ICD-10 Code I02 – Rheumatic chorea (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I02 – Rheumatic chorea
What it is
I02 identifies rheumatic chorea, a neurologic manifestation of rheumatic fever. It involves involuntary, purposeless movements that occur after group A streptococcal infection.
Clinical signs
Typical findings include rapid, irregular movements, muscle weakness, and emotional lability. Clinical features vary; refer to documentation for evidence of rheumatic fever or associated cardiac findings.
When to use this code
Use I02 when the provider documents rheumatic chorea, Sydenham chorea, or chorea linked to rheumatic fever. Code it when the record clearly connects the movement disorder to a rheumatic cause. Check documentation if the etiology is uncertain.
Do not use for
Do not use this code for chorea from nonrheumatic neurologic, metabolic, or drug-related causes. If the chart does not support a rheumatic origin, code the documented condition instead.
Coding tip
Confirm the provider states rheumatic fever or rheumatic chorea, because choreiform movements alone are not enough for I02.