I65.23 — Occlusion and stenosis of bilateral carotid arteries

I65.23

ICD-10 Chapter 9: Circulatory System — illustrative image — Chapter 9: Diseases of the circulatory system (I00–I99) — illustrative image

What this code means

Narrowing (stenosis) of both carotid arteries in the neck, usually from atherosclerosis, reducing blood flow to the brain.

Also called: bilateral carotid stenosis, carotid artery stenosis.

When this code is used

Used for occlusion and stenosis of bilateral carotid arteries.

Where it sits in ICD-10-CM

Code I65.23 belongs to Chapter 9: Diseases of the circulatory system, which covers codes I00–I99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Learn more about this condition

Condition guide: Stroke

Related anatomy

Brain

Frequently asked questions

What is ICD-10-CM code I65.23?

I65.23 is the ICD-10-CM diagnosis code for “Occlusion and stenosis of bilateral carotid arteries”. Narrowing (stenosis) of both carotid arteries in the neck, usually from atherosclerosis, reducing blood flow to the brain.

When is code I65.23 used?

Used for occlusion and stenosis of bilateral carotid arteries. It belongs to Chapter 9 of ICD-10-CM (Diseases of the circulatory system).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.