Athscl nonbiol bypass of the extrm w gangrene, right leg

This code signifies the presence of atherosclerosis affecting a nonbiological (synthetic) bypass graft in the right leg, which has progressed to the point of gangrene. This indicates severe arterial insufficiency and tissue necrosis distal to the occluded or stenosed graft.

Use this code when documentation clearly states atherosclerosis of a synthetic bypass graft in the right lower extremity, accompanied by gangrenous changes. This typically occurs in patients with advanced peripheral artery disease who have undergone prior revascularization with a synthetic graft. Supporting documentation would include operative reports, vascular studies, and physician notes detailing the graft material, location, and presence of gangrene.

• Ensure the documentation specifies a nonbiological (synthetic) graft and not an autogenous vein graft.
• Verify the laterality is explicitly documented as the "right leg."
• Confirm the presence of gangrene; do not use this code for atherosclerosis without gangrene.