ICD-10 Code I70.618 – Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.618 – Atherosclerosis of nonbiological bypass graft(s) of the extremities with intermittent claudication, other extremity
What it is
This code identifies atherosclerotic narrowing in a nonbiological bypass graft in an extremity, causing intermittent claudication in an unspecified other extremity. It reflects impaired blood flow through the graft, not native artery disease.
Clinical signs
Typical documentation includes exertional leg pain or cramping that improves with rest, along with known graft disease. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents atherosclerosis affecting a nonbiological bypass graft in an extremity and specifically notes intermittent claudication. It applies when the affected extremity is documented as other than the left or right lower leg categories used in more specific codes. Check documentation if laterality or graft type is unclear.
Do not use for
Do not use it for native artery atherosclerosis, graft occlusion without atherosclerotic disease, or claudication not linked to the bypass graft. If the graft is biological or the extremity is not documented, check documentation.
Coding tip
Confirm both graft type and the exact extremity documentation before assigning I70.618.