ICD-10 Code I09.89 – Other specified rheumatic heart diseases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I09.89 – Other specified rheumatic heart diseases
What it is
This code identifies rheumatic heart disease that does not fit a more specific listed category. Use it when documentation clearly states another specified rheumatic heart condition, but not mitral, aortic, or combined valve disease.
Clinical signs
Clinical features vary; refer to documentation. Findings may reflect chronic rheumatic valve damage, such as murmurs or evidence of prior rheumatic fever, but the record should specify the exact rheumatic heart condition.
When to use this code
Use I09.89 when the provider documents an “other specified” rheumatic heart disease and the condition is not described by a more precise rheumatic heart code. It is appropriate for coded diagnoses based on established rheumatic cardiac involvement. If the note is nonspecific, check documentation before assigning this code.
Do not use for
Do not use this code for unspecified rheumatic heart disease or for nonrheumatic valvular disorders. Also avoid it when the record supports a more specific rheumatic valve code.
Coding tip
Match the code to the provider’s exact wording and confirm there is no more specific rheumatic heart diagnosis documented.