ICD-10 Code I08.9 – Rheumatic multiple valve disease, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I08.9 – Rheumatic multiple valve disease, unspecified
What it is
I08.9 identifies rheumatic disease affecting more than one heart valve, but the specific valves and severity are not documented. Use it when the record confirms rheumatic multivalvular involvement without further detail.
Clinical signs
Clinical features vary; refer to documentation. Findings may include murmurs, evidence of valve dysfunction, or a history of rheumatic fever with multiple affected valves.
When to use this code
Use I08.9 when the provider documents rheumatic disease of multiple valves and does not name the valves or specify the lesion. It also fits when the chart says rheumatic multivalvular disease, unspecified. Check documentation if the note instead identifies one valve or a nonrheumatic cause.
Do not use for
Do not use this code for isolated rheumatic disease of a single valve or for nonrheumatic valvular disorders. If the documentation specifies the valve or lesion type, code that more precise diagnosis instead.
Coding tip
Assign I08.9 only when the record clearly supports rheumatic involvement of multiple valves and no further valve detail is available.