Unsp athscl nonaut bio bypass of the extremities, right leg

This code signifies the presence of atherosclerosis within a biological bypass graft that was not harvested from the patient's own body (e.g., a cadaveric or xenograft) located in the right leg. This hardening and narrowing of the graft lumen impairs blood flow to the lower extremity.

Use this code when documentation confirms atherosclerosis affecting a nonautologous biological bypass graft in the right leg, and the specific type of atherosclerosis (e.g., native artery, in situ, or other specified type) is not documented. This applies to patients experiencing symptoms of peripheral artery disease due to graft failure or stenosis.

• Ensure the documentation specifies "nonautologous biological bypass graft" and "right leg."
• Do not use this code if the graft is synthetic or autologous; separate codes exist for those scenarios.
• If the specific type of atherosclerosis is known (e.g., native artery, in situ), a more specific code should be chosen.