Ask Dr. Z

Patient has a history of prior EVAR with new endoleak. Proximal extension was placed (34710), but they noticed the previously placed iliac limb was maldeployed, so they re-aligned the limb by placing a Medtronic Endurant II stent within the limb. Would this be 34711, even though it's not an extension, or would this be 37221? When closing they couldn't control the bleeding from the large arteriotomy in the left common femoral, so they incised over the left common femoral artery and extended down to the common femoral artery and found large calcified plaque. Localized endarterectomy was performed and then they repaired the artery with a suture, then closed the groin incision. I started with 34812, but since they needed to open it I'm wondering if 34713 would be more appropriate? Since the endarterectomy was localized I do not believe we can code for it; is this correct?