CPT® Code 36002

An injection procedure is conducted for the percutaneous treatment of an extremity pseudoaneurysm, which typically arises as a complication from arterial puncture during percutaneous diagnostic or therapeutic vascular interventions. A pseudoaneurysm occurs when the site of the arterial puncture does not seal properly, leading to blood leakage into the surrounding soft tissue. This leakage results in the formation of a cavity adjacent to the puncture site within the artery. Unlike a hematoma, which is a localized collection of blood, the cavity of a pseudoaneurysm fills and empties with each heartbeat due to the pulsatile nature of blood flow. To address this condition, imaging guidance, which is separately reportable, is utilized to introduce a catheter into the pseudoaneurysm. A blood clotting agent, such as thrombin solution, is then injected into the cavity until thrombosis occurs, effectively occluding the pseudoaneurysm. After the injection procedure, it is essential to assess the native blood vessels to confirm that they remain patent and unobstructed, ensuring proper blood flow is restored following the intervention.