ICD-10 Code I70.602 – Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.602 – Unspecified atherosclerosis of nonbiological bypass graft(s) of the extremities, left leg
What it is
This code identifies atherosclerosis affecting a nonbiological bypass graft in the left leg. It means plaque has narrowed or blocked blood flow through the graft, but the documentation does not specify the graft site more precisely.
Clinical signs
Findings may include reduced limb perfusion, pain with walking, coolness, diminished pulses, or graft-related ischemic symptoms. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record documents atherosclerosis of a nonbiological bypass graft in the left leg and does not provide a more specific graft location. It is appropriate when the left-sided extremity is clearly identified but the graft details remain unspecified. Check documentation if the provider describes occlusion, stenosis, or another vascular disorder instead.
Do not use for
Do not use this code for native artery atherosclerosis, biological graft disease, or bypass graft problems in another limb. If the documentation is more specific, code the stated condition instead.
Coding tip
Verify both the graft type and laterality before assigning I70.602.