ICD-10 Code I70.699 – Other atherosclerosis of nonbiological bypass graft(s) of the extremities, unspecified extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.699 – Other atherosclerosis of nonbiological bypass graft(s) of the extremities, unspecified extremity
What it is
This code identifies atherosclerosis affecting a nonbiological bypass graft in an extremity when the affected limb is not specified. Use it for graft-related arterial narrowing or blockage due to plaque buildup.
Clinical signs
Findings may include reduced limb perfusion, exertional pain, coolness, diminished pulses, or graft-related ischemic symptoms. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents atherosclerosis involving a synthetic or other nonbiological bypass graft in an arm or leg, but does not identify the extremity. It also fits follow-up notes that clearly state graft disease from atherosclerosis. If the record names the limb, code the specified extremity instead.
Do not use for
Do not use this code for native vessel atherosclerosis without graft involvement. Do not use it when the chart specifies an atherosclerotic graft disease code for a particular extremity or when documentation is unclear; check documentation.
Coding tip
Look for wording such as “nonbiological bypass graft” and confirm that the extremity is not specified before assigning I70.699.