ICD-10 Code I70.0 – Atherosclerosis of aorta (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.0 – Atherosclerosis of aorta
What it is
This code identifies atherosclerotic plaque in the aorta, the body’s main artery. It means the aortic wall has hardening and narrowing from cholesterol buildup.
Clinical signs
Clinical features vary; refer to documentation. Imaging may note aortic plaque, calcification, or mural atherosclerosis, and the finding may be incidental or associated with other vascular disease.
When to use this code
Use this code when the provider documents atherosclerosis of the aorta, including imaging-confirmed aortic plaque or calcified atheroma. Code it when the condition is diagnosed and relevant to the encounter. If the record only says “arteriosclerosis” without aortic location, check documentation.
Do not use for
Do not use it for generalized atherosclerosis without aortic involvement or for aneurysm alone. If the chart describes another vessel or an unclear vascular finding, check documentation.
Coding tip
Look for the exact vessel named in the report; I70.0 is specific to the aorta.