Athscl autol vein bypass of r leg w ulcer oth prt low leg

This code signifies the presence of atherosclerosis affecting a vein graft that was surgically implanted to bypass an obstructed artery in the right leg. The condition is complicated by the development of an ulcer on a part of the lower right leg, excluding the ankle or foot. This indicates a significant progression of peripheral artery disease in the context of a prior revascularization procedure.

Use this code when documentation clearly states atherosclerosis within an autologous vein bypass graft in the right leg, specifically with an ulcer located on the lower leg (e.g., calf, shin). This typically applies to patients with a history of peripheral bypass surgery who are now presenting with graft failure due to atherosclerotic changes and subsequent skin breakdown. Supporting documentation should include operative reports detailing the bypass graft, imaging confirming graft atherosclerosis, and wound care notes describing the ulcer's location.

• Ensure the documentation specifies "autologous vein" bypass graft, not synthetic or other types.
• Verify the ulcer location is on the "other part of lower leg" and not the ankle or foot, which have distinct codes.
• Consider sequencing this code after any underlying systemic conditions contributing to the atherosclerosis, if applicable.