2022 ICD-10-CM Diagnosis Code G10

Huntington's disease

    2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  • G10 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2022 edition of ICD-10-CM G10 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of G10 - other international versions of ICD-10 G10 may differ.
Applicable To
  • Huntington's chorea
  • Huntington's dementia
Code Also
Code Also Help
A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.
  • dementia in other diseases classified elsewhere without behavioral disturbance (
    ICD-10-CM Diagnosis Code F02.80

    Dementia in other diseases classified elsewhere without behavioral disturbance

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code Manifestation Code
    Applicable To
    • Dementia in other diseases classified elsewhere NOS
    • Major neurocognitive disorder in other diseases classified elsewhere
    F02.80
    )
The following code(s) above G10 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G10:
  • G00-G99
    2022 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the nervous system
Approximate Synonyms
  • Altered behavior in huntington's dementia
  • Dementia due to huntington chorea
  • Dementia due to huntington chorea with altered behavior
  • Dementia due to huntingtons disease
  • Dementia due to huntingtons disease w behavioral disturbance
  • Dementia from huntingtons chorea
  • Huntington's chorea
  • Huntingtons chorea
Clinical Information
  • 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)
  • 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.
  • Chronic progressive chorea and mental deterioration terminating in dementia; the age of onset usually is in the fourth decade of life.
  • Huntington's disease (hd) is an inherited disease that causes certain nerve cells in the brain to waste away. People are born with the defective gene, but symptoms usually don't appear until middle age. Early symptoms of hd may include uncontrolled movements, clumsiness or balance problems. Later, hd can take away the ability to walk, talk or swallow. Some people stop recognizing family members. Others are aware of their environment and are able to express emotions.if one of your parents has huntington's disease, you have a 50-50 chance of getting it. A blood test can tell if you have the hd gene and will develop the disease. Genetic counseling can help you weigh the risks and benefits of taking the test.there is no cure. Medicines can help manage some of the symptoms, but cannot slow down or stop the disease.
ICD-10-CM G10 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 056 Degenerative nervous system disorders with mcc
  • 057 Degenerative nervous system disorders without mcc

Convert G10 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
Code annotations containing back-references to G10:
  • Code First: F02
    ICD-10-CM Diagnosis Code F02

    Dementia in other diseases classified elsewhere

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Code First
    • the underlying physiological condition, such as:
    • Alzheimer's (G30.-)
    • cerebral lipidosis (E75.4)
    • Creutzfeldt-Jakob disease (A81.0-)
    • dementia with Lewy bodies (G31.83)
    • dementia with Parkinsonism (G31.83)
    • epilepsy and recurrent seizures (G40.-)
    • frontotemporal dementia (G31.09)
    • hepatolenticular degeneration (E83.0)
    • human immunodeficiency virus [HIV] disease (B20)
    • Huntington's disease (G10)
    • hypercalcemia (E83.52)
    • hypothyroidism, acquired (E00-E03.-)
    • intoxications (T36-T65)
    • Jakob-Creutzfeldt disease (A81.0-)
    • multiple sclerosis (G35)
    • neurosyphilis (A52.17)
    • niacin deficiency [pellagra] (E52)
    • Parkinson's disease (G20)
    • Pick's disease (G31.01)
    • polyarteritis nodosa (M30.0)
    • prion disease (A81.9)
    • systemic lupus erythematosus (M32.-)
    • traumatic brain injury (S06.-)
    • trypanosomiasis (B56.-, B57.-)
    • vitamin B deficiency (E53.8)
    Includes
    • Major neurocognitive disorder in other diseases classified elsewhere
    Type 2 Excludes
    • dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97)
    • vascular dementia (F01.5-)
  • Type 1 Excludes: G21
    , G25.5
    , I02
    ICD-10-CM Diagnosis Code G21

    Secondary parkinsonism

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • dementia with Parkinsonism (G31.83)
    • Huntington's disease (G10)
    • Shy-Drager syndrome (G90.3)
    • syphilitic Parkinsonism (A52.19)
    ICD-10-CM Diagnosis Code G25.5

    Other chorea

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Chorea NOS
    Type 1 Excludes
    • chorea NOS with heart involvement (I02.0)
    • Huntington's chorea (G10)
    • rheumatic chorea (I02.-)
    • Sydenham's chorea (I02.-)
    ICD-10-CM Diagnosis Code I02

    Rheumatic chorea

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Includes
    • Sydenham's chorea
    Type 1 Excludes
    • chorea NOS (G25.5)
    • Huntington's chorea (G10)

Diagnosis Index entries containing back-references to G10:
  • Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic) G25.5
    ICD-10-CM Diagnosis Code G25.5

    Other chorea

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Chorea NOS
    Type 1 Excludes
    • chorea NOS with heart involvement (I02.0)
    • Huntington's chorea (G10)
    • rheumatic chorea (I02.-)
    • Sydenham's chorea (I02.-)
    • progressive G25.5
      ICD-10-CM Diagnosis Code G25.5

      Other chorea

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Chorea NOS
      Type 1 Excludes
      • chorea NOS with heart involvement (I02.0)
      • Huntington's chorea (G10)
      • rheumatic chorea (I02.-)
      • Sydenham's chorea (I02.-)
      • hereditary G10
    • hereditary G10
    • Huntington's G10
  • Dementia (degenerative (primary)) (old age) (persisting) F03.90
    ICD-10-CM Diagnosis Code F03.90

    Unspecified dementia without behavioral disturbance

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code Adult Dx (15-124 years)
    Applicable To
    • Dementia NOS
  • Disease, diseased - see also Syndrome
  • Huntington's disease or chorea G10

ICD-10-CM Codes Adjacent To G10
G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
G05.3 Encephalitis and encephalomyelitis in diseases classified elsewhere
G05.4 Myelitis in diseases classified elsewhere
G06 Intracranial and intraspinal abscess and granuloma
G06.0 Intracranial abscess and granuloma
G06.1 Intraspinal abscess and granuloma
G06.2 Extradural and subdural abscess, unspecified
G07 Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere
G08 Intracranial and intraspinal phlebitis and thrombophlebitis
G09 Sequelae of inflammatory diseases of central nervous system
G10 Huntington's disease
G11 Hereditary ataxia
G11.0 Congenital nonprogressive ataxia
G11.1 Early-onset cerebellar ataxia
G11.10 …… unspecified
G11.11 Friedreich ataxia
G11.19 Other early-onset cerebellar ataxia
G11.2 Late-onset cerebellar ataxia
G11.3 Cerebellar ataxia with defective DNA repair
G11.4 Hereditary spastic paraplegia
G11.8 Other hereditary ataxias

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.