Top 200 Level I CPT Codes Ranked by Services Reports

The Top 200 Level I CPT Codes Ranked by Services reports list the 200 most frequently billed Level I Current Procedural Terminology (CPT) codes under Medicare Part B for a given year, ranked by the number of services provided. Level I CPT codes are five‑digit numeric codes used to report physician and outpatient procedures and services (e.g., office visits, surgeries, imaging). By showing which CPT codes are used most often, the report highlights the most common procedures and services delivered to Medicare beneficiaries and supports analysis of utilization patterns and service frequency in outpatient care.