ICD-10 Code I70 – Atherosclerosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70 – Atherosclerosis
What it is
I70 identifies atherosclerosis, a condition where plaque builds up in arterial walls and narrows blood flow. Use it when the record documents atherosclerotic disease without a more specific site or complication.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include reduced arterial perfusion, diminished pulses, or ischemic symptoms in the affected vascular territory.
When to use this code
Use I70 when the provider documents atherosclerosis and does not specify a more detailed code. It may also apply when the note describes generalized atherosclerotic disease without naming the vessel or complication. Check documentation for site-specific or complication-specific options before assigning this code.
Do not use for
Do not use I70 for arteriosclerosis obliterans or other conditions that have a more specific ICD-10-CM code. Avoid it when the record supports a different vascular disorder or a more precise atherosclerosis code.
Coding tip
Look for the affected vessel and any related complications first; if the documentation is nonspecific, I70 is the fallback code.