CPT code 33611 identifies a cardiothoracic surgical repair in which an artificial tunnel graft is placed to redirect blood from a ventricular septal defect into the aorta. This intracardiac grafting procedure is clinically significant for correcting abnormal intracardiac shunting and is performed in hospital-based surgical settings. Nationally, the code is relevant for congenital and structural heart disease management and for tracking utilization of complex cardiac surgical interventions.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical intent of the code, typical sites of service, and the payer landscape relevant to coverage and billing. The publication also provides benchmarks and policy context where available, highlights common billing modifiers associated with complex surgical services, and summarizes clinical considerations tied to the code’s use. If specific administrative or coding crosswalks are needed, the reader will be directed to appropriate resources; missing input fields are noted as unavailable.