Ask Dr. Z

When coding angioplasty/stent in peripheral and central segments of AV, are codes assigned for both segments if there is one long lesion starting at the cephalic arch and then into the subclavian vein? The cephalic vein is widely patent except for the cephalic arch. At the distal aspect of the cephalic arch, there was an 80% stenosis with that lesion crossing into the subclavian vein. If stent inserted at stenosis in cephalic arch and stent into subclavian vein, are codes 36903 and 36908 reported? We know the cephalic arch is peripheral, and we think codes are assigned per segment even if one lesion crosses both segments and would like confirmation.