Final answer:
The ICD-9-CM Coordination and Maintenance Committee oversees updates to the ICD-9-CM coding system and is co-chaired by representatives from NCHS and CMS.
Step-by-step explanation:
The ICD-9-CM Coordination and Maintenance Committee is responsible for overseeing updates and modifications to the ICD-9-CM, which is the International Classification of Diseases, Ninth Revision, Clinical Modification. This committee plays a significant role in ensuring that the coding system accurately reflects current clinical practice and includes the most up-to-date medical information. The committee is co-chaired by representatives from the National Center for Health Statistics (NCHS) and the Centers for Medicare & Medicaid Services (CMS), which are two major health agencies in the United States.