ICD-10 Code I70.318 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.318 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with intermittent claudication, other extremity
What it is
This code identifies atherosclerotic narrowing in an unspecified bypass graft in an extremity, with intermittent claudication affecting another extremity. Use it when the record documents graft disease and exertional leg pain from reduced blood flow.
Clinical signs
Typical findings include exertional leg pain that improves with rest, diminished pulses, or evidence of peripheral arterial insufficiency. Clinical features vary; refer to documentation for the affected graft and the “other extremity” involved.
When to use this code
Use I70.318 when the provider documents atherosclerosis in a bypass graft of an extremity and specifically links intermittent claudication to the other extremity. You should also confirm that the graft type is not specified. If the note identifies rest pain, ulceration, or gangrene, check whether a different code is required.
Do not use for
Do not use this code for native artery atherosclerosis without bypass graft involvement, or when claudication is not documented. Check documentation if the affected extremity or graft type is unclear.
Coding tip
Verify both the graft location and the “other extremity” wording before assigning I70.318.