ICD-10 Code I08.0 – Rheumatic disorders of both mitral and aortic valves (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I08.0 – Rheumatic disorders of both mitral and aortic valves
What it is
I08.0 identifies rheumatic heart disease affecting both the mitral and aortic valves. Use it when documentation shows chronic valve damage from rheumatic fever involving both valves.
Clinical signs
Findings may include murmurs, valve stenosis or regurgitation, and symptoms of reduced cardiac function. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states rheumatic involvement of both the mitral and aortic valves. It also fits when the provider documents combined rheumatic valvular disease without separating the two valves. Check documentation if the note only mentions one valve or another cause of valve disease.
Do not use for
Do not use I08.0 for nonrheumatic valve disease, isolated mitral disease, or isolated aortic disease. If the cause of the valve disorder is unclear, check documentation.
Coding tip
Assign I08.0 only when both valves are specifically documented as rheumatic in origin.