ICD-10 Code I70.49 – Other atherosclerosis of autologous vein bypass graft(s) of the extremities (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.49 – Other atherosclerosis of autologous vein bypass graft(s) of the extremities
What it is
This code identifies atherosclerotic disease affecting an autologous vein bypass graft in an extremity. Use it when the graft itself has plaque-related narrowing or other atherosclerotic change.
Clinical signs
Clinical features vary; refer to documentation. You may see evidence of graft stenosis, reduced distal perfusion, or recurrent ischemic symptoms in the bypassed limb.
When to use this code
Use this code when the provider documents atherosclerosis involving an autologous vein bypass graft in an arm or leg. It fits postoperative patients with a vein graft whose disease is described as atherosclerotic rather than thrombotic or mechanical. If the note specifies another vascular graft type or a different vascular bed, check documentation.
Do not use for
Do not use this code for native artery atherosclerosis, graft occlusion without atherosclerosis, or disease in non-autologous grafts. If the record does not clearly identify the graft and atherosclerotic process, check documentation.
Coding tip
Confirm the graft is autologous vein and that the extremity location is documented before assigning I70.49.