CPT® Code 35601

A bypass graft is a surgical procedure designed to create an alternative pathway for blood flow around a diseased or obstructed segment of the common carotid artery, specifically directing blood to the ipsilateral internal carotid artery. This procedure utilizes a graft that is not derived from the patient's own veins, which may include synthetic materials. The operation is performed through an incision in the neck, allowing the surgeon to access the common carotid artery directly. During the procedure, clamps are applied to the artery to control blood flow and ensure a sterile environment for the grafting process. The surgeon may ligate the artery above the obstruction, securing one end of the graft to the common carotid artery. After the graft is in place, a vessel clamp is used to temporarily occlude the graft while the arterial clamp is released, enabling the surgeon to check for any leaks at the anastomosis site. Subsequently, the internal carotid artery is accessed, and the other end of the graft is sutured into it, ensuring that blood can flow freely through the newly established route. The procedure concludes with a thorough inspection for leaks and patency of the graft before the neck incision is closed, effectively restoring adequate blood flow to the brain and reducing the risk of ischemic events.