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

This code signifies the presence of atherosclerosis affecting a vein graft that was surgically implanted to bypass an occluded artery in the left leg. The condition is further complicated by the development of an ulcer specifically located on the thigh region of the left leg. This indicates a severe manifestation of peripheral artery disease in a previously revascularized limb.

Use this code when documentation clearly states atherosclerosis within an autologous vein bypass graft in the left leg, accompanied by an ulcer on the left thigh. This typically occurs in patients with a history of peripheral bypass surgery who are now presenting with graft failure and tissue breakdown. Documentation should specify the graft type (autologous vein), the affected limb (left leg), and the ulcer location (thigh).

• Ensure documentation specifies "autologous vein" graft; other graft types (e.g., nonautologous, arterial) would require different codes.
• Verify the exact location of the ulcer (thigh) as other ulcer locations on the left leg (e.g., calf, ankle, foot) have distinct codes.
• Consider sequencing this code after a primary diagnosis related to the underlying peripheral artery disease if applicable, or as the primary diagnosis if the graft complication is the focus of the encounter.