1. ICD-10-CM Codes
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2. G00-G99 Diseases of the nervous system
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3. G10-G14 Systemic atrophies primarily affecting the central nervous system
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4. G10- Huntington's disease
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5. 2021 ICD-10-CM Diagnosis Code G10

2021 ICD-10-CM Diagnosis Code G10

Huntington's disease

2016 2017 2018 2019 2020 2021 Billable/Specific Code

• G10 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2021 edition of ICD-10-CM G10 became effective on October 1, 2020.
• This is the American ICD-10-CM version of G10 - other international versions of ICD-10 G10 may differ.

• 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

• 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.

• 056 Degenerative nervous system disorders with mcc
• 057 Degenerative nervous system disorders without mcc

Convert G10 to ICD-9-CM

• 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

• Code First: F02
  ICD-10-CM Diagnosis Code F02

  Dementia in other diseases classified elsewhere

  2016 2017 2018 2019 2020 2021 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 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 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 Non-Billable/Non-Specific Code

  Includes

  • Sydenham's chorea

  Type 1 Excludes

  • chorea NOS (G25.5)
  • Huntington's chorea (G10)

• Chorea (chronic) (gravis) (posthemiplegic) (senile) (spasmodic) G25.5
  ICD-10-CM Diagnosis Code G25.5

  Other chorea

  2016 2017 2018 2019 2020 2021 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 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 Billable/Specific Code Adult Dx (15-124 years)

  Applicable To

  • Dementia NOS
  • in (due to)
    • Huntington's disease or chorea G10
      • with behavioral disturbance G10
• Disease, diseased - see also Syndrome
  • Huntington's G10
    • with dementia G10
• Huntington's disease or chorea G10
  • with dementia G10
    • with behavioral disturbance G10

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