ICD-10 Code I06.0 – Rheumatic aortic stenosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I06.0 – Rheumatic aortic stenosis
What it is
Rheumatic aortic stenosis is narrowing of the aortic valve caused by rheumatic heart disease. It reduces blood flow from the left ventricle into the aorta.
Clinical signs
Typical findings include a systolic ejection murmur, exertional dyspnea, chest pain, or syncope. Clinical features vary; refer to documentation.
When to use this code
Use I06.0 when the record specifically identifies aortic stenosis as rheumatic in origin. Apply it for confirmed rheumatic valve disease affecting the aortic valve, whether current or longstanding. Do not infer rheumatic cause from aortic stenosis alone.
Do not use for
Do not use this code for nonrheumatic or degenerative aortic stenosis. Check documentation if the etiology is unclear or if the note only states “aortic stenosis.”
Coding tip
Code the valve lesion only when the provider links the aortic stenosis to rheumatic disease in the documentation.