Ask Dr. Z

Patient with a femoral artery to femoral vein PTFE loop graft. Three separate PTAs are done - one of a stenosis at the venous anastomosis, one of a stenosis in the venous limb of the graft, and one of a stenosis in the apex of the graft. Vibahn stent is placed to the apex of the graft to cover multiple complex large pseudoaneurysms. I know that I can only code one angioplasty for what was done in the graft (35476, 75978), as this is considered one vessel. Now we have a stent placed in the graft and I need to report code 37238, which would include any angioplasty done in that vessel. So, I now need to drop codes 35476, 75978, correct? Am I figuring this out correctly, or am I way off base?