ICD-10 Code I06 – Rheumatic aortic valve diseases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I06 – Rheumatic aortic valve diseases
What it is
I06 identifies rheumatic disease affecting the aortic valve, usually from prior rheumatic fever. It covers chronic valve damage such as narrowing, leakage, or both, when the cause is rheumatic.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include a heart murmur, dyspnea, fatigue, chest discomfort, or signs of heart failure, but the specific valve lesion should be documented.
When to use this code
Use I06 when the provider documents rheumatic aortic valve disease without a more specific subcategory, or when the record clearly states rheumatic involvement of the aortic valve. Code the documented valve lesion and any associated complications as directed by the record.
Do not use for
Do not use this code for nonrheumatic aortic valve disease or for isolated mitral valve disease. If the documentation does not confirm rheumatic etiology, check documentation before assigning I06.
Coding tip
Look for explicit wording such as “rheumatic aortic stenosis” or “rheumatic aortic insufficiency” to support I06.