CPT® Code 35631

An aortoceliac, aortomesenteric, or aortorenal bypass graft is a surgical procedure designed to create a new pathway for blood flow around a diseased or obstructed segment of the celiac artery, mesenteric artery, or renal artery. This procedure utilizes grafting material sourced from areas other than the patient's veins, which distinguishes it from other types of bypass grafts that may use vein grafts. The celiac artery, also known as the celiac trunk, is the first major branch of the aorta that emerges just below the diaphragm and is responsible for supplying blood to several vital organs, including the liver, stomach, and spleen through its branches: the hepatic artery, left gastric artery, and splenic artery. The mesenteric arteries, which include the superior and inferior mesenteric arteries, are crucial for delivering blood to the intestines, with the superior mesenteric artery serving the small intestine and the upper part of the large intestine, while the inferior mesenteric artery supplies the lower part of the large intestine and rectum. The renal arteries are responsible for supplying blood to the kidneys. When any of these arteries become obstructed or diseased, it can lead to significant complications, necessitating surgical intervention. The procedure involves making an incision in the upper abdomen to access the affected arteries, carefully dissecting them from surrounding tissues, and then attaching a synthetic graft to bypass the obstructed area, thereby restoring adequate blood flow to the affected organs.