CPT® Code 33477

Transcatheter pulmonary valve implantation, percutaneous approach, including pre-stenting of the valve delivery site, when performed

The CPT® Code 33477 refers to the procedure of transcatheter pulmonary valve implantation performed via a percutaneous approach. This innovative technique is primarily utilized to address dysfunctions in the right ventricular outflow tract (RVOT), which can manifest as either stenosis (narrowing) or regurgitation (backward flow) in the conduit connecting the right ventricle to the pulmonary artery. Conditions that may necessitate this procedure include tetralogy of Fallot, both with and without a conduit, as well as cases involving failing pulmonic bioprosthetic valves, truncus arteriosus, pulmonary atresia with ventricular septal defects (VSD), and transposition of the great arteries accompanied by VSD and pulmonic stenosis. The procedure involves the use of a specialized delivery system that includes a balloon catheter designed to facilitate the implantation of the pulmonary valve. The valve is crimped and loaded into a polytetrafluoroethylene sheath, which is then introduced into the vascular system through a selected access site, such as the femoral vein, subclavian vein, or internal jugular vein. This minimally invasive approach allows for precise placement of the valve within the heart, significantly improving patient outcomes by restoring proper blood flow from the right ventricle to the pulmonary artery.