The document summarizes changes to Medicare Severity Diagnosis Related Groups (MS-DRGs) and ICD-10 codes for 2019 and provides an outlook for 2020. In 2019, 15 MS-DRGs were deleted and 19 were added, and there were 435 ICD-10 code changes. For 2020, 28 MS-DRGs were deleted and 28 added, along with 252 new ICD-10 diagnosis codes and 1,660 deleted ICD-10 procedure codes. The biggest changes related to peripheral ECMO and transcatheter mitral valve repair. The areas most impacted by severity shifts were various body systems and factors influencing healthcare status. Two DRGs were removed from the transfer policy list while three new ones did not