CPT® Code 75959

Placement of distal extension prosthesis(s) (delayed) after endovascular repair of descending thoracic aorta, as needed, to level of celiac origin, radiological supervision and interpretation

The CPT® Code 75959 refers to the placement of a distal extension prosthesis in a delayed manner following an endovascular repair of the descending thoracic aorta. This procedure is performed as necessary to reach the level of the celiac origin and involves comprehensive radiological supervision and interpretation. During this process, a series of imaging techniques are utilized to ensure the accurate placement and functionality of the prosthesis. The procedure begins with angiography of the aorta and its branches, which is essential for visualizing the vascular anatomy prior to the deployment of the endovascular extension prosthesis. Fluoroscopic guidance is employed throughout the procedure, facilitating the precise placement of guidewires, catheters, and the prosthesis itself. Additionally, intraprocedural angiography is conducted to confirm the correct positioning of the prosthesis, identify any potential endoleaks, and assess the blood flow in the surrounding vessels. A road-mapping angiography is also performed to provide a detailed view of the aortic anatomy before the delivery of the extension prosthesis. After the prosthesis is deployed, a post-deployment aortogram is carried out to evaluate the position of the extension prosthesis, check for endoleaks, and ensure the patency of the aorta. The physician is responsible for providing a written interpretation of all angiographic and fluoroscopic imaging conducted during the procedure. It is important to note that CPT® Code 75958 is used for radiological supervision and interpretation related to the placement of a proximal extension prosthesis, while CPT® Code 75959 is specifically designated for the distal extension prosthesis placement.