Under fluoroscopic guidance, the upper arm dialysis access fistula was catheterized and fistulogram was obtained. There was a greater than 50% stenosis within the mid cephalic vein that was dilated with an 8 mm angioplasty balloon and high pressure angioplasty balloon with no effect. The lesion was then dilated with a cutting balloon. Following angioplasty with a cutting balloon there was a leak identified from the cephalic vein. Multiple attempts at balloon tamponade were performed, and these were unsuccessful at controlling the leak. An 8 mm x 6 cm fluency stent graft was then placed across the leak and dilated to 8 mm. Follow-up fistulogram was obtained and showed free flow of contrast through the stent. Cephalic arch and central veins are patent. The arterial anastomosis is widely patent. There is a small pseudoaneurysm in the cephalic vein near the arterial anastomosis.
I am assigning codes 36147 and 37238. Should something be stated about the perforation? If so, how should this be coded?