Unsp athscl nonaut bio bypass of the extrm, bilateral legs

This code signifies the presence of atherosclerosis within a non-native biological bypass graft located in both lower extremities. This condition involves the hardening and narrowing of these grafted vessels due to plaque buildup, impairing blood flow to the legs. The specific type of atherosclerosis and the exact location within the graft are not specified.

Use this code when documentation indicates atherosclerosis affecting a biological bypass graft (e.g., saphenous vein graft from a cadaver) in both legs, and the specific type of atherosclerosis (e.g., native artery, in situ vein) is not detailed. This code is appropriate when the laterality is clearly bilateral, and the graft is explicitly stated as nonautologous biological.

• Ensure documentation specifies "nonautologous biological bypass graft" and "bilateral legs."
• Do not use if the graft is autologous (patient's own tissue); refer to codes for autologous bypass graft atherosclerosis.
• If the specific type of atherosclerosis within the graft (e.g., native artery, in situ vein) is known, a more specific code should be used.