ICD-10 Code I35.2 – Nonrheumatic aortic (valve) stenosis with insufficiency (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I35.2 – Nonrheumatic aortic (valve) stenosis with insufficiency
What it is
This code identifies a nonrheumatic aortic valve disorder with both narrowing and leakage. Use it when the documentation states aortic stenosis and aortic insufficiency, and the cause is not rheumatic.
Clinical signs
Clinical features may include findings of aortic valve obstruction and regurgitation on exam or imaging. Symptoms and severity vary; refer to documentation for confirmed valve dysfunction.
When to use this code
Use this code when the provider documents combined aortic stenosis and insufficiency without a rheumatic cause. It may be supported by echocardiogram or cardiology assessment showing both lesions. If the record only says “aortic valve disease,” check documentation before assigning this code.
Do not use for
Do not use it for rheumatic aortic valve disease or for isolated stenosis or isolated insufficiency. Check documentation if the cause, valve involved, or combined nature of the lesion is unclear.
Coding tip
Assign I35.2 only when both stenosis and insufficiency are documented for the aortic valve.