For Part B services, Medicare pays physicians based on the services they provide. The American Medical Association (AMA) developed Current Procedural Terminology (CPT) codes to create a taxonomy of procedures that physicians perform. Does the Centers for Medicare and Medicaid Services (CMS) use these codes for payment?
The answer is yes and no. Officially, CMS uses Healthcare Common Procedure Coding System (HCPCS) codes. These codes are used to classify about 6,700 distinct services. Although CMS does not officially use CPT codes, the HCPCS are closely related to CPT codes. In fact, there are two sets of HCPCS codes. “The first set, HCPCS Level I, are based on and identical to CPT codes…Level II HCPCS codes are used by medical suppliers other than physicians, such as ambulance services or durable medical equipment.”