Athscl autol vein bypass of extrm w intrmt claud, bi legs

This code signifies the hardening and narrowing of an autologous vein bypass graft in both legs, leading to symptoms of intermittent claudication. This condition indicates a failure or deterioration of a previously placed vein graft, typically used to bypass arterial blockages in the lower extremities, now causing pain and cramping during exercise.

Use this code when documentation explicitly states atherosclerosis affecting autologous vein bypass grafts in both legs, and the patient experiences intermittent claudication. This typically follows a history of peripheral artery disease (PAD) requiring bypass surgery, where the graft itself has now become diseased.

• Ensure documentation specifies "autologous vein" graft and not a synthetic graft or in-situ bypass.
• Verify that symptoms of intermittent claudication are present and attributed to the graft atherosclerosis.
• This code specifies "bilateral legs"; do not use for unilateral involvement or unspecified laterality.