CPT code 76812 designates an add-on transabdominal ultrasound performed to examine an additional fetus in detail beyond the routine fetal and maternal examination. As an add-on imaging code, it captures supplemental imaging effort when multiple fetuses require separate, focused assessment during the same encounter. Nationally, this code matters for accurate reporting of reproductive imaging complexity, resource allocation in prenatal care, and appropriate billing for multiple-gestation evaluations.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical intent and service context for 76812, payer coverage considerations and common modifiers used with fetal ultrasound add-on services, and the typical sites where this service is delivered. The publication also outlines benchmarking conventions, coding relationships to routine fetal ultrasound services, and practical billing notes relevant to multi-fetal imaging encounters.

This summary is intended for clinicians, billing professionals, and policy analysts seeking a national perspective on the code’s clinical role, documentation expectations, and how payers commonly treat add-on fetal ultrasound services.