Athscl type of bypass of the extrm w intrmt claud, bi legs

This code describes the hardening and narrowing of an existing bypass graft in both legs, specifically when the patient experiences intermittent claudication (pain, cramping, or tiredness in the legs that occurs during exercise and is relieved by rest). This condition indicates a failure or complication of a previous revascularization procedure in the lower extremities.

Use this code when documentation confirms atherosclerosis affecting a bypass graft (e.g., saphenous vein graft, prosthetic graft) in both lower extremities, and the patient's primary symptom is intermittent claudication. Supporting documentation should include operative reports detailing the bypass procedure and physician notes describing the current atherosclerotic changes and claudication.

• Ensure documentation specifies "other type of bypass graft(s)" and not an autologous vein bypass graft, which has a separate code.
• Confirm the laterality is "bilateral legs" and not unilateral.
• Do not confuse with native artery atherosclerosis (I70.2- series) or bypass graft complications without atherosclerosis.