ICD-10 Code I65.23 – Occlusion and stenosis of bilateral carotid arteries (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I65.23 – Occlusion and stenosis of bilateral carotid arteries
What it is
I65.23 identifies narrowing or blockage of both carotid arteries in the neck. These vessels supply blood to the brain, so the code describes bilateral carotid artery disease.
Clinical signs
Clinical features vary; refer to documentation. Patients may have carotid bruit, transient neurologic symptoms, or be found on imaging with bilateral stenosis or occlusion.
When to use this code
Use this code when the provider documents occlusion or stenosis affecting both carotid arteries. It is appropriate when imaging or specialist assessment confirms bilateral disease, even if the patient is asymptomatic. Check documentation for laterality and severity details.
Do not use for
Do not use this code for unilateral carotid disease or for nonspecific cerebrovascular symptoms without documented carotid stenosis. If the record only states plaque or atherosclerosis without occlusion or stenosis, check documentation.
Coding tip
Confirm that both carotid arteries are involved before assigning I65.23.