Athscl unsp type bypass of left leg w ulc of heel and midft

This code signifies atherosclerosis affecting an unspecified type of bypass graft in the left leg, specifically complicated by ulceration located on the heel and midfoot. It indicates a chronic, progressive arterial disease impacting a previously surgically revascularized lower extremity, leading to tissue breakdown.

This code is appropriate when documentation confirms atherosclerotic changes within a left leg bypass graft, regardless of the graft material (e.g., saphenous vein, synthetic). Crucially, the patient must also present with an ulcer on the heel or midfoot of that same left leg, directly attributable to the graft's compromised patency.

• Ensure documentation specifies "left leg" and "heel and midfoot" ulceration.
• Verify the ulceration is a direct complication of the graft's atherosclerosis, not an independent etiology.
• Distinguish from ulcers due to other etiologies (e.g., venous stasis, pressure) or those affecting other foot regions.