CPT code 76831 denotes a diagnostic ultrasound procedure—hysterosonography—where saline is infused into the uterine cavity to enhance endometrial and intrauterine lesion visualization; color flow Doppler may be used. This imaging technique is clinically important for evaluating abnormal uterine bleeding, uterine structure, and intrauterine pathology when transvaginal ultrasound is inconclusive. Nationally, appropriate coding of 76831 affects imaging utilization tracking, prior authorization processes, and payment for gynecologic diagnostic services.

Key payers considered include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code's clinical context and service setting, followed by benchmark considerations and common payer coverage patterns. The publication outlines typical sites of service (outpatient radiology or gynecology clinics, ambulatory surgical centers, and hospital outpatient departments), expected clinical indications, and coding nuances relevant to billing teams and administrative staff. Where available, the report highlights benchmark measures and recent policy updates that influence authorization and reimbursement practices for hysterosonography. Data not available in the input is explicitly noted in relevant sections.