ICD-10 Code I70.308 – Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.308 – Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, other extremity
What it is
This code identifies atherosclerosis affecting an unspecified bypass graft in an extremity, specifically the other extremity. Use it when the graft site is documented but the type of bypass graft is not specified.
Clinical signs
Clinical features vary; refer to documentation. Commonly, providers describe reduced blood flow in the grafted limb, such as pain, coolness, diminished pulses, or impaired walking tolerance.
When to use this code
Use I70.308 when the record states atherosclerosis of a bypass graft in an extremity and identifies the site as the other extremity, but does not specify the graft type. It is appropriate when the diagnosis is confirmed by the clinician and no more detailed code is documented.
Do not use for
Do not use this code for native artery atherosclerosis, for a different extremity site, or when the bypass graft type is clearly specified and a more exact code applies. Check documentation.
Coding tip
Confirm both the graft location and the phrase “unspecified type” before assigning this code.