CPT code 57109 represents an extensive gynecologic oncologic operation: removal of the upper half of the vagina with paravaginal tissue and bilateral pelvic lymph node dissection, plus para‑aortic lymph node biopsy. This code captures high‑acuity surgical care with substantial implications for operative time, perioperative resources, and postoperative management. Nationally, procedures coded with 57109 are relevant to hospitals, oncology surgeons, and payers because they often drive inpatient utilization, complexity-based reimbursement, and guideline‑driven oncologic staging.

Key payers addressed in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical intent and service setting, plus benchmarking context where available. The publication outlines coding and billing considerations, typical sites of service, and the clinical scenarios that commonly prompt use of 57109 (major vaginal resection with pelvic and para‑aortic nodal assessment).

This summary prepares clinicians, coding professionals, and policy analysts to understand where 57109 fits within gynecologic oncology practice, what payers commonly encounter when authorizing and adjudicating these claims, and what further details (benchmarks, payer policies, and related codes) the full publication examines. Data not available in the input will be noted in the detailed sections.