Athscl native arteries of left leg w ulceration of thigh

This code signifies the presence of atherosclerosis affecting the original, non-grafted arteries of the left leg, specifically complicated by an open sore or lesion located on the thigh. It indicates a localized manifestation of peripheral artery disease (PAD) with tissue breakdown.

Apply this code when documentation explicitly states atherosclerosis of the native arteries of the left leg and identifies an ulcer on the thigh as a direct complication. This typically occurs in patients with advanced PAD experiencing ischemic tissue damage. Documentation should clearly specify the laterality (left leg) and the precise location of the ulcer (thigh).

• Ensure the documentation specifies "native arteries" and not a bypass graft.
• Verify the laterality (left leg) and the exact ulcer location (thigh) are clearly stated.
• Do not use this code if the ulcer is on a different part of the left leg (e.g., calf, ankle, foot); specific codes exist for those locations.