CPT® Code 35566

The procedure described by CPT® Code 35566 involves the surgical creation of a bypass graft using a vein, specifically targeting the femoral artery and its branches, which include the anterior tibial, posterior tibial, peroneal artery, or other distal vessels. This surgical intervention is typically indicated for patients with significant arterial occlusion or blockage that impairs blood flow to the lower extremities. The procedure begins with a groin incision on the affected side, allowing the surgeon to access the femoral artery directly. Following this, the distal anastomosis site, which is the location where the graft will connect to the artery, is also exposed. A tunnel is then created to facilitate the passage of the vein graft from the femoral artery to the distal site. The vein graft, often harvested from the saphenous vein, is prepared through a careful dissection process that involves ligating and dividing branches of the vein. Once the graft is secured, it is anastomosed, or surgically connected, to both the femoral artery and the distal artery, ensuring that blood flow can bypass the obstructed area. The procedure concludes with checks for blood flow and patency of the graft, utilizing Doppler ultrasound and evaluating distal pulses to confirm successful restoration of circulation.