ICD-10 Code I70.518 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.518 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with intermittent claudication, other extremity
What it is
This code identifies atherosclerotic narrowing or blockage in a nonautologous biological bypass graft in an extremity, with intermittent claudication affecting an unspecified other limb. It reflects graft disease, not native artery disease.
Clinical signs
Typical findings include exertional leg pain that improves with rest, reduced walking tolerance, and evidence of impaired blood flow in the bypass graft. Clinical features vary; refer to documentation.
When to use this code
Use I70.518 when the record specifically documents atherosclerosis in a nonautologous biological bypass graft of an extremity and intermittent claudication. The affected limb is described as “other extremity,” not left or right. Confirm that the graft is biological and nonautologous.
Do not use for
Do not use this code for claudication without documented graft atherosclerosis, or for disease in a native artery. Check documentation if the graft type, limb laterality, or vascular site is unclear.
Coding tip
Verify the graft material and laterality in the operative or vascular note before assigning this code.