2026 ICD-10-CM Diagnosis Code G24.4Idiopathic orofacial dystonia

ICD-10-CM Codes›G00–G99›G20-G26›G24

ICD-10-CM G24.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G24.4 is a billable ICD-10-CM diagnosis code for idiopathic orofacial dystonia. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other nervous system disorders (often hereditary or degenerative).

Code Identity

ICD-10-CM Code
G24.4
Billable Status
Yes — Valid for Submission
Code Describes
Idiopathic orofacial dystonia
Short Description
Idiopathic orofacial dystonia
Same as the full description in the CMS dataset.
Parent Code
G24
Dystonia

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG20-G26Extrapyramidal and movement disorders
CategoryG24Dystonia
This CodeG24.4Idiopathic orofacial dystonia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Absence of teeth
  • Cranial dystonia
  • Edentulous
  • Edentulous orofacial dystonia
  • Idiopathic orofacial dystonia
  • Infantile-onset generalized dyskinesia with orofacial involvement
  • Isolated oromandibular dystonia
  • Meige syndrome
  • Oral dyskinesia
  • Oral dystonia
  • Orofacial dyskinesia
  • Tooth absent

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Orofacial dyskinesia

Type 1 Excludes

  • drug induced orofacial dyskinesia G24.01

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Dyskinesia
      • orofacial (idiopathic)
    • Dystonia
      • idiopathic
        • orofacial
    • Dystonia
      • orofacial (idiopathic)
    • Dystonia
      • oromandibular
    • Syndrome
      • Meige

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS006
Other nervous system disorders (often hereditary or degenerative)
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Meige Syndrome

    a syndrome characterized by orofacial dystonia; including blepharospasm; forceful jaw opening; lip retraction; platysma muscle spasm; and tongue protrusion. it primarily affects older adults, with an incidence peak in the seventh decade of life. (from adams et al., principles of neurology, 6th ed, p108)

  • Carcinoma in Situ of Gingiva and Edentulous Alveolar Ridge|Carcinoma in situ of gingiva and edentulous alveolar ridge

    evidence of carcinoma in situ of the gingiva and edentulous alveolar ridge.

  • Edentulous

    having teeth in neither the mandible nor the maxilla.

  • Edentulous

    an indication that an individual lacks teeth/dentition.

Patient EducationClinical

Dystonia

Dystonia is a movement disorder that causes involuntary contractions of your muscles. These contractions result in twisting and repetitive movements. Sometimes they are painful.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert G24.4 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
333.82 Orofacial dyskinesia
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G24.4Overview

Is G24.4 (Dystonia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report idiopathic orofacial dystonia on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of G24.4?

Under the General Equivalence Mappings, idiopathic orofacial dystonia converts to ICD-9-CM 333.82 (orofacial dyskinesia). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.