Ask Dr. Z

Our vascular doc tried to place a carotid stent with DEP at the bifurcation of the common and internal carotid arteries. DEP was placed. Dissection occurred at the proximal carotid artery. He couldn't get past all the calcifications, so he angioplastied the bifurcation and placed a stent in the dissection. I'm not sure if the dissection occurred at the thoracic carotid or if it was considered cervical, just not at the bifurcation. (He's just calling it "proximal carotid".) What CPT codes would you report? Since he really didn't get the bifurcation stent in, can I report code 37215 since he did use the DEP and did place a carotid stent? Or am I at a stent and an angioplasty? What codes do you suggest?