CPT® Code 37660

The procedure described by CPT® Code 37660 involves the ligation of the common iliac vein, which is a critical surgical intervention aimed at managing thromboembolic conditions. Ligation refers to the surgical technique of tying off a vein to obstruct blood flow, which is essential in preventing serious complications such as pulmonary embolism in patients who have developed thromboembolism in the femoral or iliac veins. This procedure is particularly indicated for patients who present with blood clots in these veins, as it helps to mitigate the risk of clots traveling to the lungs. During the ligation, the physician typically uses silk suture or fine wire to securely tie the vein. Prior to the ligation, a venography may be performed to accurately locate the thromboembolism, ensuring that the surgical intervention is targeted and effective. The process involves making a skin incision over the common iliac vein, which is located proximal to the thromboembolism, allowing the surgeon to expose the vein. Once exposed, the vein is carefully dissected from the surrounding tissue before being ligated to achieve the desired interruption of blood flow.