1. ICD-10-CM Codes
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2. G00-G99
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3. G30-G32
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4. G31-
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5. 2023 ICD-10-CM Diagnosis Code G31.84

2023 ICD-10-CM Diagnosis Code G31.84

Mild cognitive impairment of uncertain or unknown etiology

2016 2017 2018 2019 2020 2021 2022 2023 - Revised Code Billable/Specific Code

• G31.84 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• ICD-10-CM G31.84 is a revised 2023 ICD-10-CM code that became effective on October 1, 2022.
• This is the American ICD-10-CM version of G31.84 - other international versions of ICD-10 G31.84 may differ.

• Cognitive impairment due to human immunodeficiency virus infection
• Hiv related cognitive impairment
• Mild cognitive impairment
• Mild cognitive impairment, so stated
• Mild neurocognitive disorder co-occurrent and due to alzheimer's disease
• Mild neurocognitive disorder co-occurrent and due to frontotemporal lobar degeneration
• Mild neurocognitive disorder co-occurrent and due to human immunodeficiency virus infection
• Mild neurocognitive disorder co-occurrent and due to huntington's disease
• Mild neurocognitive disorder co-occurrent and due to lewy body disease
• Mild neurocognitive disorder co-occurrent and due to multiple etiologies
• Mild neurocognitive disorder co-occurrent and due to parkinson's disease
• Mild neurocognitive disorder co-occurrent and due to prion disease
• Mild neurocognitive disorder co-occurrent and due to traumatic brain injury
• Mild neurocognitive disorder due to alzheimers disease
• Mild neurocognitive disorder due to frontotemporal lobar degeneration
• Mild neurocognitive disorder due to hiv infection
• Mild neurocognitive disorder due to huntingtons disease
• Mild neurocognitive disorder due to lewy body disease
• Mild neurocognitive disorder due to multiple etiologies
• Mild neurocognitive disorder due to parkinsons disease
• Mild neurocognitive disorder due to prion disease
• Mild neurocognitive disorder due to traumatic brain injury
• Minimal cognitive impairment

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

Convert G31.84 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
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): Revised code
  • New description: Mild cognitive impairment of uncertain or unknown etiology
  • 2022 description: Mild cognitive impairment, so stated

• Type 1 Excludes: R41
  , F06.7
  , F07.0
  ICD-10-CM Diagnosis Code R41

  Other symptoms and signs involving cognitive functions and awareness

  2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code

  Type 1 Excludes

  • dissociative [conversion] disorders (F44.-)
  • mild cognitive impairment, so stated (G31.84)
  ICD-10-CM Diagnosis Code F06.7

  Mild neurocognitive disorder due to known physiological condition

  2023 - New Code Non-Billable/Non-Specific Code

  Applicable To

  • Mild neurocognitive impairment due to a known physiological condition

  Code First

  • the underlying physiological condition, such as:
  • Alzheimer's disease (G30.-)
  • frontotemporal neurocognitive disorder (G31.09)
  • human immunodeficiency virus [HIV] disease (B20)
  • Huntington's disease (G10)
  • Neurocognitive disorder with Lewy bodies (G31.83)
  • Parkinson's disease (G20)
  • systemic lupus erythematosus (M32.-)
  • traumatic brain injury (S06.-)
  • vitamin B deficiency (E53-)

  Type 1 Excludes

  • age related cognitive decline (R41.81)
  • altered mental status (R41.82)
  • cerebral degeneration (G31.9)
  • change in mental status (R41.82)
  • cognitive deficits following (sequelae of) cerebral hemorrhage or infarction (I69.01-I69.11-, I69.21-I69.31-, I69.81- I69.91-)
  • dementia (F01.-, F02.-, F03)
  • mild cognitive impairment due to unknown or unspecified etiology (G31.84)
  • neurologic neglect syndrome (R41.4)
  • personality change, nonpsychotic (F68.8)
  ICD-10-CM Diagnosis Code F07.0

  Personality change due to known physiological condition

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

  Applicable To

  • Frontal lobe syndrome
  • Limbic epilepsy personality syndrome
  • Lobotomy syndrome
  • Organic personality disorder
  • Organic pseudopsychopathic personality
  • Organic pseudoretarded personality
  • Postleucotomy syndrome

  Type 1 Excludes

  • mild cognitive impairment (G31.84)
  • postconcussional syndrome (F07.81)
  • postencephalitic syndrome (F07.89)
  • signs and symptoms involving emotional state (R45.-)

  Type 2 Excludes

  • specific personality disorder (F60.-)

• Disorder (of) - see also Disease
  • mild neurocognitive G31.84
  • neurocognitive R41.9
    ICD-10-CM Diagnosis Code R41.9

    Unspecified symptoms and signs involving cognitive functions and awareness

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code

    Applicable To

    • Unspecified neurocognitive disorder
    • mild G31.84 (of uncertain or unknown etiology) - see also Disorder, mild neurocognitive
• Impaired, impairment (function)
  • mild cognitive G31.84
    • of uncertain or unknown etiology G31.84
  • cognitive, mild, of uncertain or unknown etiology G31.84

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