Unsp athscl unsp type bypass of the extrm, unsp extremity

This code signifies the presence of atherosclerosis affecting a bypass graft in an extremity, where the specific type of atherosclerosis, the type of bypass graft, and the affected extremity are all unknown or not documented. It indicates a hardening and narrowing of the arteries within a surgically implanted vessel designed to reroute blood flow in a limb.

Use this code when documentation confirms atherosclerosis in an extremity bypass graft, but lacks specificity regarding the nature of the atherosclerosis (e.g., native vessel, in situ vein, or other type), the type of bypass graft (e.g., femoropopliteal, aortofemoral), and the laterality of the affected extremity. This code is appropriate when the provider's notes state "atherosclerosis of extremity bypass graft" without further detail.

• Avoid using this code if the type of bypass graft (e.g., autologous vein, synthetic) or the specific extremity (e.g., right leg, left arm) is documented.
• Always query the provider for more specific information regarding the type of graft, the specific extremity, and the nature of the atherosclerosis to allow for a more precise code selection.
• Do not confuse this with atherosclerosis of native arteries of the extremities (I70.2- series) or atherosclerosis of coronary artery bypass grafts (I25.7- series).