ICD-10 Code I70.412 – Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, left leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.412 – Atherosclerosis of autologous vein bypass graft(s) of the extremities with intermittent claudication, left leg
What it is
This code identifies atherosclerotic narrowing in an autologous vein bypass graft in the left leg, causing intermittent claudication. Use it when the graft itself is documented as diseased, not the native artery.
Clinical signs
Typical findings include exertional leg pain or cramping that improves with rest, along with documentation of peripheral arterial disease in the bypass graft. Clinical features vary; refer to documentation.
When to use this code
Use I70.412 when the provider documents atherosclerosis affecting an autologous vein bypass graft in the left lower extremity and specifies intermittent claudication. The laterality must be left leg. Confirm the graft type and that the diagnosis applies to the bypass graft, not the native vessel.
Do not use for
Do not use this code if the graft type is not autologous vein, if the affected leg is not left, or if claudication is not documented. Check documentation when the record only states peripheral vascular disease or graft occlusion without atherosclerosis.
Coding tip
Verify three elements in the note: autologous vein graft, left leg, and intermittent claudication.