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My question is in regards to an AV fistula resection or excision .. The patient presented with a hemorrhage at the AV fistula access site. He was taken to the OR. The ulcer site was opened. The fistula was mobilized both proximally and distally to the site of the perforation. Clamps were applied proximally and distally. The doctor excised the ulcerated segment of the fistula, then mobilization of the arterial end allowed for an end-to-end anastomosis between the arterial end and the venous end of the fistula. Would this just be a revision of an AV fistula (36832) or is this more in depth? I am struggling with finding a code that fits this procedure.