ICD-10 Code I70.592 – Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, left leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.592 – Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities, left leg
What it is
This code identifies atherosclerotic narrowing or blockage in a nonautologous biological bypass graft in the left leg. Use it when documentation specifies the graft is affected and the left lower extremity is the site.
Clinical signs
Clinical features vary; refer to documentation. Findings may include reduced graft flow, limb ischemia, claudication, or signs of graft dysfunction noted on imaging or vascular examination.
When to use this code
Use I70.592 when the provider documents atherosclerosis in a biological bypass graft of the left leg and does not describe another more specific atherosclerotic complication. Confirm that the graft is nonautologous and that the left leg is the involved extremity.
Choose this code only when the record clearly links the atherosclerotic process to the bypass graft itself. Check documentation if the note instead describes native artery disease, graft occlusion, or another vascular disorder.
Do not use for
Do not use this code for atherosclerosis of native leg arteries or for graft problems not documented as atherosclerotic. Check documentation when the condition is described as stenosis, thrombosis, or occlusion without atherosclerosis.
Coding tip
Verify the graft type and laterality in the operative or vascular note before assigning I70.592.