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

This code signifies atherosclerosis affecting bypass grafts in both lower extremities, leading to symptoms of intermittent claudication. It indicates a narrowing or hardening of these grafted blood vessels, causing pain or cramping in the legs during exercise that resolves with rest. The specific type of bypass graft is not identified.

Apply this code when documentation confirms bilateral lower extremity bypass graft atherosclerosis causing intermittent claudication, and the type of graft (e.g., femoropopliteal, aortofemoral) is not specified. This typically occurs in patients with a history of peripheral artery disease who have undergone revascularization procedures.

• Ensure documentation explicitly states "bilateral legs" and "intermittent claudication."
• If the specific type of bypass graft is known, use a more specific code from the I70.3- series.
• Do not use if the atherosclerosis is in native arteries rather than bypass grafts.