Athscl nonaut bio bypass of extrm w intrmt claud, bi legs

This code signifies the presence of atherosclerosis affecting a non-native biological bypass graft in both lower extremities, leading to symptoms of intermittent claudication. This condition indicates a narrowing or hardening of the grafted vessel due to plaque buildup, impairing blood flow during exertion. The graft itself is derived from biological material but is not from the patient's own body (e.g., bovine or porcine graft).

Apply this code when documentation clearly states atherosclerosis within a nonautologous biological bypass graft in both legs, and the patient experiences intermittent claudication. This typically occurs in patients with a history of peripheral artery disease who have undergone bypass surgery using a xenograft or allograft. Supporting documentation should include operative reports detailing the graft type, imaging studies confirming atherosclerosis within the graft, and physician notes describing bilateral leg claudication.

• Ensure the documentation specifies "nonautologous biological" graft; do not use for synthetic grafts or autologous grafts.
• Verify that claudication is explicitly documented as "intermittent" and affects "bilateral legs."
• This code is highly specific; avoid using it if any of the described elements (graft type, location, or symptom) are not precisely met.