CPT® Code 35182

A congenital arteriovenous fistula is a vascular anomaly characterized by an abnormal connection between an artery and a vein that is present from birth. This condition can manifest anywhere within the vascular system and can vary significantly in terms of size and length. The presence of this abnormal communication allows blood to flow under high pressure from the artery directly into the vein. Since the walls of veins are not designed to withstand the high-pressure flow typical of arterial blood, they can become stretched and enlarged over time. This enlargement can lead to an increased volume of blood flowing into the venous structure, which may result in various cardiovascular complications. Repairing congenital arteriovenous fistulas can be particularly challenging due to their potential extension into surrounding anatomical structures. To facilitate the repair process, a separate angiography may be performed to clearly outline the path of the fistula. The surgical procedure involves exposing the fistula, carefully dissecting it from adjacent tissues, and placing clamps on both the artery and vein to isolate the fistula. The abnormal connection is then severed, and the artery and vein are repaired, either with sutures or by using a synthetic patch or vein graft. After ensuring hemostasis, the overlying tissues are closed in layers. This procedure is specifically coded as CPT® 35182 when performed in the thorax and abdomen, distinguishing it from similar procedures in other anatomical locations.