Athscl type of bypass of the extrm w intrmt claud, left leg

This code describes the hardening and narrowing of an existing bypass graft in the left leg, specifically when the patient experiences intermittent claudication. This condition indicates reduced blood flow through the grafted vessel, leading to pain or cramping during exercise that resolves with rest. The atherosclerosis is occurring within a graft that was previously implanted to bypass an occluded native artery.

Use this code when documentation clearly states atherosclerosis affecting a bypass graft in the left lower extremity, and the patient's primary symptom is intermittent claudication. This typically applies to patients with a history of peripheral artery disease who have undergone revascularization via bypass surgery. Supporting documentation should include physician notes detailing the graft's location, the presence of atherosclerosis, and the symptom of claudication.

• Ensure the documentation specifies "other type of bypass graft(s)" to differentiate from autologous vein or nonautologous biological grafts.
• Confirm the laterality is explicitly stated as "left leg" in the medical record.
• Do not use this code for atherosclerosis of native arteries or for complications of the graft other than atherosclerosis.