Athscl autol vein bypass of extrm w intrmt claud, left leg

This code describes the hardening and narrowing of an autologous (patient's own) vein graft in the left leg, which was previously implanted to bypass an obstructed artery. This atherosclerosis is causing intermittent claudication, a symptom characterized by pain, cramping, or tiredness in the leg muscles during exercise that is relieved by rest.

Use this code when documentation confirms atherosclerosis affecting a vein bypass graft in the left lower extremity, specifically noting the presence of intermittent claudication. This typically applies to patients who have undergone prior bypass surgery using their own vein and are now experiencing symptomatic graft failure due to atherosclerotic changes. Supporting documentation should include operative reports detailing the bypass, imaging studies confirming graft atherosclerosis, and clinical notes describing claudication.

• Ensure the documentation specifies an autologous vein graft, not a synthetic or arterial graft, and clearly identifies the left leg.
• Confirm that intermittent claudication is explicitly documented as a symptom related to the graft atherosclerosis.
• Do not confuse with atherosclerosis of native arteries or other types of bypass grafts; specific codes exist for those conditions.