Athscl type of bypass of left leg w ulcer oth prt low leg

This code signifies the hardening and narrowing of an existing bypass graft in the left leg, specifically affecting a graft type other than autologous vein or nonautologous biological, leading to ulcer formation on a part of the lower leg other than the ankle or heel. It indicates a complication of a prior revascularization procedure with subsequent tissue breakdown.

Use this code when documentation confirms atherosclerosis of a non-specified bypass graft in the left lower extremity, accompanied by an ulceration on the lower leg (e.g., shin, calf). The physician's notes must clearly specify the location of the ulcer and the type of graft if known, or lack thereof if "other type" is appropriate.

• Ensure the documentation specifies "atherosclerosis" of the graft, not just graft failure or occlusion.
• Verify the laterality (left leg) and the specific location of the ulceration on the lower leg.
• Do not use for ulcers of the ankle or heel; separate codes exist for those specific locations.