ICD-10 Code I70.91 – Generalized atherosclerosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.91 – Generalized atherosclerosis
What it is
I70.91 identifies atherosclerosis affecting multiple vessels without a more specific site being documented. Use it when the chart describes generalized arterial plaque or hardening rather than one named artery.
Clinical signs
Clinical features vary; refer to documentation. Common references describe diffuse arterial disease, often with reduced blood flow findings or evidence of widespread atherosclerotic change on imaging or exam.
When to use this code
Use this code when the provider documents generalized atherosclerosis, diffuse arteriosclerotic disease, or widespread plaque without specifying a particular vascular bed. It may also fit when the record notes atherosclerosis in multiple arteries but does not identify a dominant site. Check documentation if a more specific code is available.
Do not use for
Do not use I70.91 when the record clearly identifies coronary, carotid, peripheral, aortic, or other site-specific atherosclerosis. Also avoid it if the documentation only states risk factors or history without current disease.
Coding tip
Code the most specific vascular site first if the provider documents one; reserve I70.91 for truly generalized disease.