Medical Coding

HCPCS, ICD-9 and ICD-10 Codes

The American Hospital Association's Central Office serves as the official U.S. Clearinghouse on medical coding for the proper use of the ICD-9-CM and ICD-10-CM/PCS systems and Level I HCPCS (CPT-4 codes) for hospital providers and certain Level II HCPCS codes for hospitals, physicians and other health professionals.