The ICD-10-CM update for 2021 became effective on October 1, 2020. The 2021 edition contains 72,616 codes that includes 490 additions, 47 code revisions and 58 deletions. There are also 162 new headers along with 7 deletions and 5 revisions. The ICD-CM code set in the United States is maintained by the ICD Coordination and Maintenance Committee. This committee includes representatives from the National Center for Health Statistics (NCHS) and the Centers for Medicare and Medicaid Services (CMS). This committee reviews all requests for changes or additions to the code set. The Director of NCHS and the Administrator of CMS make the final coding data set decisions.