Jim Collins, CPC, ACS-CA, CHHC, CEO of Cardiology Coalition in Matthews, N.C., is quoted as saying that you can use 75635 (Computed tomographic angiography, abdominal aorta and bilateral iliofemoral lower extremity runoff, radiological supervision and interpretation, without contrast material[s], followed by contrast material[s] and further sections, including image post-processing) to report abdominal angiogram with runoff. This code is, rather, specific to a CT study with and without contrast. Collins actually said that you should use 75630 (Aortography, abdominal plus bilateral iliofemoral lower extremity, catheter, by serialography, radiological supervision and interpretation).