ICD-10 Code I72.0 – Aneurysm of carotid artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I72.0 – Aneurysm of carotid artery
What it is
I72.0 identifies an aneurysm involving the carotid artery, meaning an abnormal focal dilation of that vessel. Use it when the record clearly documents a carotid artery aneurysm, whether found incidentally or during evaluation.
Clinical signs
Clinical features vary; refer to documentation. Patients may be asymptomatic, or imaging may show a dilated carotid segment, sometimes with associated pulsatile neck mass, bruit, or neurologic findings if complications occur.
When to use this code
Use this code when the provider documents aneurysm of the carotid artery on imaging, operative, or specialist notes. It also fits follow-up visits for a known carotid aneurysm when the condition remains active and is part of the assessment. If the chart only mentions carotid disease without aneurysm, check documentation.
Do not use for
Do not use I72.0 for carotid stenosis, occlusion, dissection, or generalized atherosclerosis unless an aneurysm is specifically documented. If the vessel involved is not the carotid artery, select the more accurate site-specific code.
Coding tip
Confirm the exact artery and laterality details in the report, and code the aneurysm only when the provider clearly states it.