CPT code 49020 represents an open surgical incision and drainage of an intra-abdominal abscess or localized peritoneal infection not involving the appendix. This procedure is clinically significant because timely drainage of intra-abdominal collections is critical to resolving infection, preventing sepsis, and avoiding further intra-abdominal complications. Nationally, CPT code 49020 is relevant across acute care hospitals and surgical centers where operative management of abdominal infections is performed.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a concise overview of clinical context and coding intent, followed by payer coverage considerations and typical sites of service. Readers will find benchmarks on utilization and reimbursement patterns where available, summaries of recent policy updates affecting inpatient and outpatient surgical billing, and guidance on common billing scenarios and documentation elements tied to the code’s clinical purpose.

The material is intended for coding professionals, hospital billing departments, surgical teams, and policy analysts seeking a national perspective on coding, coverage, and clinical use of CPT code 49020 for drainage of intra-abdominal abscesses.