CPT® Code 0645T

Transcatheter implantation of coronary sinus reduction device including vascular access and closure, right heart catheterization, venous angiography, coronary sinus angiography, imaging guidance, and supervision and interpretation, when performed

The CPT® Code 0645T refers to the transcatheter implantation of a coronary sinus reduction device, a specialized procedure aimed at treating refractory angina in patients with obstructive coronary artery disease. This procedure involves the use of a coronary sinus reducer (CSR), which is an expandable, hourglass-shaped device made of stainless steel. The CSR is designed to be inserted into the coronary sinus, a critical anatomical structure that collects deoxygenated blood from the heart. By inducing localized narrowing within the coronary sinus, the device increases pressure in this area, thereby redistributing blood flow to the myocardium, which is the heart muscle itself. This redistribution is essential for alleviating symptoms of angina that do not respond to conventional treatments. The implantation process begins with vascular access, typically through the right internal jugular vein, followed by right heart catheterization and venous angiography to visualize the anatomy of the heart and surrounding vessels. Imaging guidance is employed throughout the procedure to ensure accurate placement of the device. The procedure also includes supervision and interpretation of the imaging results, which are crucial for confirming the correct positioning of the CSR and assessing any potential complications. Overall, this procedure is a sophisticated intervention that combines advanced imaging techniques with catheter-based technology to improve blood flow and reduce angina symptoms in affected patients.