QUESTION: A patient had an aneurysm at arteriovenous (AV) fistula, and the physician excluded the aneurysm between two clamps, ends oversewn, and excised the aneurysm. The physician used a tunneler to tunnel an 8 mm Flixine graft from the arterial to the venous side, and two end-to-side anastomoses were then performed at the vein and arterial end. Should we report code 39.42 (revision of AV shunt for renal dialysis) with code 38.63 (other excision of vessel), or code 38.43 (resection of vessel with replacement), or another code(s)?