ICD-10 Code I70.8 – Atherosclerosis of other arteries (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.8 – Atherosclerosis of other arteries
What it is
I70.8 identifies atherosclerotic narrowing or hardening in arteries other than the coronary, cerebral, or peripheral leg vessels specifically named elsewhere. Use it when documentation names an affected artery category that is not separately classified.
Clinical signs
Clinical features vary; refer to documentation. You may see reduced blood flow, ischemic symptoms, diminished pulses, or imaging evidence of plaque in the involved artery.
When to use this code
Use I70.8 when the provider documents atherosclerosis in an artery that does not fit a more specific ICD-10 category. It is appropriate when the record identifies the vessel group but does not name a more precise site. If laterality, occlusion, or another specific vascular disorder is documented, code the more specific diagnosis instead.
Do not use for
Do not use this code for coronary atherosclerosis, cerebral atherosclerosis, or atherosclerosis of the extremities when a more specific code applies. Check documentation if the artery site is unclear.
Coding tip
Review imaging and provider notes for the exact artery involved before assigning I70.8.