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What CPT code is used for the aspiration of thrombus along 36902/76937? "The 70% stenosis at the edge of the stent, as well as the intrastent stenosis, were maximally dilated using an 8 mm x 8 cm Gladiator angioplasty balloon. Prolonged balloon inflation was performed. Repeat angiography demonstrates wide patency at the treatment site with minimal recoiling. A non-pulsatile thrill was palpated within the graft at this time. In order to allow easier access to the venous graft limb, it was decided to aspirate thrombus from the thrombosed pseudoaneurysm of venous graft limb. After administering local anesthesia to the overlying skin using 1% Xylocaine solution, an 18-gauge needle was advance into the pseudoaneurysm. Approximately 15 mL of liquified thrombus was aspirated. Hemostasis was achieved using manual compression. The sheath was then removed and hemostasis was achieved using manual compression. Liquified thrombus was aspirated from thrombosed venous limb pseudoaneurysm in order to make it easier to access stents within the venous limb during hemodialysis."