ICD-9-CM & HCPCS Codes | AHA Coding Clinic | Official Clearinghouse| AHA Central Office

The American Hospital Association's Central Office serves as the U.S. Official Clearinghouse on medical coding for the proper use of the ICD-9-CM systems and Level I HCPCS (CPT-4 codes) for hospitals and certain Level II HCPCS codes.

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