2026 ICD-10-CM Diagnosis Code G25.5Other chorea

ICD-10-CM Codes›G00–G99›G20-G26›G25

ICD-10-CM G25.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G25.5 is a billable ICD-10-CM diagnosis code for other chorea. 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
G25.5
Billable Status
Yes — Valid for Submission
Code Describes
Other chorea
Short Description
Other chorea
Same as the full description in the CMS dataset.
Parent Code
G25
Other extrapyramidal and movement disorders

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG20-G26Extrapyramidal and movement disorders
CategoryG25Other extrapyramidal and movement disorders
This CodeG25.5Other chorea

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Ballism
  • Benign hereditary chorea
  • Brain lung thyroid syndrome
  • Cerebellar ataxia associated with another disorder
  • Childhood-onset benign chorea with striatal involvement
  • Chorea
  • Chorea co-occurrent and due to dentatorubropallidoluysian degeneration
  • Chorea co-occurrent and due to Huntington disease-like condition
  • Chorea co-occurrent and due to Wilson disease
  • Chorea due to and following encephalitis
  • Chorea due to and following infective disorder
  • Chorea due to and following injury of head
  • Chorea due to and following ventriculoperitoneal shunt
  • Chorea due to antiphospholipid syndrome
  • Chorea due to ataxia telangiectasia syndrome
  • Chorea due to cerebral anoxia
  • Chorea due to cerebral injury due to birth trauma
  • Chorea due to chronic hepatocerebral degeneration
  • Chorea due to classical pantothenate kinase associated neurodegeneration
  • Chorea due to endocrine disorder
  • Chorea due to hereditary ataxia
  • Chorea due to heredodegenerative disorder
  • Chorea due to Huntington disease-like 1
  • Chorea due to Huntington disease-like 2
  • Chorea due to Huntington disease-like 3
  • Chorea due to hyperglycemia
  • Chorea due to hyponatremia
  • Chorea due to hypoparathyroidism
  • Chorea due to immunoglobulin A vasculitis
  • Chorea due to immunological disorder
  • Chorea due to inborn error of metabolism
  • Chorea due to inherited aminoaciduria
  • Chorea due to inherited organic acidemia
  • Chorea due to injury of head
  • Chorea due to Lesch-Nyhan syndrome
  • Chorea due to metabolic disorder
  • Chorea due to mitochondrial cytopathy
  • Chorea due to neuroferritinopathy
  • Chorea due to paraneoplastic syndrome
  • Chorea due to polycythemia rubra vera
  • Chorea due to prion disease
  • Chorea due to systemic lupus erythematosus
  • Chorea due to thyrotoxicosis
  • Chorea due to widespread metastatic malignant neoplastic disease
  • Chorea following injury
  • Chorea gravidarum
  • Choreoacanthocytosis
  • Choreoathetosis
  • Chronic progressive non-hereditary chorea
  • Dentatorubropallidoluysian degeneration
  • Disorder of copper metabolism
  • Disorder of liver due to disorder of mineral metabolism
  • Dissociative neurological symptom disorder co-occurrent with chorea
  • Dubini's chorea
  • Early-onset neurodegeneration, choreoathetoid movement, microcytic anemia due to IREB2 mutation
  • Electric chorea
  • Hemiballism
  • Hemichorea
  • Hemichorea due to brain abscess
  • Hemichorea due to cerebral arteriovenous malformation
  • Hemichorea due to cerebral hemorrhage
  • Hemichorea due to cerebral infarction
  • Hemichorea due to head injury
  • Hemichorea due to multiple sclerosis
  • Hemichorea due to neoplasm of brain
  • Huntington disease-like syndrome
  • ICCA syndrome
  • Infection causing chorea
  • Kinesiogenic choreoathetosis
  • Neurological disorder due to excess intake of micronutrients
  • Oral choreiform movement
  • Paroxysmal choreoathetosis
  • Paroxysmal dystonia
  • Paroxysmal dystonic choreoathetosis with episodic ataxia and spasticity
  • Paroxysmal kinesigenic dyskinesia
  • Post-hemiplegic chorea
  • Progressive chorea
  • Toxic chorea
  • Wilson's disease

Tabular List NotesGuidance

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

Inclusion Terms

  • Chorea NOS

Type 1 Excludes

  • chorea NOS with heart involvement I02.0
  • Huntington's chorea G10
  • rheumatic chorea I02
  • Sydenham's chorea I02

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.

    • Chorea(chronic) (gravis) (posthemiplegic) (senile) (spasmodic)
    • Chorea(chronic) (gravis) (posthemiplegic) (senile) (spasmodic)
      • progressive
    • Chorea(chronic) (gravis) (posthemiplegic) (senile) (spasmodic)
      • Sydenham's
        • nonrheumatic
    • Choreoathetosis(paroxysmal)
    • Hemiballism(us)
    • Hemichorea

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

  • Chorea

    involuntary, forcible, rapid, jerky movements that may be subtle or become confluent, markedly altering normal patterns of movement. hypotonia and pendular reflexes are often associated. conditions which feature recurrent or persistent episodes of chorea as a primary manifestation of disease are referred to as choreatic disorders. chorea is also a frequent manifestation of basal ganglia diseases.

  • Chorea Gravidarum

    a rare movement disorder developed during pregnancy, characterized by involuntary jerky motion (chorea) and inability to maintain stable position of body parts (athetosis). rheumatic fever and collagen vascular disorders are frequently associated with this disease. chorea may vary from mild to severe and occurs in approximately 1 per 2,000 to 3,000 pregnancies. (from md med j 1997 sep;46(8):436-9)

  • Huntington Disease

    a familial disorder inherited as an autosomal dominant trait and characterized by the onset of progressive chorea and dementia in the fourth or fifth decade of life. common initial manifestations include paranoia; poor impulse control; depression; hallucinations; and delusions. eventually intellectual impairment; loss of fine motor control; athetosis; and diffuse chorea involving axial and limb musculature develops, leading to a vegetative state within 10-15 years of disease onset. the juvenile variant has a more fulminant course including seizures; ataxia; dementia; and chorea. (from adams et al., principles of neurology, 6th ed, pp1060-4)

  • Myokymia

    successive and rapid contractions of motor units associated with chronic nerve injury. the discharges arise from the peripheral aspects of regenerating nerves, and clinically impart a nearly continuous undulation of the body surface overlying the muscle. (adams et al., principles of neurology, 6th ed, p1491)

  • Neuroacanthocytosis

    an inherited autosomal disorder that is characterized by neurodegeneration; orofacial and buccal dyskinesias; chorea; and thorny-looking red cells (acanthocytes). this disorder is due to mutations of chorein which is important in protein trafficking and is encoded by vps13a on chromosome 9q21.

  • Tics

    habitual, repeated, rapid contraction of certain muscles, resulting in stereotyped individualized actions that can be voluntarily suppressed for only brief periods. they often involve the face, vocal cords, neck, and less often the extremities. examples include repetitive throat clearing, vocalizations, sniffing, pursing the lips, and excessive blinking. tics tend to be aggravated by emotional stress. when frequent they may interfere with speech and interpersonal relations. conditions which feature frequent and prominent tics as a primary manifestation of disease are referred to as tic disorders. (from adams et al., principles of neurology, 6th ed, pp109-10)

  • Chorea

    a neurological condition affecting the involuntary movements. it is characterized by brief, non-repetitive irregular muscle contractions. it is seen in patients with huntington's disease.

  • Choreoathetosis|Choreathetosis

    abnormal movement characterized by involuntary jerking and writhing affecting the limbs, trunk, and facial muscles.

  • Drug-Induced Chorea|Drug-induced chorea

    evidence of drug-induced chorea.

  • Huntington's Disease|HD|Huntington Disease|Huntington's Chorea|Huntington's disease

    a progressive hereditary neurodegenerative disorder inherited in an autosomal dominant fashion. symptoms may appear at any age and include uncontrolled movements, clumsiness, balance problems, difficulty walking, talking, or swallowing. the disease has a progressive course with a decline in mental abilities, and the development of psychiatric problems.

  • Other Chorea|Other chorea

    evidence of other chorea not specified elsewhere.

  • Rheumatic Chorea with Heart Involvement|Rheumatic chorea with heart involvement

    evidence of rheumatic chorea with heart involvement.

  • Sydenham Chorea|Chorea Minor|St. Vitus' Dance|Sydenham's chorea

    a neurologic disorder characterized by smooth involuntary, uncoordinated movements affecting especially the hands, feet, and face. (acc/aha)

  • UHDRS 1999 Version - Maximal Chorea: BOL|UHDR1-Maximal Chorea: BOL|UHDR1-Maximal Chorea: BOL|UHDR112B

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) maximal chorea-bol.

  • UHDRS 1999 Version - Maximal Chorea: Face|UHDR1-Maximal Chorea: Face|UHDR1-Maximal Chorea: Face|UHDR112A

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) maximal chorea-face.

  • UHDRS 1999 Version - Maximal Chorea: LLE|UHDR1-Maximal Chorea: LLE|UHDR1-Maximal Chorea: LLE|UHDR112G

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) maximal chorea-lle.

  • UHDRS 1999 Version - Maximal Chorea: LUE|UHDR1-Maximal Chorea: LUE|UHDR1-Maximal Chorea: LUE|UHDR112E

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) maximal chorea-lue.

  • UHDRS 1999 Version - Maximal Chorea: RLE|UHDR1-Maximal Chorea: RLE|UHDR1-Maximal Chorea: RLE|UHDR112F

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) maximal chorea-rle.

  • UHDRS 1999 Version - Maximal Chorea: RUE|UHDR1-Maximal Chorea: RUE|UHDR1-Maximal Chorea: RUE|UHDR112D

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) maximal chorea-rue.

  • UHDRS 1999 Version - Maximal Chorea: Trunk|UHDR1-Maximal Chorea: Trunk|UHDR1-Maximal Chorea: Trunk|UHDR112C

    unified huntington's disease rating scale 1999 version (uhdrs 1999 version) maximal chorea-trunk.

Patient EducationClinical

Movement Disorders

Movement disorders are neurologic conditions that cause problems with movement, such as:

Read the full article at MedlinePlus

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

Convert G25.5 to ICD-9-CMHistory

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

ICD-9-CM
333.5 Chorea NEC
Approximate The match is approximate rather than exact.

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 G25.5Overview

Is G25.5 (Other extrapyramidal and movement disorders) a billable code?

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

What is the ICD-9 equivalent of G25.5?

Under the General Equivalence Mappings, other chorea converts to ICD-9-CM 333.5 (chorea NEC). The mapping is approximate, so confirm the match fits the documentation.

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.