ICD-10 Code G24.02 – Drug induced acute dystonia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G24.02 – Drug induced acute dystonia
What it is
G24.02 identifies acute dystonic reactions caused by a drug. It refers to involuntary muscle contractions that produce abnormal postures or twisting movements soon after exposure to a medication.
Clinical signs
Typical findings include sustained muscle spasms, neck turning, jaw tightening, tongue protrusion, or abnormal eye deviation. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record documents an acute dystonic reaction linked to a medication, such as a recently started or dose-changed drug. You should also use it when the provider clearly attributes the movement disorder to a drug exposure. Check documentation if the cause is uncertain.
Do not use for
Do not use G24.02 for chronic dystonia without a drug cause or for other extrapyramidal reactions that are documented separately. Do not use it when the chart does not support a medication-related cause.
Coding tip
Confirm the offending drug and the acute timing in the note before assigning G24.02.