CPT 2002 CPT 5 coding changes will be instituted in 2002. The coding changes will create a three level reporting process: I. The CPT code II. The CPT process III. The CPT product explanation Levels II and III will provide further explanation for the reason the professional services were performed. These levels will also be utilized to describe research-related services. CPT manuals should be purchased annually.   Return to Contents | Return to Billing Compliance