Who maintains icd-9-cm?

The ICD-9-CM (International Classification of Diseases, Ninth Revision, Clinical Modification) was maintained by the National Center for Health Statistics (NCHS) in the United States, which is part of the Centers for Disease Control and Prevention (CDC). However, it is important to note that ICD-9-CM has largely been replaced by ICD-10-CM since October 1, 2015, and is no longer actively maintained. The transition to ICD-10 was intended to provide more detailed and accurate coding for diagnoses and procedures.