ICD-10 Code G25.4 – Drug-induced chorea (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G25.4 – Drug-induced chorea
What it is
G25.4 identifies chorea caused by a medication or other drug exposure. It refers to involuntary, irregular, dance-like movements that begin after a drug is started, changed, or misused.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include brief, unpredictable jerking movements that affect the face, trunk, or limbs and may interfere with speech or walking.
When to use this code
Use G25.4 when the provider documents chorea as drug-induced or links the movement disorder to a specific medication or toxic exposure. Code it when the record clearly supports a causal relationship rather than a nonspecific tremor or spasm. Check documentation if the cause is not stated.
Do not use for
Do not use this code for chorea with no drug cause documented, or for other involuntary movement disorders such as tremor, tics, or dystonia. If the etiology is uncertain, check documentation.
Coding tip
Look for explicit provider wording such as “drug-induced” or “due to medication” before assigning G25.4.