Athscl autol vein bypass of the right leg w ulcer of thigh

This code signifies atherosclerosis affecting a vein graft that was surgically placed to bypass an occluded artery in the right leg, specifically when an ulcer has developed on the thigh as a complication. The vein graft, harvested from the patient's own body (autologous), has now developed plaque buildup, leading to compromised blood flow and subsequent tissue breakdown.

Apply this code when documentation clearly states atherosclerosis within an autologous vein bypass graft in the right leg, accompanied by an ulcer located on the thigh. This typically occurs in patients with a history of peripheral artery disease who have undergone bypass surgery and are now experiencing graft failure with skin breakdown.

• Ensure the documentation specifies "autologous vein" graft, not synthetic or other graft types.
• Verify the ulcer location is on the "thigh" of the right leg; ulcers on other parts of the leg would require a different code.
• Sequence this code as a primary diagnosis when the ulceration of the thigh due to the atherosclerotic graft is the main reason for the encounter.