CPT® Code 64821

The procedure described by CPT® Code 64821 refers to a sympathectomy of the radial artery. A sympathectomy is a surgical intervention that involves the cutting or removal of sympathetic nerve fibers, which are part of the autonomic nervous system responsible for regulating blood flow and other involuntary functions. This specific procedure targets the radial artery, which is one of the major arteries in the forearm that supplies blood to the hand and fingers. The primary goal of performing a sympathectomy on the radial artery is to enhance blood circulation to the digits, particularly in patients suffering from severe ischemia—a condition characterized by insufficient blood flow. This procedure is often indicated for patients with conditions such as Raynaud's syndrome, which causes episodes of reduced blood flow to the fingers and toes, and scleroderma, a disease that can lead to vascular complications. By severing the sympathetic nerve connections to the radial artery, the procedure aims to alleviate symptoms associated with these conditions, thereby improving the overall blood supply to the affected areas. The surgical technique may involve the use of an operating microscope to ensure precision during the dissection and separation of the artery from adjacent structures.