al (2009) noted that 24‐hr Holter monitoring (24HM)
is commonly used to assess cardiac rhythm after surgical
therapy of atrial fibrillation (AF). However, this "snapshot"
documentation leaves a considerable diagnostic window and
only stores short‐time cardiac rhythm episodes. To improve
accuracy of rhythm surveillance after surgical ablation therapy
and to compare continuous heart rhythm surveillance versus
24HM follow‐up intra‐individually, these investigators evaluated
a novel implantable continuous cardiac rhythm monitoring
(IMD) device (Reveal XT 9525, Medtronic Inc., Minneapolis,
MN). A total of 45 cardiac surgical patients (male 37, mean age
of 69.7+/‐9.2 years) with a mean pre‐operative AF duration of
38 +/‐ 45 m were treated with either left atrial epicardial
high‐intensity focus ultrasound ablation (n = 33) or endocardial
cryothermy (n = 12) in case of concomitant mitral valve surgery.
Rhythm control readings were derived simultaneously from
24HM and IMD at 3‐month intervals with a total recording of
2,021 hours for 24HM and 220,766 hours for IMD. Mean
follow‐up was 8.30 +/‐ 3.97 m (range of 0 to 12 m). Mean post‐
operative AF burden (time period spent in AF) as indicated by
IMD was 37 +/‐ 43 %. Sinus rhythm was documented in 53
readings of 24HM, but in only 34 of these instances by the IMD
in the time period before 24HM readings (64 %, p < 0.0001),
reflecting a 24HM sensitivity of 0.60 and a negative‐predictive
value (NPV) of 0.64 for detecting AF recurrence. The authors
concluded that for "real‐life" cardiac rhythm documentation,
continuous heart rhythm surveillance instead of any
conventional 24HM follow‐up strategy is necessary. This is
particularly important for further judgment of ablation
techniques, devices as well as anti‐coagulation and anti‐
arrhythmic therapy.
Hindricks et al (2010) quantified the performance of the first
implantable leadless cardiac monitor (ICM) with dedicated AF
detection capabilities. Patients (n = 247) with an implanted ICM
who were likely to present with paroxysmal AF were selected.
A special Holter device stored 46 hours of subcutaneously
recorded ECG, ICM markers, and 2 surface ECG leads. The ICM
automatic arrhythmia classification was compared with the
core laboratory classification of the surface ECG. Of the 206
analyzable Holter recordings collected, 76 (37 %) contained at
least 1 episode of core laboratory classified AF. The sensitivity,
specificity, positive‐predictive value, and NPV for identifying
patients with any AF were 96.1 %, 85.4 %, 79.3 %, and 97.4 %,
respectively. The AF burden measured with the ICM was very
well‐correlated with the reference value derived from the
Holter (Pearson coefficient = 0.97). The overall accuracy of the
ICM for detecting AF was 98.5 %. The authors concluded that in
this ICM validation study, the dedicated AF detection algorithm
reliably detected the presence or absence of AF and the AF
burden was accurately quantified.
Ip et al (2012) examined the outcomes of surgical ablation and
post‐ablation AF surveillance with a leadless ICM. A total of 45
patients with drug‐refractory paroxysmal or persistent AF
underwent video‐assisted epicardial ablation using a bipolar
radiofrequency clamp. An ICM was implanted subcutaneously
post‐ablation to assess AF recurrence. AF recurrence was
defined as greater than or equal to 1 AF episode with a
duration of greater than or equal to 30 s. The device‐stored
data were down‐loaded weekly over the internet, and all
transmitted events were reviewed. A total of 1,220 AF
automatic and patient‐activated AF episodes were analyzed
over a follow‐up of 12 +/‐ 3 months. Of these episodes, 46 %
were asymptomatic. Furthermore, only 66 % of the patient‐
activated episodes were AF. Recurrence of AF was highest in
first 4 weeks and substantially decreased 6 months post‐
ablation. The overall freedom from AF recurrence at the end
of follow‐up was 60 %. When 48‐hr Holter recordings were
compared with the device‐stored episodes, the sensitivity of
the device to detect AF was 98 %, and the specificity was 71 %.
The authors concluded that ICM provides an objective measure
of AF ablation success and may be useful in making clinical
decisions.
The AliveCor Heart Monitor (AliveCor, Inc., San Francisco, CA) is
an iPhone‐enabled heart monitor that has been known as the
“iPhoneECG”. It is in a thin case with 2 electrodes that snaps
onto the back of an iPhone 4 or 5. To obtain an
electrocardiogram (ECG) recording, the patient just holds the
device while pressing fingers from each hand onto the
electrodes. The device can also obtain an ECG from the
patient's chest. The AliveCor ECG iPhone application can record
rhythm strips of any duration to be stored on the phone and
uploaded securely for later analysis, sharing, or printing
through AliveCor's website. The AliveCor Heart Monitor will
operate for about 100 hours on a 3.0 V coin cell battery.
However, there is currently a lack of evidence to support the
clinical value of the AliveCor Heart Monitor. Prospective,
randomized controlled studies are needed to ascertain how the
use of the AliveCor Heart Monitor would improve clinical
outcomes in patients with cardiovascular diseases/disorders.
According to the company, research studies are currently in
progress to explore effectiveness of the AliveCor Heart Monitor
in the following areas: http://www.medgadget.com/2012/12
/alivecor‐iphone‐ecg‐receives‐fda‐clearance.html
(http://www.medgadget.com/2012/12/alivecor‐iphone‐ ecg‐
receives‐fda‐clearance.html)
Expanding physician assistant/registered nurse data
collection abilities
Long‐term atrial fibrillation remote monitoring Medication‐
induced QT‐duration response monitoring Multi‐specialty
care integration
Post‐ablation follow‐up
Preventive pediatric care
Stress induced rhythm morphology changes
The implantable loop recorder (ILR) is a subcutaneous, single‐
lead, ECG monitoring device used for diagnosis in patients with
recurrent unexplained episodes of palpitations or syncope. The
2009 ESC syncope guidelines include the following
recommendations for use of ILRs:
ILR is indicated for early phase evaluation in patients with
recurrent syncope of uncertain origin, absence of high‐risk
criteria (see appendix), and a high likelihood of recurrence
within the battery life of the device.
An ILR is recommended in patients who have high‐risk
features (see appendix) in whom a comprehensive
evaluation did not demonstrate a cause of syncope or lead
to a specific treatment.
An ILR should be considered to assess the contribution of
bradycardia before embarking on cardiac pacing in patients
with suspected or certain reflex syncope with frequent or
traumatic syncopal episodes.
Ziegler et al (2012) stated that the detection of undiagnosed
atrial tachycardia/atrial fibrillation (AT/AF) among patients with
stroke risk factors could be useful for primary stroke
prevention. These researchers analyzed newly detected AT/AF
(NDAF) using continuous monitoring in patients with stroke risk
factors but without previous stroke or evidence of AT/AF. Newly
detected AT/AF (AT/AF greater than 5 mins on any day) was
determined in patients with implantable cardiac rhythm devices
and greater than or equal to 1 stroke risk factors (congestive
heart failure, hypertension, age greater than or equal to 75
years, or diabetes). All devices were capable of continuously
monitoring the daily cumulative time in AT/AF. Of 1,368 eligible
patients, NDAF was identified in 416 (30%) during a follow‐up of
1.1 ± 0.7 years and was unrelated to the CHADS2 score
(congestive heart failure, hypertension [blood pressure
consistently greater than 140/90 mm Hg or hypertension
treated with medication], age greater than or equal to 75 years,
diabetes mellitus, previous stroke or transient ischemic attack).
The presence of AT/AF greater than 6 hours on greater than or
equal to 1 day increased significantly with increased CHADS2
scores and was present in 158 (54 %) of 294 patients with NDAF
and a CHADS2 score of greater than or equal to 2. Newly
detected AT/AF was sporadic, and 78 % of patients with a
CHADS2 score of greater than or equal to 2 with NDAF
experienced AT/AF on less than 10 % of the follow‐up days. The
median interval to NDAF detection in these higher risk patients
was 72 days (interquartile range: 13 to 177). The authors
concluded that continuous monitoring identified NDAF in 30 %
of patients with stroke risk factors. In patients with NDAF,
AT/AF occurred sporadically, high‐lighting the difficulty in
detecting paroxysmal AT/AF using traditional monitoring
methods. However, AT/AF also persisted for greater than 6
hours on greater than or equal to 1 day in most patients with
NDAF and multiple stroke risk factors. Whether patients with
CHADS2 risk factors but without a history of AF might benefit
from implantable monitors for the selection and administration
of anti‐coagulation for primary stroke prevention merits
additional investigation.
Cotter et al (2013) examined the usefulness of ILR with
improved AF detection capability (Reveal XT) and the factors
associated with AF in the setting of unexplained stroke. A
cohort study was reported of 51 patients in whom ILRs were
implanted for the investigation of ischemic stroke for which no
cause had been found (cryptogenic) following appropriate
vascular and cardiac imaging and at least 24 hours of cardiac
rhythm monitoring. Age of patients ranged from 17 to 73
(median of 52) years. Of the 30 patients with a shunt
investigation, 22 had a patent foramen ovale (73.3 %; 95 % CI:
56.5 % to 90.1 %). Atrial fibrillation was identified in 13 (25.5
%; 95 % CI: 13.1 % to 37.9 %) cases. Atrial fibrillation was
associated with increasing age (p = 0.018), inter‐atrial
conduction block (p = 0.02), left atrial volume (p = 0.025), and
the occurrence of atrial premature contractions on preceding
external monitoring (p = 0.004). The median (range) of
monitoring prior to AF detection was 48 (0 to 154) days. The
authors concluded that in patients with unexplained stroke, AF
was detected by ILR in 25.5 %. Predictors of AF were identified,
which may help to target investigations. They stated that ILRs
may have a central role in the future in the investigation of
patients with unexplained stroke.
Mittal et al (2013) stated that in patients with atrial flutter who
undergo cavo‐tricuspid isthmus ablation, long‐term ECG
monitoring may identify new onset of AF. These investigators
ascertained, through the use of an ILR with a dedicated AF
detection algorithm, the incidence, duration, and burden of
new AF in these patients and developed an optimal post‐
ablation ECG monitoring strategy. These researchers enrolled
20 patients with flutter, a CHADS2 score of 2 to 3, and no prior
episode of AF. After cavo‐tricuspid isthmus ablation, these
investigators implanted an ILR, which was interrogated
routinely; all stored ECGs were adjudicated. During a mean
follow‐up of 382 ± 218 days, 3 patterns were observed: (i) in 11
(55 %) patients, stored ECGs confirmed AF at 62 ± 38 days after
ablation; (ii) in 4 (20 %) patients, although the ILR suggested AF,
episodes actually represented sinus rhythm with frequent
premature atrial contractions and/or over‐sensing; (iii) in 5 (25
%) patients, no AF was observed. Episodes less than 4 hours
were associated with low AF burden (less than 1 %) or false
detections. The 1‐year freedom from any episode of AF greater
than 4 and greater than 12 hours was 52 % and 83 %,
respectively. The authors concluded that these findings showed
that many (but not all) patients develop new AF within the first
4 months of flutter ablation. Since external ECG monitoring for
this duration is impractical, the ILR has an important role for
long‐term AF surveillance. They stated that future research
should be directed toward identifying the relationship between
duration/burden of AF and stroke and improving existing ILR
technology.
An UpToDate review on “Cryptogenic stroke” (Prabhakaran and
Elkind, 2013) states that “Paroxysmal atrial fibrillation (AF), if
transient, infrequent, and largely asymptomatic, may be
undetected on standard cardiac monitoring such as continuous
telemetry and 24 or 48‐hour Holter monitors. In a study that
assessed longer‐term monitoring using an outpatient telemetry
system for a median duration of 21 days among 56 patients
with cryptogenic stroke, paroxysmal AF was detected in 13
patients (23 %). The median time to detection of AF was 7
days. The majority of patients with paroxysmal AF were
asymptomatic during the fleeting episodes. Other reports have
noted that the detection rate of paroxysmal AF can be
increased with longer duration of cardiac monitoring, and that
precursors of AF such as frequent premature atrial contractions
may predict those harboring paroxysmal AF. The optimal
monitoring method ‐‐ continuous telemetry, ambulatory
electrocardiography, serial electrocardiography, transtelephonic
ECG monitoring, or implantable loop recorders ‐‐ is uncertain,
though longer durations of monitoring are likely to obtain the
highest diagnostic yield”.
Sanna, et al. (2014) conducted a randomized, controlled study
of 441 patients (CRYSTAL AF trial) to assess whether long‐term
monitoring with an insertable cardiac monitor (ICM) is more
effective than conventional follow‐up (control) for detecting
atrial fibrillation in patients with cryptogenic stroke. Patients 40
years of age or older with no evidence of atrial fibrillation
during at least 24 hours of ECG monitoring underwent
randomization within 90 days after the index event. The
primary end point was the time to first detection of atrial
fibrillation (lasting >30 seconds) within 6 months. Among the
secondary end points was the time to first detection of atrial
fibrillation within 12 months. Data were analyzed according to
the intention‐to‐treat principle. By 6 months, atrial fibrillation
had been detected in 8.9% of patients in the ICM group (19
patients) versus 1.4% of patients in the control group (3
patients) (hazard ratio, 6.4; 95% confidence interval [CI], 1.9 to
21.7; P<0.001). By 12 months, atrial fibrillation had been
detected in 12.4% of patients in the ICM group (29 patients)
versus 2.0% of patients in the control group (4 patients) (hazard
ratio, 7.3; 95% CI, 2.6 to 20.8; P<0.001). The authors concluded
that ECG monitoring with an ICM was superior to conventional
follow‐up for detecting atrial fibrillation after cryptogenic
stroke.
In the EMBRACE trial, Gladstone, et al. (2014) randomly
assigned 572 patients 55 years of age or older, without known
atrial fibrillation, who had had a cryptogenic ischemic stroke or
TIA within the previous 6 months (cause undetermined after
standard tests, including 24‐hour electrocardiography [ECG]), to
undergo additional noninvasive ambulatory ECG monitoring
with either a 30‐day event‐triggered recorder (intervention
group) or a conventional 24‐hour monitor (control group). The
primary outcome was newly detected atrial fibrillation lasting
30 seconds or longer within 90 days after randomization.
Secondary outcomes included episodes of atrial fibrillation
lasting 2.5 minutes or longer and anticoagulation status at 90
days. Atrial fibrillation lasting 30 seconds or longer was
detected in 45 of 280 patients (16.1%) in the intervention
group, as compared with 9 of 277 (3.2%) in the control group
(absolute difference, 12.9 percentage points; 95% confidence
interval [CI], 8.0 to 17.6; P<0.001; number needed to screen, 8).
Atrial fibrillation lasting 2.5 minutes or longer was present in 28
of 284 patients (9.9%) in the intervention group, as compared
with 7 of 277 (2.5%) in the control group (absolute difference,
7.4 percentage points; 95% CI, 3.4 to 11.3; P<0.001). By 90
days, oral anticoagulant therapy had been prescribed for more
patients in the intervention group than in the control group (52
of 280 patients [18.6%] vs. 31 of 279 [11.1%]; absolute
difference, 7.5 percentage points; 95% CI, 1.6 to 13.3; P=0.01).
The investigators concluded that, among patients with a recent
cryptogenic stroke or TIA who were 55 years of age or older,
paroxysmal atrial fibrillation was common. Noninvasive
ambulatory ECG monitoring for a target of 30 days significantly
improved the detection of atrial fibrillation by a factor of more
than five and nearly doubled the rate of anticoagulant
treatment, as compared with the standard practice of short‐
duration ECG monitoring.
An accompanying editorial stated that at least two relevant
questions remain unanswered (Kamel, 2014). "First, subclinical
atrial fibrillation is clearly not the whole answer to the riddle of
cryptogenic stroke. Even after long‐term follow‐up involving 3
years of continuous rhythm monitoring in the CRYSTAL AF trial,
less than one third of the patients had evidence of atrial
fibrillation. We need to identify additional sources of embolism
and better markers of known stroke mechanisms such as
nonobstructive atherosclerosis. Second, we need more
evidence to guide therapy for subclinical atrial fibrillation.
Randomized trials of antithrombotic therapy have involved
patients with a sufficient burden of atrial fibrillation to allow its
recognition without prolonged rhythm monitoring. Whether the
proven benefit of anticoagulation in this population extends
to patients with subclinical atrial fibrillation must be answered
in future trials."
The editorialist (Kamel, 2014) continued: "In the meantime,
how should the results of the CRYSTAL AF and EMBRACE trials
change practice? The weight of current evidence suggests that
subclinical atrial fibrillation is a modifiable risk factor for stroke
recurrence, and its presence should be thoroughly ruled out in
this high‐risk population. Therefore, most patients with
cryptogenic stroke or transient ischemic attack should undergo
at least several weeks of rhythm monitoring. Relatively
inexpensive external loop recorders, such as those used in the
EMBRACE trial, will probably be cost‐effective; the value of
more expensive implantable loop recorders is less clear.
Furthermore, the detection of subclinical atrial fibrillation in
these patients should generally prompt a switch from
antiplatelet to anticoagulant therapy. At the least, patients
should be followed closely in order to detect progression to
clinically apparent atrial fibrillation, in which case the evidence
unambiguously supports anticoagulant therapy for the
secondary prevention of stroke."
The BIOTRONIK BioMonitor (BIOTRONIK Home Monitoring) is
an implantable cardiac monitor. It differs from other
implantables as it does not have leads going to the heart. The
BioMonitor is suggested to continuously record ECG data when
an arrhythmia occurs. An external magnet can also be
positioned over the implanted device to record ECG data when
symptoms are experienced.
The mobile patient management system is a monitoring device
designed for detection of cardiac arrhythmias. These devices
differ from other ECG devices as they may also monitor activity,
body fluid status, body temperature posture and respiratory
rate. An example of such a device is the BodyGuardian Remote
Monitoring System.
The ViSi Mobile Monitoring System is intended for single or
multi‐parameter vital sign monitoring of adults. It measures
ECG (three or five leads), heart rate, respiration rate,
noninvasive blood pressure, noninvasive monitoring of oxygen
saturation (SpO2), pulse rate and skin temperature.
Self‐monitoring ECG technologies, which may be obtained
without physician prescription include, but are not limited to,
software applications for smartphones and other electronic
devices suggested to monitor ECG, heart rate, oxygen
saturation, respiratory rate, etc. In addition, there are devices
(wireless or non‐wireless) such as the Alive Heart and Activity
Monitor (Alive Technologies), a wireless health monitoring
system, purported to monitor ECG, heart rate and other
non‐cardiac related indications. These devices may be attached
to a finger, ear lobe or other body part.
The AliveCor Heart Monitor (iPhoneECG):
Chung and Guise (2015) evaluated the feasibility of AliveCor
tracings for QTC assessment in patients receiving dofetilide. A
total of 5 patients with persistent AF underwent the 2‐handed
measurement (mimicks Lead I). On the ECG, Lead I or II was
used. There was no significant difference between the
AliveCor‐QTC and ECG‐QTC (all ± 20 msec). The authors
concluded that the AliveCor device can be used to monitor the
QTC in these patients. This was a small (n = 5) feasibility study;
the clinical role of the AliveCor heart monitor has yet to be
established.
Baquero et al (2015) stated that the AliveCor ECG is an FDA‐
approved ambulatory cardiac rhythm monitor that records a
single channel (lead I) ECG rhythm strip using an iPhone. In the
past few years, the use of smartphones and tablets with health
related applications has significantly proliferated. In this initial
feasibility trial, these researchers attempted to reproduce the
12‐lead ECG using the bipolar arrangement of the AliveCor
monitor coupled to smart phone technology. They used the
AliveCor heart monitor coupled with an iPhone cellular phone
and the AliveECG application (APP) in 5 individuals. In these 5
individuals, recordings from both a standard 12‐lead ECG and
the AliveCor generated 12 lead ECG had the same
interpretation. The authors concluded that the findings of this
study demonstrated the feasibility of creating a 12‐lead ECG
with a smart phone. They stated that the validity of the
recordings would seem to suggest that this technology could
become an important useful tool for clinical use; this new
hand‐held smartphone 12‐lead ECG recorder needs further
development and validation.
In a pilot study, Muhlestein et al (2015) attempted to gain
experience with smartphone ECG prior to designing a larger
multi‐center study evaluating standard 12‐lead ECG compared
to smartphone ECG. A total of 6 patients for whom the hospital
STEMI protocol was activated were evaluated with traditional
12‐lead ECG followed immediately by a smartphone ECG using
right (VnR) and left (VnL) limb leads for precordial grounding.
The AliveCor Heart Monitor was utilized for this study. All
tracings were taken prior to catheterization or immediately
after re‐vascularization while still in the catheterization
laboratory. The smartphone ECG had excellent correlation with
the gold standard 12‐lead ECG in all patients; 4 out of 6 tracings
were judged to meet STEMI criteria on both modalities as
determined by 3 experienced cardiologists, and in the
remaining 2, consensus indicated a non‐STEMI ECG diagnosis.
No significant difference was noted between VnR and VnL. The
authors concluded that smartphone‐based ECG is a promising,
developing technology intended to increase availability and
speed of electrocardiographic evaluation. This study confirmed
the potential of a smartphone ECG for evaluation of acute
ischemia and the feasibility of studying this technology further
to define the diagnostic accuracy, limitations and appropriate
use of this new technology.
Peritz et al (2015) noted that rapidly detecting dangerous
arrhythmias in a symptomatic athlete continues to be an elusive
goal. The use of hand‐held smartphone ECG monitors could
represent a helpful tool connecting the athletic trainer to the
cardiologist. A total of 6 college athletes presented to their
athletic trainers complaining of palpitations during exercise
were included in this analysis. A single‐lead ECG was
performed using the AliveCor Heart Monitor and sent wirelessly
to the Team Cardiologist who confirmed an absence of
dangerous arrhythmia. The authors concluded that the
AliveCor monitoring has the potential to enhance evaluation of
symptomatic athletes by allowing trainers and team physicians
to make diagnosis in real‐time and facilitate faster return to
play.
Appendix
Table: Short‐Te rm High Risk Criteria Which Require Prompt
Hospitalization or Intensive Evaluation
Severe structural or coronary artery disease (heart failure,
low LVEF, or previous myocardial infarction)
Clinical or ECG features suggesting arrhythmic syncope
Syncope during exertion or supine
Palpitations at the time of syncope
Family history of SCD Non‐
sustained VT
Bifascicular‐block (LBBB or RBBB combined with left
anterior or left posterior fascicular block) or other
intraventricular conduction abnormalities with QRS
duration ≥120 ms
Inadequate sinus bradycardia (<50 bpm) or sinoartrial
block in absence of negative chronotropic medications or
physical training
Pre‐excited QRS complex
Prolonged or short QT interval
RBBB pattern with ST‐elevation in leads V1‐V3 (Brugada
pattern)
Negative T waves in right precordial leads, epsilon waves,
and ventricular late potentials suggestive of ARVC
Important co‐morbidities
Severe anemia
Electrolyte disturbance
Key: ARVC: arrhythmogenic right ventricular cardiomyopathy;
bpm: beats per minute; LBBB: left bundle branch block; LVEF:
left ventricular ejection fraction; RBBB: right bundle branch
block; SCD: sudden cardiac death; VT: ventricular tachycardia.
Source: Task Force for the Diagnosis and Management of
Syncope; European Society of Cardiology (ESC); European Heart
Rhythm Association (EHRA); Heart Failure Association (HFA);
Heart Rhythm Society (HRS), Moya A, Sutton R, Ammirati F, et
al. Guidelines for the diagnosis and management of syncope
(version 2009). Eur Heart J. 2009;30(21):2631‐2671.
CPT Codes / HCPCS Codes / ICD‐10 Codes
Information in the [brackets] below has been added for
clarification purposes. Codes requiring a 7th character are
represented by "+":
External intermittent cardiac event monitors (i.e., external loop
recorders) and external intermittent cardiac event monitors with
real‐time data transmission and analysis :
CPT codes covered if selection criteria are met:
93268
External patient and, when performed, auto
activated electrocardiographic rhythm derived event
recording with symptom‐related memory loop with
remote download capability up to 30 days, 24‐hour
attended monitoring; includes transmission, review
and interpretation by a physician or other qualified
health care professional
93270
recording (includes connection, recording, and
disconnection)
93271
transmission and analysis
93272
preview and interpretation by a physician or other
qualified health care professional
Other CPT codes related to the CPB:
93224 ‐
Electrocardiographic monitoring [Holter monitors
93227
and other event recording]
ICD‐10 codes covered if selection criteria are met:
I44.0 ‐ I45.9 Atrioventricular and left bundle‐branch block and
other conduction disorders [in persons with a non‐
diagnostic Holter monitor, or in persons whose
symptoms occur infrequently (less frequently than
daily) such that the arrhythmia or syncope is unlikely
to be diagnosed by Holter monitoring]
I47.0 ‐ I49.9 Paroxysmal tachycardia, atrial fibrillation and flutter,
and other cardiac arrhythmias
I63.00 ‐
Cerebral infarction [Covered for evaluation of
I63.9
members with suspected atrial fibrillation as a cause
of cryptogenic stroke who have a nondiagnostic
Holter monitor]
R00.2
Palpitations
R42
Dizziness and giddiness [light‐headedness] [in
persons with a non‐diagnostic Holter monitor, or in
persons whose symptoms occur infrequently (less
frequently than daily) such that the arrhythmia or
syncope is unlikely to be diagnosed by Holter
monitoring]
R55
Syncope and collapse [in persons with a non‐
diagnostic Holter monitor, or in persons whose
symptoms occur infrequently (less frequently than
daily) such that the arrhythmia or syncope is unlikely
to be diagnosed by Holter monitoring]
Z86.73
Personal history of transient ischemic attack (TIA),
and cerebral infarction without residual deficits
[Covered for evaluation of members with suspected
atrial fibrillation as a cause of cryptogenic stroke who
have a nondiagnostic Holter monitor]
Mobile cardiovascular telemetry (MCT):
CPT codes covered if selection criteria are met:
93228
External mobile cardiovascular telemetry with
electrocardiographic recording, concurrent
computerized real time data analysis and greater
than 24 hours of accessible ECG data storage
(retrievable with query) with ECG triggered and
patient selected events transmitted to a remote
attended surveillance center for up to 30 days;
review and interpretation with report by a physician
or other qualified health care professional
93229
technical support for connection and patient
instructions for use, attended surveillance, analysis
and physician prescribed transmission of daily and
emergent data reports as prescribed by a physician
or other qualified health care professional
ICD‐10 codes covered if selection criteria are met :
Criteria ‐ a cardiac arrhythmia is suspected as the cause in
members that have a non‐diagnostic Holter monitor, or
symptoms occur infrequently (less frequently than daily) such
that the arrhythmia is unlikely to be diagnosed by Holter
monitoring]
I44.0 ‐ I45.9 Atrioventricular and left bundle‐branch block and
other conduction disorders
I47.0 ‐ I49.9 Paroxysmal tachycardia, atrial fibrillation and flutter,
and other cardiac arrhythmias
I63.00 ‐
Cerebral infarction [Covered for evaluation of
I63.9
members with suspected atrial fibrillation as a cause
of cryptogenic stroke who have a nondiagnostic
Holter monitor]
R00.0
Tachycardia, unspecified
R00.1
Bradycardia, unspecified
R00.2
Palpitations
R42
Dizziness and giddiness [light‐headedness]
R55
Syncope and collapse [pre‐syncope]
Z86.73
Personal history of transient ischemic attack (TIA),
and cerebral infarction without residual deficits
[Covered for evaluation of members with suspected
atrial fibrillation as a cause of cryptogenic stroke who
have a nondiagnostic Holter monitor]
Implantable loop recorder:
CPT codes covered if selection criteria are met:
33282
Implantation of patient‐activated cardiac event
recorder
33284
Removal of an implantable, patient‐activated cardiac
event recorder
93285
Programming device evaluation (in person) with
iterative adjustment of the implantable device to test
the function of the device and select optimal
permanent programmed values with analysis, review
and report by a physician or other qualified health
care professional; implantable loop recorder system
93291
Interrogation device evaluation (in person) with
analysis, review and report by a physician or other
qualified health care professional , includes
connection, recording and disconnection per patient
encounter; implantable loop recorder system,
including heart rhythm derived data analysis
93298
Interrogation device evaluation(s), (remote) up to 30
days; implantable loop recorder system, including
analysis of recorded heart rhythm data, analysis,
review(s) and report(s) by a physician or other
qualified health care professional
93299
implantable cardiovascular monitor system or
implantable loop recorder system, remote data
acquisition(s), receipt of transmissions and
technician review, technical support and distribution
of results
Other CPT codes related to the CPB:
0295T ‐
External electrocardiographic recording for more
0298T
than 48 hours up to 21 days by continuous rhythm
recording and storage
93224 ‐
External electrocardiographic recording up to 48
93227
hours by continuous rhythm recording and storage
HCPCS codes covered if selection criteria are met:
C1764
Event recorder, cardiac (implantable)
E0616
Implantable cardiac event recorder with memory,
activator, and programmer
ICD‐10 codes covered if selection criteria are met:
G45.0 ‐
Transient cerebral ischemic attacks and related
G45.3,
syndromes [for evaluation of members with
G45.8 ‐
suspected atrial fibrillation as a cause of cryptogenic
G45.9
stroke who have a nondiagnostic Holter monitor]
I25.2
Old myocardial infarction [noninvasive ambulatory
monitoring consisting of 30‐day presymptom
external loop recordings or MCT fails to establish a
definitive diagnosis]
I47.0 ‐ I49.9 Paroxysmal tachycardia, atrial fibrillation and flutter,
and other cardiac arrhythmias
I50.1 ‐ I50.9 Heart failure [noninvasive ambulatory monitoring
consisting of 30‐day presymptom external loop
recordings or MCT fails to establish a definitive
diagnosis]
I63.00 ‐
Cerebral infarction, occlusion and stenosis of
I66.9
precerebral and cerebral arteries, not resulting in
cerebral infarction [for evaluation of members with
suspected atrial fibrillation as a cause of cryptogenic
stroke who have a nondiagnostic Holter monitor]
R00.2
Palpitations [symptoms occur so infrequently and
unpredictably (less frequently than once per month)
that noninvasive ambulatory monitoring (MCT or
external loop recorders) are unlikely to capture a
diagnostic ECG]
R42
Dizziness and giddiness [light‐headedness]
[symptoms occur so infrequently and unpredictably
(less frequently than once per month) that
noninvasive ambulatory monitoring (MCT or external
loop recorders) are unlikely to capture a diagnostic
ECG]
R55
Syncope and collapse [pre‐syncope] [symptoms
occur so infrequently and unpredictably (less
frequently than once per month) that noninvasive
ambulatory monitoring (MCT or external loop
recorders) are unlikely to capture a diagnostic ECG]
R56.9
Unspecified convulsions [seizures NOS] [symptoms
occur so infrequently and unpredictably (less
frequently than once per month) that noninvasive
ambulatory monitoring (MCT or external loop
recorders) are unlikely to capture a diagnostic ECG]
R94.31
Abnormal electrocardiogram [ECG] [EKG] [significant
ECG abnormalities & noninvasive ambulatory
monitoring consisting of 30‐day presymptom
external loop recordings or MCT fails to establish a
definitive diagnosis]
Z86.73
Personal history of transient ischemic attack (TIA),
and cerebral infarction without residual deficits [for
evaluation of members with suspected atrial
fibrillation as a cause of cryptogenic stroke who have
a nondiagnostic Holter monitor]
Long‐term (greater than 48 hours) external ECG monitoring by
continuous rhythm recording and storage:
CPT codes covered if selection criteria are met:
0295T ‐
External electrocardiographic recording for more
0298T
than 48 hours up to 21 days by continuous rhythm
recording and storage; includes recording, scanning
analysis with report, review and interpretation [Zio
Patch]
ICD‐10 codes covered if selection criteria are met [in persons
with a non‐diagnostic Holter monitor, or in persons whose
symptoms occur infrequently (less frequently than daily) such
that the arrhythmia is unlikely to be diagnosed by Holter
monitoring]:
I44.0 ‐ I45.9 Atrioventricular and left bundle‐branch block and
other conduction disorders
I47.0 ‐ I49.9 Cardiac dysrhythmias
R00.2
Palpitations
R42
Dizziness and giddiness [light‐headedness]
R55
Syncope and collapse [pre‐syncope]
AliveCor Heart Monitor (iPhoneECG):
CPT codes not covered for indications listed in the CPB:
93040
Rhythm ecg, one to three leads; with interpretation
and report
BIOTRONIK BioMonitor, Mobile patient management systems
(eg, BodyGuardian Remote Monitoring System), Self‐monitoring
ECG technologies & ViSi Mobile Monitoring System:
No specific code
HCPCS codes not covered for indications listed in the CPB:
No specific code
The above policy is based on the following references:
1. Crawford MH, Bernstein SJ, Deedwania PC, et al.
ACC/AHA Guidelines for Ambulatory Electrocardiography:
Executive summary and recommendations. A report of
the American College of Cardiology/American Heart
Association task force on practice guidelines. Circulation.
1999; 100(8):886‐893.
2. Pritchett ELC, Zimmerman JM, Hammill KF, et al.
Electrocardiogram recording by telephone in
antiarrhythmic drug trial. Chest. 1982; 81(4):473‐476.
3. Pratt CM, Slymen DJ, Wierman AM, et al. Asymptomatic
telephone EKG transmissions as an outpatient
surveillance system of ventricular arrhythmias:
Relationship to quantitative ambulatory EKG recording.
Am Heart J. 1987; 113(1):1‐7.
4. Pratt CM, Francis MJ, Stone CL, et al. Transtelephonic
electrocardiographic monitoring: Reliability in detecting
the ischemic ST segment response during exercise. Am
Heart J. 1984; 108(4 Pt 1):967‐974.
5. Kinlay S, et al. Cardiac event recorders yield more
diagnoses and are more cost‐effective than 48‐hour
Holter monitoring in patients with palpitations. A
controlled clinical trial. Ann Intern Med. 1996; 124(1
pt 10):16‐20.
6. Zimetbaum P, Kim KY, Ho KK, et al. Utility of patient‐
activated cardiac event recorders in general clinical
practice. Am J Cardiol. 1997; 79(3):371‐372.
7. Fogel RI, Evans JJ, Prystowsky EN. Utility and cost of event
recorders in the diagnosis of palpitations, presyncope,
and syncope. Am J Cardiol. 1997; 79(2):207‐208.
8. Waktare JE, Malik M. Holter, loop recorder, and event
counter capabilities of implanted devices. Pacing Clin
Electrophysiol. 1997; 20(10 Pt 2):2658‐2669.
9. Krahn AD, Klein GJ, Yee R. Recurrent syncope. Experience
with an implantable loop recorder. Cardiol Clin.
1997;15(2):313‐326.
10. Roche F, Gaspoz JM, Pichot V, et al. Accuracy of an
automatic and patient‐triggered long‐term solid memory
ambulatory cardiac event recorder. Am J Cardiol. 1997;
80(8):1095‐1098.
11. Hammill SC. Value and limitations of noninvasive
assessment of syncope. Cardiol Clin. 1997; 15(2):195‐218.
12. Grubb BP, Kosinski D. Current trends in etiology,
diagnosis, and management of neurocardiogenic
syncope. Curr Opin Cardiol. 1996; 11(1):32‐41.
13. Krahn AD, Klein GJ, Yee R. Recurrent unexplained
syncope: Diagnostic and therapeutic approach. Can J
Cardiol. 1996; 12(10):989‐994.
14. Krahn AD, Klein GJ, Norris C, Yee R. The etiology of
syncope in patients with negative tilt table and
electrophysiological testing. Circulation. 1995;
92(7):1819‐1824.
15. Hart GT. Evaluation of syncope. Am Fam Physician.
1995; 51(8):1941‐1948.
16. Krahn AD, Klein GJ, Yee R, et al. The high cost of syncope:
Cost implications of a new insertable loop recorder in the
investigation of recurrent syncope. Am Heart J. 1999;
137(5):870‐877.
17. Kenny RA, Krahn AD. Implantable loop recorder:
Evaluation of unexplained syncope. Heart.
1999; 81(4):431‐433.
18. Krahn AD, Klein GJ, Yee R, et al. Use of an extended
monitoring strategy in patients with problematic syncope.
Reveal Investigators. Circulation. 1999;99(3):406‐410.
19. Krahn AD, Klein GJ, Yee R, et al. Final results from a pilot
study with an implantable loop recorder to determine the
etiology of syncope in patients with negative noninvasive
and invasive testing. Am J Cardiol. 1998;82(1):117‐119.
20. Zimetbaum, PJ, Josephson ME. The evolving role of
ambulatory arrhythmia monitoring in general clinical
practice. Ann Intern Med. 1999;130(10):848‐856.
21. CardioNet, Inc. CardioNet: Monitoring at the Speed of
Life [website]. Philadelphia, PA: CardioNet;
2003. Available
at: http://www.cardionet.com (http://www.cardionet.c
om/). Accessed February 4, 2003.
22. Crawford MH, Bernstein SJ, Deedwania PC, et al.
ACC/AHA Guidelines for Ambulatory Electrocardiography.
A report of the American College of Cardiology/American
Heart Association Task Force on Practice Guidelines
(Committee to Revise the Guidelines for Ambulatory
Electrocardiography). Developed in collaboration with the
North American Society for Pacing and Electrophysiology.
J Am Coll Cardiol. 1999;34(3):912‐948.
23. Kapoor WN. Diagnostic evaluation of syncope. Am J Med.
1991;90(1):91‐106.
24. Linzer M, Pritchett E, Pontinen M, et al. Incremental
diagnostic yield of loop electocardiographic recorders in
unexplained syncope. Am J Cardiol. 1990;66(2):214‐219.
25. CardioNet, Inc. A new service: Mobile outpatient cardiac
telemetry. Control No. 220‐0011‐01. San Diego, CA:
CardioNet; 2002. Available at: http://www.cardionet.com
/images/brochure.pdf. Accessed February 7, 2003.
26. U.S. Food and Drug Administration (FDA), Center for
Devices and Radiologic Health. CardioNet ambulatory
ECG monitor with arrhythmia detection. 510(k) No.
K012241 (traditional). Rockville, MD: FDA; February 1,
2002. Available at: http://www.fda.gov/cdrh/pdf
/k012241.pdf. Accessed May 15, 2003.
27. U.S. Food and Drug Administration (FDA), Center for
Devices and Radiologic Health. CardioNet Ambulatory
ECG Monitor, Model CN10000A. 510(k) No. K003707
(traditional). Rockville, MD: FDA; May 16, 2001. Available
at: http://www.fda.gov/cdrh/pdf/k003707.pdf. Accessed
May 15, 2003.
28. U.S. Food and Drug Administration (FDA), Center for
Devices and Radiologic Health. Cardiac Telecom
Corporation’s “HeartLink II” [ECG Arrhythmia Detector
and Alarm System]. 510(k) No. K982803. Rockville, MD:
FDA; November 13, 1998.
29. Krahn AD, Klein GJ, Yee R, Skanes AC. Use of the
implantable loop recorder in patients with unexplained
syncope. Minerva Cardioangiol. 2003;51(1):21‐27.
30. Healthwise, Inc. Ambulatory electrocardiography. Health
Guide A‐Z. Boise, ID: Healthwise; 2003.
31. Versweyveld L. TransMedEx to deliver state‐of‐the‐art in
digital ambulatory electro‐cardiography. Almere, The
Netherlands: Virtual Medical Worlds Monthly; August
2001. Available at: http://www.hoise.com/vmw/01
/articles/vmw/LV‐VM‐08‐01‐
26.html (http://www.hoise.com/vmw/01/articles/vmw
/LV‐ VM‐08‐01‐26.html). Accessed March 20, 2004.
32. CardioPhonics. CardioPhonics 1000 Transtelephonic
Cardiac Recorder [website]. Timonium, MD: RLT Medical
Associates, Inc.; 2001. Available at:
http://www.cardiophonics.com
/cardiophonicsmonitor.htm. Accessed March 20, 2004.
33. CardioPhonics. CardioPhonics 1000 Digital Event
Recorder [website]. Timonium, MD; CardioPhonics, 2006.
Available at: http://www.cardiophonics.com
/Monitor.html (http://www.cardiophonics.com
/Monitor.html). Accessed March 15, 2007.
34. LifeWatch, Inc. and Instromedix. LifeWatch and
Instromedix announce launch of cardiac event monitors
with automatic afib detection [press release]. San Diego,
CA: Instromedix; May 9, 2002. Available at:
http://www.lifewatchinc.com/pages
/News/AFibLaunch.asp. Accessed March 20, 2004.
35. PDSHeart, Cardiac Telecom form strategic alliance;
PDSHEART gains national distribution rights to 'Telemetry
@ Home' service [press release]. Stockbridge, GA:
PDSHEART; May 16, 2001. Available at:
http://www.pdsheart.com
/old/news_flash_cardiac_telecom.htm. Accessed March
20, 2004.
36. PDSHeart. Dual alert afib. Products [website].
Stockbridge, GA: Physicians Diagnostic Services, Inc.;
2006. Available at: http://www.pdsheart.com
/products.html. Accessed April 21, 2007.
37. Philips Medical Systems. EASITrak 12 Monitor. Diagnostic
ECG [website]. Best, The Netherlands: Koninklijke Philips
Electronics NV; 2003. Available at:
http://www.medical.philips.com/main/products
/cardiography/products/cardiac/easi/. Accessed March
25, 2004.
38. Philips HeartCare Telemedicine Services
[website]. Düsseldorf, Germany: Royal Philips Electronics;
2001. Available at:
http://www.telemedicine.philips.com/. Accessed April 28,
2004.
39. Schiller AG. ECG Holter Recorder MT120
[website]. Altgasse, Switzerland; Schiller; 2004. Available
at: http://www.schiller.ch/products/. Accessed April 28,
2004.
40. Cardiac Risk in the Young (CRY). LifeWatch Cardiac
Monitoring. Surrey, UK: CRY; 2004.
41. LifeWatch, Inc. King of Hearts Express II Monitor. The
Arrhythmia Monitoring System. A Multi‐Channel Cardiac
Event Recorder with Auto‐Trigger
Capability. Datasheet. MAR 008. Buffalo Grove, IL:
LifeWatch; 2002. Available at:
http://www.lifewatchinc.com/pages/Products
/KOHExpressII.asp. Accessed April 28, 2004.
42. LifeWatch, Inc. LifeWatch AF auto‐trigger looping
monitors. Products and Services [website]. Buffalo Grove,
IL: LifeWatch; 2004. Available at:
http://www.lifewatchinc.com/LifeWatch‐Auto‐Trigger‐
Devices.asp. Accessed April 4, 2007.
43. Medicomp, Inc. CardioPAL SAVI. Event Monitors.
Products [website]. Melbourne, FL: MediComp; 2005.
Available at: http://www.medicompinc.com
/event_monitors.html. Accessed April 4, 2007.
44. eCardio Diagnostics. eTrigger AF 920. Cardiac Event
Monitoring [website]. The Woodlands, TX: eCardio
Diagnostics; 2004. Available
at: http://www.ecardio.com (http://www.ecardio.com
/). Accessed April 4, 2007.
45. TransMedEx. EZD. Products. Lake Ronkoncoma, NY:
TransMedEx; 2001. Available at:
http://www.transmedex.com/products
/product001d41d.html. Accessed April 28, 2004.
46. Daja N, Reljin I, Reljin B. Telemonitoring in cardiology –
ECG transmission by mobile phone. Ann Acad
Studenica. 2001;4:63‐66. Available at:
www.onk.ns.ac.yu/Letopis/LSA2001/PDFs/s3‐3‐
djaja.pdf. Accessed April 28, 2004.
47. Cox JB. It calls for help when you can’t [news]. Raleigh
News Observer, January 8, 2003. Available at:
http://www.skyaid.org/LifeWatch/ibm‐watch/htm.
Accessed April 28, 2004.
48. [No authors listed]. Lloyds mobile heart monitoring
service [news]. Pharmaceutical J. 1999;263(7069):699.
49. Jacobus C, Lichtenstein E. The benefits of remote patient
monitoring. In: Business Briefing: Global Healthcare 2003.
London, UK: Business Briefings Ltd.; 2004. Available at:
www.bbriefings.com/pdf/28/gh031_t_Cybernet.pdf.
Accessed April 28, 2004.
50. Bang N. Cardiac patients can be monitored in their home.
Project of the Month, January 2004. Aalborg, DK: The
Digital NorthDenmark; 2004. Available at:
http://www.det‐digitale‐nordjylland.dk/en/themes
/project_of_the_month
/project_of_the_month_january_2005.htm. Accessed
April 28, 2004.
51. IBM Corporation (IBM). Remote monitoring of health
conditions. IBM Research News. White Plains, NY: IBM;
2004. Available at: http://domino.research.ibm.com
/comm/pr.nsf/pages
/news.20031112_mobilehealth.html (http://domino.res
earch.ibm.com/comm/pr.nsf/pages
/news.20031112_mobilehealth.html). Accessed April 28,
2004.
52. HealthFrontier, Inc. ecg@Home Web, Wireless & Trans‐
telephonic ECG Device. HealthFrontier
Products. Lewiston, NY: HealthFrontier; 2004. Available
at: http://www.healthfrontier.com/Products
/product_detail.cfm?productid=1. Accessed April 28,
2004.
53. Center for Medicare and Medicaid Services (CMS).
Decision Memo for Electrocardiographic Services (CAG‐
00158N). Medicare Coverage Database. Baltimore, MD:
CMS; August 26, 2004. Available
at: http://www.cms.hhs.gov
/mcd/viewdecisionmemo.asp?id=89
(http://www.cms.hhs.gov
/mcd/viewdecisionmemo.asp?id=89). Accessed August
29, 2004.
54. Medical Services Options (MSO), Inc. Telemetry @ Home
Physician Information. Fair Lawn, NJ: MSO; 2003.
Available at: http://ww.msobiz.com/site/telemetryhome
/physician/. Accessed November 15, 2004.
55. Health Monitoring Services of America, Inc.
Telemetry@Home. HEARTLink II. Boca Raton, FL: Health
Monitoring Services of America; 2000. Available at:
http://www.healthmonitoringservices.com
/telemetryHome.html. Accessed November 15, 2004.
56. Saarel EV, Stefanelli CB, Fischbach PS, et al.
Transtelephonic electrocardiographic monitors for
evaluation of children and adolescents with suspected
arrhythmias. Pediatrics. 2004;113(2):248‐251.
57. National Horizon Scanning Centre. Insertable loop
recorders for the diagnosis of syncope ‐ horizon scanning
review. Birmingham, UK: National Horizon Scanning
Centre (NHSC); 2002.
58. Medical Services Advisory Committee (MSAC).
Implantable loop recorder for unexplained recurrent
syncope. Assessment Rerport. MSAC Application
1061. Canberra, ACT: Medical Services Advisory
Committee (MSAC); 2003.
59. National Horizon Scanning Centre. Reveal
Plus implantable loop recorders for the investigation of
syncope and other events ‐ horizon scanning review
Birmingham, UK: National Horizon Scanning Centre
(NHSC); 2004.
60. Slater SG. Telehealth solution: Telemetry at home ‐‐ it's
time has come. Home Healthcare Manag Pract.
2003;15(3):264‐265.
61. Joshi AK, Kowey PR, Prystowsky EN, et al. First experience
with a Mobile Cardiac Outpatient Telemetry (MCOT)
system for the diagnosis and management of cardiac
arrhythmia. Am J Cardiol. 2005;95(7):878‐881.
62. Schwartzman D, Blagev DP, Brown ML, Mehra R.
Electrocardiographic events preceding onset of atrial
fibrillation: Insights gained using an implantable loop
recorder. J Cardiovasc Electrophysiol.
2006;17(3):243‐246.
63. Rothman SA, Laughlin JC, Seltzer J, et al. The diagnosis of
cardiac arrhythmias: A prospective multi‐center
randomized study comparing mobile cardiac outpatient
telemetry versus standard loop event monitoring. J
Cardiovasc Electrophysiol. 2007;18(3):241‐247.
64. Naccarelli GV. Ambulatory electrocardiographic
monitoring: Has mobile cardiac outpatient telemetry
changed the playing field? J Cardiovasc Electrophysiol.
2007;18(3):248‐249.
65. Olson JA, Fouts AM, Padanilam BJ, Prystowsky EN. Utility
of mobile cardiac outpatient telemetry for the diagnosis
of palpitations, presyncope, syncope, and the assessment
of therapy efficacy. J Cardiovasc Electrophysiol.
2007;18(5):473‐477.
66. Prystowsky EN. Assessment of rhythm and rate control in
patients with atrial fibrillation. J Cardiovasc
Electrophysiol. 2006;17(Suppl 2):S7‐S10.
67. Vasamreddy CR, Dalal D, Dong J, et al. Symptomatic and
asymptomatic atrial fibrillation in patients undergoing
radiofrequency catheter ablation. J Cardiovasc
Electrophysiol. 2006;17:134‐139.
68. Strickberger SA, Benson DW, Biaggioni I, et al. AHA/ACCF
scientific statement on the evaluation of syncope.
Circulation. 2006;113:316‐327.
69. LifeWatch, Inc. LifeStar ACT Ambulatory Cardiac
Telemetry [website]. Rosemount, IL: LifeWatch; 2007.
Available at: http://www.lifewatchinc.com
/ACT‐Monitoring.asp. Accessed August 25, 2007.
70. Giada F, Gulizia M, Francese M, et al. Recurrent
unexplained palpitations (RUP) study comparison of
implantable loop recorder versus conventional diagnostic
strategy. J Am Coll Cardiol. 2007;49(19):1951‐1956.
71. Biowatch Medical Inc. Vital Signs Transmitter [website].
Columbia, SC: Biowatch Medical; 2008. Available
at: http://www.biowatchmed.com/ (http://www.biow
atchmed.com/). Accessed January 15, 2008.
72. Gottipaty VK, Khoury L, Beard JT, Hamson V. A novel
real‐time ambulatory cardiac monitoring system is
user‐friendly and effective for identifying cardiac
arrhythmias [abstract]. Clinical Studies. Columbia, SC:
Biowatch Medical, Inc.; 2008.
73. Agency for Healthcare Research and Quality (AHRQ).
Remote cardiac monitoring. Technology Assessment.
Prepared for the AHRQ by the ECRI Evidence‐based
Practice Center (EPC). Contract No. 290‐02‐0019.
Rockville, MD: AHRQ; December 12, 2007.
74. Saarel EV, Doratotaj S, Sterba R. Initial experience with
novel mobile cardiac outpatient telemetry for children
and adolescents with suspected arrhythmia. Congenit
Heart Dis. 2008;3(1):33‐38.
75. Tayal AH, Tian M, Kelly KM, et al. Atrial fibrillation
detected by mobile cardiac outpatient telemetry in
cryptogenic TIA or stroke. Neurology.
2008;71(21):1696‐1701.
76. Pierre B, Fauchier L, Breard G, et al. Implantable loop
recorder for recurrent syncope: Influence of cardiac
conduction abnormalities showing up on resting
electrocardiogram and of underlying cardiac disease on
follow‐up developments. Europace. 2008;10(4):477‐481.
77. Al Dhahri KN, Potts JE, Chiu CC, et al. Are implantable
loop recorders useful in detecting arrhythmias in children
with unexplained syncope? Pacing Clin Electrophysiol.
2009;32(11):1422‐1427.
78. eCardio. eVolution. Emerging Technology in Extended
Daily Monitoring. Houston, TX: eCardio; 2010. Available
at: http://www1.ecardio.com/Shared
/pdf/eVolution2.pdf (http://www1.ecardio.com/Shared
/pdf/eVolution2.pdf). Accessed September 1, 2010.
79. Bloch Thomsen PE, Jons C, Raatikainen MJ, et al; Cardiac
Arrhythmias and Risk Stratification After Acute
Myocardial Infarction (CARISMA) Study Group. Long‐term
recording of cardiac arrhythmias with an implantable
cardiac monitor in patients with reduced ejection fraction
after acute myocardial infarction: The Cardiac
Arrhythmias and Risk Stratification After Acute
Myocardial Infarction (CARISMA) study. Circulation.
2010;122(13):1258‐1264.
80. ClinicalTrials.gov. True Continuous ECG Monitoring (TCEM
Study). Sponsor: iRhythm Technologies, Inc.
ClinicalTrials.gov Identifier: NCT01559246. Bethesda, MD:
National Institutes for Health (NIH); updated March 19,
2012.
81. Mittal S, Movsowitz C, Steinberg JS. Ambulatory external
electrocardiographic monitoring: Focus on atrial
fibrillation. J Am Coll Cardiol. 2011;58(17):1741‐1749.
82. U.S. Food and Drug Administration (FDA). Zio Patch
Model Z100. Medical Magnetic Tape Recorder. 510(k) No.
K090363. Rockville, MD: FDA; May 8, 2009.
83. U.S. Food and Drug Administration (FDA). eCARD and
cCARD. Telephone Electrocardiograph Transmitter and
Receiver. 510(k) No. K081471. Rockville, MD: FDA; June
24, 2008.
84. U.S. Food and Drug Administration (FDA). ZEUS System
Model S100. Programmable Diagnostic Computer. 510(k)
No. K091075. Rockville, MD: FDA; July 21, 2009.
85. U.S. Food and Drug Administration (FDA). Zio Patch.
Medical Magnetic Tape Recorder. 510(k) No. K113862.
Rockville, MD: FDA; February 6, 2012.
86. Hanke T, Charitos EI, Stierle U, et al. Twenty‐four‐hour
holter monitor follow‐up does not provide accurate heart
rhythm status after surgical atrial fibrillation ablation
therapy: Up to 12 months experience with a novel
permanently implantable heart rhythm monitor device.
Circ. 2009;120(11 Suppl):S177‐S184.
87. Hindricks G, Pokushalov E, Urban L, et al., XPECT Trial
Investigators. Performance of a new leadless implantable
cardiac monitor in detecting and quantifying atrial
fibrillation: Results of the XPECT trial. Circ Arrhythm
Electrophysiol. 2010;3(2):141‐147.
88. Ip JH, Viqar‐Syed M, Grimes D, et al. Surveillance of AF
recurrence post‐surgical AF ablation using implantable
cardiac monitor. J Interv Card Electrophysiol.
2012;33(1):77‐83.
89. Rosenberg MA, Samuel M, Thosani A, Zimetbaum PJ. Use
of a noninvasive continuous monitoring device in the
management of atrial fibrillation: A pilot study. Pacing
Clin Electrophysiol. 2013;36(3):328‐333.
90. Task Force for the Diagnosis and Management of
Syncope; European Society of Cardiology (ESC); European
Heart Rhythm Association (EHRA); Heart Failure
Association (HFA); Heart Rhythm Society (HRS), Moya A,
Sutton R, Ammirati F, et al. Guidelines for the diagnosis
and management of syncope (version 2009). Eur Heart J.
2009;30(21):2631‐2671.
91. Higgins SL. A novel patch for heart rhythm monitoring: Is
the Holter monitor obsolete? Future Cardiol.
2013;9(3):325‐333.
92. Turakhia MP, Hoang DD, Zimetbaum P, et al. Diagnostic
utility of a novel leadless arrhythmia monitoring device.
Am J Cardiol. 2013;112(4):520‐524.
93. Ziegler PD, Glotzer TV, Daoud EG, et al. Detection of
previously undiagnosed atrial fibrillation in patients with
stroke risk factors and usefulness of continuous
monitoring in primary stroke prevention. Am J Cardiol.
2012;110(9):1309‐1314.
94. Davis S, Westby M, Pitcher D, Petkar S. Implantable loop
recorders are cost‐effective when used to investigate
transient loss of consciousness which is either suspected
to be arrhythmic or remains unexplained. Europace.
2012;14(3):402‐409.
95. Ruwald MH, Zareba W. ECG monitoring in syncope. Prog
Cardiovasc Dis. 2013;56(2):203‐210.
96. Hong P, Sulke N. Implantable diagnostic monitors in the
early assessment of syncope and collapse. Prog
Cardiovasc Dis. 2013;55(4):410‐417.
97. Cotter PE, Martin PJ, Ring L, et al. Incidence of atrial
fibrillation detected by implantable loop recorders in
unexplained stroke. Neurology. 2013;80(17):1546‐1550.
98. Mittal S, Pokushalov E, Romanov A, et al. Long‐term ECG
monitoring using an implantable loop recorder for the
detection of atrial fibrillation after cavo‐tricuspid isthmus
ablation in patients with atrial flutter. Heart Rhythm.
2013;10(11):1598‐1604.
99. Prabhakaran S, Elkind MSV. Cryptogenic stroke. UpToDate
[online serial]. Waltham, MA: UpToDate; reviewed
October 2013.
100. Barrett PM, Komatireddy R, Haaser S, et al. Comparison
of 24‐hour Holter monitoring with 14‐day novel adhesive
patch electrocardiographic monitoring. Am J Med.
2014;127:95.e11‐95.e17.
101. Gladstone DJ, Spring M, Dorian P, et al.; EMBRACE
Investigators and Coordinators. Atrial fibrillation in
patients with cryptogenic stroke. N Engl J Med.
2014;370(26):2467‐2477.
102. Kamel H. Heart‐rhythm monitoring for evaluation of
cryptogenic stroke. N Engl J Med.
2014;370(26):2532‐2533.
103. Sanna T, Diener HC, Passman RS, et al.; CRYSTAL AF
Investigators. Cryptogenic stroke and underlying atrial
fibrillation. N Engl JMed. 2014;370(26):2478‐2486.
104. Chung EH, Guise KD. QTC intervals can be assessed with
the AliveCor heart monitor in patients on dofetilide for
atrial fibrillation. J Electrocardiol. 2015;48(1):8‐9.
105. Baquero GA, Banchs JE, Ahmed S, et al. Surface 12 lead
electrocardiogram recordings using smart phone
technology. J Electrocardiol. 2015;48(1):1‐7.
106. Muhlestein JB, Le V, Albert D, et al. Smartphone ECG for
evaluation of STEMI: Results of the ST LEUIS Pilot Study. J
Electrocardiol. 2015;48(2):249‐259.
107. Peritz DC, Howard A, Ciocca M, Chung EH. Smartphone
ECG aids real time diagnosis of palpitations in the
competitive college athlete. J Electrocardiol.
2015;48(5):896‐899.
108. Favilla CG, Ingala E, Jara J, et al. Predictors of finding
occult atrial fibrillation after cryptogenic stroke. Stroke.
2015;46(5):1210‐1215.
109. Miller DJ, Khan MA, Schultz LR, et al. Outpatient cardiac
telemetry detects a high rate of atrial fibrillation in
cryptogenic stroke. J Neurol Sci. 2013;324(1‐2):57‐61
110. Rothman SA, Laughlin JC, Seltzer J, et al. The diagnosis of
cardiac arrhythmias: A prospective multi‐center
randomized study comparing mobile cardiac outpatient
telemetry versus standard loop event monitoring. J
Cardiovasc Electrophysiol. 2007;18(3):241‐247.
111. Tayal AH, Tian M, Kelly KM, et al. Atrial fibrillation
detected by mobile cardiac outpatient telemetry in
cryptogenic TIA or stroke. Neurology.
2008;71(21):1696‐1701.
112. Rabinstein AA, Fugate JE, Mandrekar J, et al. Paroxysmal
atrial fibrillation in cryptogenic stroke: A case‐control
study. J Stroke Cerebrovasc Dis. 2013;22(8):1405‐1411.
Copyright Aetna Inc. All rights reserved. Clinical Policy Bulletins are developed by Aetna to assist in administering
plan benefits and constitute neither offers of coverage nor medical advice. This Clinical Policy Bulletin contains
only a partial, general description of plan or program benefits and does not constitute a contract. Aetna does not
provide health care services and, therefore, cannot guarantee any results or outcomes. Participating providers are
independent contractors in private practice and are neither employees nor agents of Aetna or its affiliates.
Treating providers are solely responsible for medical advice and treatment of members. This Clinical Policy
Bulletin may be updated and therefore is subject to change.
Copyright © 2001‐2016 Aetna Inc.
AETNA BETTER HEALTH® OF PENNSYLVANIA
Amendment to
Aetna Clinical Policy Bulletin Number: 0073
Cardiac Event Monitors
There are no amendments for Medicaid.
www.aetnabetterhealth.com/pennsylvania
Revised 04/2017