CPT® Code 33517

Add-On Code

Coronary artery bypass, using venous graft(s) and arterial graft(s); single vein graft (List separately in addition to code for primary procedure)

Coronary artery bypass graft (CABG) is a surgical procedure aimed at improving blood flow to the heart by bypassing blocked or narrowed coronary arteries. This procedure is critical for patients suffering from ischemic heart disease, which can lead to serious conditions such as myocardial infarction (heart attack). The coronary arteries are responsible for supplying oxygen and nutrients to the heart muscle, and any obstruction in these arteries can significantly impair heart function. In CABG, a combination of venous and arterial grafts is utilized to create a new pathway for blood to flow, effectively rerouting it around the affected areas. The specific code CPT® 33517 refers to the use of a single venous graft in this procedure, which is reported separately in addition to the primary procedure code. Typically, the greater saphenous vein from the leg is harvested for this purpose. The surgical process involves making an incision in the chest, dividing the sternum, and retracting the ribs to access the heart. Depending on the technique employed, the surgery may be performed on a beating heart using the off-pump coronary artery bypass (OPCAB) method, or it may involve the use of cardiopulmonary bypass. In either case, the prepared vein graft is meticulously sewn into place, connecting one end to the ascending aorta and the other end to the coronary artery beyond the blockage, thereby restoring adequate blood flow to the heart muscle.