Oth athscl unsp type bypass of the extrm, bilateral legs

This code signifies the presence of atherosclerosis affecting bypass grafts in both lower extremities, where the specific type of atherosclerosis is not documented. It indicates a hardening and narrowing of these surgically implanted vessels, impairing blood flow to the legs. This condition can lead to symptoms of peripheral artery disease, such as claudication or critical limb ischemia.

Apply this code when documentation clearly states atherosclerosis of bypass grafts in both legs, but the physician does not specify the type of atherosclerosis (e.g., native vessel, in situ vein, or synthetic graft). This code is appropriate for patients with bilateral lower extremity bypass grafts experiencing atherosclerotic changes. Supporting documentation should include operative reports detailing the bypass procedure and physician notes confirming the diagnosis of atherosclerosis in these grafts.

• Ensure documentation specifies "bilateral legs" and "bypass graft(s)" to justify this code.
• Do not use this code if the type of bypass graft (e.g., femoropopliteal, aortobifemoral) or the specific type of atherosclerosis is documented; more specific codes exist.
• Consider sequencing this code after any codes for the underlying peripheral artery disease or other related conditions, if applicable.