CPT® Code 33710

The procedure described by CPT® Code 33710 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 typically arises from congenital defects but can also result from various factors such as penetrating or non-penetrating chest trauma, complications following surgical procedures, or infections like 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 opened to access the sinus of Valsalva, where the defect is identified and repaired. This repair may involve suturing or the application of a patch made from pericardial or synthetic material. Additionally, this procedure includes the repair of a ventricular septal defect (VSD), which can be addressed either through the aorta or via a separate incision in the heart chambers. The VSD repair is similarly executed using sutures or patches. Overall, this complex surgical intervention aims to correct significant cardiac anomalies and restore normal heart function.