ICD-10 Code G24.9 – Dystonia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G24.9 – Dystonia, unspecified
What it is
G24.9 identifies dystonia when the record does not specify the type, cause, or body region. Dystonia is a movement disorder with sustained or intermittent muscle contractions that produce abnormal postures or twisting movements.
Clinical signs
Clinical features vary; refer to documentation. Common findings include involuntary muscle contractions, abnormal posturing, and repetitive twisting movements that may affect one area or the whole body.
When to use this code
Use G24.9 when the clinician documents dystonia but does not identify a more specific category, such as focal, generalized, or drug-induced dystonia. It also fits cases where the note confirms dystonia but the site or etiology is unclear. Check documentation before assigning a more specific code.
Do not use for
Do not use this code when the record clearly identifies a specific dystonia type or a secondary cause. If the diagnosis is better described by another movement disorder, code that condition instead.
Coding tip
If the documentation is nonspecific, G24.9 is appropriate; otherwise, code the documented dystonia subtype or cause.