I35.0 — Nonrheumatic aortic (valve) stenosis

I35.0

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

What this code means

Aortic stenosis is narrowing of the aortic valve, obstructing blood flow out of the heart; here not rheumatic in origin.

Also called: aortic stenosis, aortic valve stenosis.

When this code is used

Used for nonrheumatic aortic (valve) stenosis.

Where it sits in ICD-10-CM

Code I35.0 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.

Related symptoms

Related anatomy

Heart Valves

Frequently asked questions

What is ICD-10-CM code I35.0?

I35.0 is the ICD-10-CM diagnosis code for “Nonrheumatic aortic (valve) stenosis”. Aortic stenosis is narrowing of the aortic valve, obstructing blood flow out of the heart; here not rheumatic in origin.

When is code I35.0 used?

Used for nonrheumatic aortic (valve) stenosis. 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.