Athscl autol vein bypass of left leg w ulc of heel and midft

This code signifies the presence of atherosclerosis affecting a vein graft that was harvested from the patient's own body (autologous) and used to bypass an obstructed artery in the left leg. A critical component of this diagnosis is the development of an ulcer specifically located on the heel or midfoot of that same left leg, indicating severe peripheral arterial disease and compromised tissue perfusion.

Use this code when documentation clearly indicates atherosclerotic changes within an autologous vein bypass graft in the left leg, accompanied by an ulcer on the heel or midfoot. This typically occurs in patients with a history of peripheral bypass surgery who subsequently develop graft failure or stenosis leading to ischemic ulceration. Supporting documentation would include operative reports detailing the bypass, vascular studies confirming graft atherosclerosis, and wound care notes describing the heel/midfoot ulcer.

• Ensure the documentation specifies "autologous vein" graft, not synthetic or other types of grafts.
• Verify the laterality is explicitly "left leg" and the ulcer location is precisely "heel and midfoot."
• This code inherently includes the ulceration; do not code an additional ulcer code for the same site.