CPT® Code 33534

Coronary artery bypass graft (CABG) surgery is a critical procedure aimed at restoring blood flow to the heart by bypassing narrowed or blocked coronary arteries. The coronary arteries are essential as they supply oxygen and nutrients to the heart muscle. When these arteries become narrowed or blocked due to conditions such as atherosclerosis, it can lead to ischemic heart disease and potentially result in a myocardial infarction, commonly known as a heart attack. CABG surgery is performed to reroute blood around these obstructed arteries, thereby improving blood flow and reducing the risk of heart-related complications. During the procedure, one or more arterial grafts are harvested from the patient's body, with common sources including the internal mammary artery (IMA), the inferior epigastric artery (IEA), and the radial artery. These grafts can be utilized as pedicle grafts, which include surrounding tissues, or skeletonized grafts, where all surrounding tissues are removed, leaving only the outer layer of the graft. The surgical approach typically involves a median sternotomy to access the thoracic cavity, allowing for the careful harvesting of the IMA and the subsequent placement of the grafts to bypass the affected coronary arteries. The procedure can be performed using either an off-pump technique, where the heart continues to beat during surgery, or a cardiopulmonary bypass technique, where the heart is temporarily stopped and the patient is connected to a heart-lung machine. The ultimate goal of CABG surgery is to enhance blood flow to the heart, alleviate symptoms of coronary artery disease, and improve overall cardiac function.