CPT® Code 33419

Add-On Code

Transcatheter mitral valve repair, percutaneous approach, including transseptal puncture when performed; additional prosthesis(es) during same session (List separately in addition to code for primary procedure)

The transcatheter mitral valve repair procedure, identified by CPT® Code 33419, is a minimally invasive technique aimed at addressing mitral valve regurgitation. This condition arises when the mitral valve's anterior and posterior leaflets do not close completely during ventricular systole, resulting in the backflow of blood into the left atrium. The procedure typically employs an edge-to-edge leaflet repair method, utilizing a prosthesis such as the MitraClip, which is designed to enhance the physiological function of the mitral valve and significantly reduce regurgitation. The approach is percutaneous, meaning it is performed through the skin, and often involves a transseptal puncture, which is the creation of an opening in the septum of the heart to access the left atrium. During the procedure, advanced imaging techniques such as fluoroscopy and transesophageal echocardiography (TEE) are utilized to guide the placement of the prosthesis accurately. A steerable guide catheter is introduced into the vascular system, followed by the advancement of a dilator to facilitate access to the left atrium. This careful approach minimizes the risk of damage to the surrounding cardiac structures. Once the prosthesis is positioned correctly above the regurgitant area, it is deployed to create a double orifice opening, allowing for improved blood flow. The use of CPT® Code 33419 is specifically for instances where additional prosthesis(es) are required during the same session, complementing the primary procedure denoted by CPT® Code 33418.