CPT® Code 33702

The procedure described by CPT® Code 33702 involves the surgical repair of a sinus of Valsalva fistula, which is performed with the assistance of cardiopulmonary bypass. The sinus of Valsalva refers to the three anatomical recesses located in the proximal portion of the aorta, corresponding to the three cusps of the aortic valve. A fistula in this area is typically a congenital defect, but it can also arise from other causes such as penetrating or non-penetrating trauma to the chest, complications following surgical procedures, or as a result of endocarditis. During the procedure, cardiopulmonary bypass is established through the use of venous and arterial cannulation, allowing for the heart to be temporarily stopped and blood to be diverted. The ascending aorta is clamped, and an incision is made to access the aorta, where the defect in the sinus of Valsalva is located. The surgical team inspects the aortic valve cusps and the coronary ostia to ensure there are no additional issues. The repair of the fistula is accomplished using sutures or by placing a patch made of pericardial or synthetic material. Once the repair is completed, the ascending aorta is closed, restoring normal blood flow. This procedure is critical for addressing the complications associated with a sinus of Valsalva fistula and preventing further cardiovascular issues.