Athscl type of bypass of the extrm w gangrene, oth extremity

This code signifies the presence of atherosclerosis affecting a bypass graft in an extremity, excluding native arteries, which has progressed to gangrene. It specifically applies when the affected extremity is not the primary one being treated or documented. This condition indicates severe ischemic compromise of the limb due to graft failure.

Use this code when documentation clearly states atherosclerosis of a bypass graft in an extremity, complicated by gangrene, and specifies that it's an "other" or secondary extremity. This typically occurs in patients with a history of peripheral bypass surgery who develop critical limb ischemia. Supporting documentation includes physician notes detailing graft patency, presence of gangrene, and the specific extremity involved.

• Ensure documentation specifies "atherosclerosis" of the graft, not just graft occlusion or stenosis.
• Confirm the presence of gangrene; mere ulceration or necrosis without gangrene would lead to a different code.
• Distinguish between "other extremity" and the primary extremity being addressed, as specific codes exist for the latter.