CPT® Code 35184

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 in various locations throughout the vascular system and can differ significantly in terms of size and length. The presence of this abnormal communication allows blood to flow from the artery into the vein under high pressure. Since the walls of veins are not designed to withstand such high-pressure blood flow, they can become distended, leading to an enlargement of the venous structure. This increased blood flow can result in various cardiovascular complications over time. Repairing congenital arteriovenous fistulas can be particularly challenging due to their potential extension into surrounding anatomical structures. To facilitate the repair process, angiography may be performed to accurately map the course of the fistula. The surgical procedure involves exposing the fistula, isolating it from surrounding tissues, and then severing the abnormal connection. The artery and vein are subsequently repaired, either with sutures or by using a synthetic patch or vein graft, ensuring that normal blood flow is restored. This procedure is specifically designated for cases involving the extremities, distinguishing it from similar repairs in other anatomical regions.