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History of DRGs ï§ DRGs were first developed in the 1970s and first used for hospital payment by the U.S. Medicare system in 1983 and are now used in many high income countries ï§ A number of different DRG systems have been developed: Original Yale DRGs (1970's) Medicare HCFA/CMS DRGs (1983) All Patient DRGs (AP-DRG) Yale Refined DRGs (RDRGs) 3M APR DRGs 1970 1980 1990 2000 MS-DRGs 2010 Source: American Health Information Management Association. "Evolution of DRGs (Updated)." Journal of AHIMA (Updated April 2010) 14
