ICD-10 Code G24.4 – Idiopathic Orofacial Dystonia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G24.4 – Idiopathic orofacial dystonia
What it is
G24.4 identifies idiopathic orofacial dystonia, a movement disorder causing involuntary, sustained, or intermittent muscle contractions in the face, jaw, tongue, or mouth. “Idiopathic” means no specific cause has been documented.
Clinical signs
Typical findings include abnormal facial or jaw posturing, repetitive spasms, tongue movements, or difficulty speaking or chewing. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents idiopathic orofacial dystonia as the diagnosis. It is appropriate when the record describes involuntary movements of the orofacial muscles without a stated secondary cause. If the note names another dystonia type or an underlying disorder, code that instead.
Do not use for
Do not use this code for dystonia with a documented cause, such as medication-induced or neurologic disease-related dystonia. Check documentation if the chart only mentions facial spasm or jaw pain without a confirmed dystonia diagnosis.
Coding tip
Code only when the provider clearly documents idiopathic orofacial dystonia; otherwise, query or code the more specific documented condition.