CPT code 76817 denotes a transvaginal ultrasound of the pregnant uterus used to examine the fetus and maternal pelvic organs. This diagnostic obstetric imaging code is important nationally because transvaginal ultrasound provides high-resolution early pregnancy assessment, evaluation of fetal viability, and detailed pelvic organ visualization when transabdominal imaging is limited. Accurate coding affects clinical documentation, authorization, and billing across payers.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise briefing on the clinical context of transvaginal obstetric ultrasound, typical sites of service, and common billing considerations tied to the procedure. The publication summarizes benchmark payment patterns, relevant policy updates that affect coverage and prior authorization practices, and operational notes on documentation expectations. It also outlines areas where clinical indications commonly justify the transvaginal approach and highlights coding nuances that impact claim adjudication.

This material is written for a national audience of clinicians, billing professionals, and policy analysts seeking an overview of the code’s clinical role, payer coverage landscape, and the policy context that influences reimbursement and utilization.