ICD-10 Code I70.30 – Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.30 – Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities
What it is
This code identifies atherosclerotic narrowing or blockage in a bypass graft supplying an extremity, when the graft type is not specified. Use it when documentation confirms atherosclerosis but does not name the bypass conduit.
Clinical signs
Clinical features vary; refer to documentation. Findings may include reduced limb perfusion, diminished pulses, exertional leg pain, or ischemic symptoms related to graft compromise.
When to use this code
Use this code when the record states atherosclerosis affects an unspecified bypass graft in an arm or leg, and no more specific graft type is documented. It also fits follow-up notes that confirm graft disease without further detail. If the provider names the graft type, code more specifically.
Do not use for
Do not use it for native vessel peripheral arterial disease or for bypass graft disease in another body site. Check documentation if the note describes occlusion, thrombosis, or infection instead of atherosclerosis.
Coding tip
Confirm both the extremity location and that the graft is a bypass graft before assigning I70.30.