CPT® Code 35638

A bypass graft is a surgical procedure designed to create an alternative pathway for blood flow around a diseased or obstructed segment of the lower aorta, specifically to one or both iliac arteries. In this procedure, a graft made from materials other than the patient's own veins is utilized. The choice of synthetic grafts is often preferred due to their ability to accommodate the larger diameters of the aorta and iliac arteries, which can enhance blood flow and reduce the risk of complications associated with using natural vein material. The procedure typically involves making an incision in the lower abdomen to access the aorta. Once the aorta is exposed, clamps are applied above the area of obstruction to control blood flow. The surgeon may tie off the aorta above the diseased section and then attach one end of the graft to the aorta. After securing the graft, the clamp is released to check for any leaks at the connection site, known as the anastomosis. Subsequently, the iliac artery is clamped distal to the graft site, and the other end of the graft is sutured into the iliac artery. The graft site is again assessed for leaks and patency before the abdominal incision is closed. This surgical intervention effectively reroutes blood flow, bypassing the obstructed area of the aorta and restoring adequate circulation to the lower extremities.