1. ICD-10-CM Codes
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2. G00-G99 Diseases of the nervous system
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3. G30-G32 Other degenerative diseases of the nervous system
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4. G31- Other degenerative diseases of nervous system, not elsewhere classified
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2019 ICD-10-CM Diagnosis Code G31.83

Dementia with Lewy bodies

2016 2017 2018 2019 Billable/Specific Code

• G31.83 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2019 edition of ICD-10-CM G31.83 became effective on October 1, 2018.
• This is the American ICD-10-CM version of G31.83 - other international versions of ICD-10 G31.83 may differ.

• Dementia due to parkinson's disease
• Dementia due to parkinsons disease
• Diffuse lewy body disease
• Lewy body dementia
• Lewy body dementia with behavior disturbance
• Lewy body dementia with behavioral disturbance
• Lewy body dementia without behavioral disturbance
• Lewy body disease
• Senile dementia of the lewy body type

• A neurodegenerative disease characterized by dementia, mild parkinsonism, and fluctuations in attention and alertness. The neuropsychiatric manifestations tend to precede the onset of bradykinesia, muscle rigidity, and other extrapyramidal signs. Delusions and visual hallucinations are relatively frequent in this condition. Histologic examination reveals lewy bodies in the cerebral cortex and brain stem. Senile plaques and other pathologic features characteristic of alzheimer disease may also be present. (from neurology 1997;48:376-380; neurology 1996;47:1113-1124)
• A progressive form of dementia characterized by the presence of protein deposits called lewy bodies in the midbrain and cerebral cortex, and loss of cholinergic and dopaminergic neurons. The signs and symptoms overlap with alzheimer and parkinson disease.
• Lewy body disease is one of the most common causes of dementia in the elderly. Dementia is the loss of mental functions severe enough to affect normal activities and relationships. Lewy body disease happens when abnormal structures, called lewy bodies, build up in areas of the brain. The disease may cause a wide range of symptoms, including
  • changes in alertness and attention
  • hallucinations
  • problems with movement and posture
  • muscle stiffness
  • confusion
  • loss of memory
  lewy body disease can be hard to diagnose, because parkinson's disease and alzheimer's disease cause similar symptoms. Scientists think that lewy body disease might be related to these diseases, or that they sometimes happen together.lewy body disease usually begins between the ages of 50 and 85. The disease gets worse over time. There is no cure. Treatment focuses on drugs to help symptoms.
• Neurodegenerative disease marked by the presence of lewy body cells in the cerebral cortex and brain stem. Symptoms often include dementia, parkinsonianism, and striking fluctuations in cognitive performance.

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

Convert G31.83 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

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

  Dementia in other diseases classified elsewhere

  2016 2017 2018 2019 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-)
  ICD-10-CM Diagnosis Code F02

  Dementia in other diseases classified elsewhere

  2016 2017 2018 2019 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: G20
  , G21
  ICD-10-CM Diagnosis Code G20

  Parkinson's disease

  2016 2017 2018 2019 Billable/Specific Code

  Applicable To

  • Hemiparkinsonism
  • Idiopathic Parkinsonism or Parkinson's disease
  • Paralysis agitans
  • Parkinsonism or Parkinson's disease NOS
  • Primary Parkinsonism or Parkinson's disease

  Type 1 Excludes

  • dementia with Parkinsonism (G31.83)
  ICD-10-CM Diagnosis Code G21

  Secondary parkinsonism

  2016 2017 2018 2019 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)

• Dementia (degenerative (primary)) (old age) (persisting) F03.90
  ICD-10-CM Diagnosis Code F03.90

  Unspecified dementia without behavioral disturbance

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

  Applicable To

  • Dementia NOS
  • with
    • Lewy bodies G31.83
      • with behavioral disturbance G31.83
    • Parkinsonism G31.83
      • with behavioral disturbance G31.83
  • in (due to)
    • with behavioral disturbance G31.83
  • Lewy body G31.83
    • with behavioral disturbance G31.83
• Disease, diseased - see also Syndrome
  • Lewy body (dementia) G31.83
    • with behavioral disturbance G31.83
• Lewy body G31.83 (ies) (dementia) (disease)
• Parkinsonism (idiopathic) (primary) G20
  ICD-10-CM Diagnosis Code G20

  Parkinson's disease

  2016 2017 2018 2019 Billable/Specific Code

  Applicable To

  • Hemiparkinsonism
  • Idiopathic Parkinsonism or Parkinson's disease
  • Paralysis agitans
  • Parkinsonism or Parkinson's disease NOS
  • Primary Parkinsonism or Parkinson's disease

  Type 1 Excludes

  • dementia with Parkinsonism (G31.83)
  • dementia G31.83
    • with behavioral disturbance G31.83

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