CPT code 45119 describes a complex restorative proctocolectomy performed via combined abdominal and perineal approaches, with construction of a colonic reservoir and optional temporary diverting enterostomy. This procedure is clinically significant nationwide for treatment of conditions such as Crohn colitis, rectal cancer, and familial polyposis where preservation of an uninterrupted digestive tract is desired. It represents a high-acuity surgical service with substantial inpatient resource use and distinct coding and coverage considerations.

Key national payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical indications and service context, typical site-of-service expectations, and the coding definition. The publication also summarizes common modifiers and payer considerations where available, benchmark framing for inpatient surgical procedures, and policy or coverage update highlights relevant to this procedure.

This summary is intended to orient clinicians, billing professionals, and policy analysts to the clinical and administrative significance of CPT code 45119, and to outline the topics covered in the full publication, including benchmarks, payer policy implications, and clinical context for use of the code. Data not available in the input will be noted where applicable in the detailed sections.