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"Patient presented with massively dilated brachiocephalic AVF with discomfort. The left upper extremity of the patient was prepped. A skin incision one centimeter above the cubital fossa was made and deepened into the subcutaneous fat using electrocautery. After careful isolation of the arterial inflow to the aneurysm, the vein was encircled with vessel loop for traction. The inflow was ligated with 1-0 ethibond transfixion suture. An elliptical incision was made over the aneurysm, the outflow was also ligated with 1-0 ethibond, and aneurysmal sac was opened and partially excised. Doppler signal of the brachial artery was verified after skin closure, and radial pulses were still palpable." Should I report codes 37607 and 36831? Or 36833?