Ask Dr. Z

Hello Dr. Z, can you please advise on how you would code the following? Pt came in with left brachiocephalic fistula with a hx of cephalic arch stenosis with a stent and central innominate stenosis where previous innominate PTA was required from a femoral approach because the wire would not pass from the AVF. RFV was cannulated. Angio of SVC and RA were normal and L innominate vein was not seen due to complete occlusion. The L innominate vein was selectively catheterized from the SVC. Angio of the central veins revealed a 90-100% stenosis of the innominate vein. Central venous angioplasty was carried out with <10% residual. An attempt was then made to pass a wire into the cephalic arch from the subclavian which was unsuccessful due to the presence of occlusion at the junction of the stent in the cephalic arch with the subclavian vein. Therefore, decision was made to cannulate the AVF. Left upper brachiocephalic fistula was cannulated and an angiogram was performed that showed 90% stenosis in the stent in the cephalic arch vein extending into the subclavian. Venous angioplasty was carried out showing 10% residual stenosis. Would the following codes be correct since there are 2 separate accesses? 36011, 75827-59, 35476, 75978 36147, 35476-59, 75978-59 ...or would the 36147 need to be changed to 75791? Thanks - a little confused.