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"For an area of infection in midpoint of AV fistula, incision was fashioned proximally over basilic vein and of distal basilic vein. The vein was dissected free. Once dissected free it was clamped proximally and distally at the arterial limb of basilic vein, divided, and oversewn with sutures. Then ligated the venous outflow tract to prevent back bleeding. Wound irrigated and closed in layers with sutures. Attention was turned to midpoint of fistula, where obvious infection was. An elliptical incision was fashioned and deepened down to the skin and subcutaneous tissue. The anterior wall of the fistula was completely resected involving the area of obvious infection. Was irrigated and sutured." Is this enough documentation to only use code 36832 as a fistula revision, or should this be reported with codes 37607 and 37799?