2017/18 ICD-10-CM Diagnosis Code G31.84

Mild cognitive impairment, so stated

Applicable To
  • Mild neurocognitive disorder
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as G31.84. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • age related cognitive decline (
    ICD-10-CM Diagnosis Code R41.81

    Age-related cognitive decline

      2016 2017 2018 Billable/Specific Code Adult Dx (15-124 years)
    Applicable To
    • Senility NOS
    R41.81
    )
  • altered mental status (
    ICD-10-CM Diagnosis Code R41.82

    Altered mental status, unspecified

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Change in mental status NOS
    Type 1 Excludes
    • altered level of consciousness (R40.-)
    • altered mental status due to known condition - code to condition
    • delirium NOS (R41.0)
    R41.82
    )
  • cerebral degeneration (
    ICD-10-CM Diagnosis Code G31.9

    Degenerative disease of nervous system, unspecified

      2016 2017 2018 Billable/Specific Code
    G31.9
    )
  • change in mental status (
    ICD-10-CM Diagnosis Code R41.82

    Altered mental status, unspecified

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Change in mental status NOS
    Type 1 Excludes
    • altered level of consciousness (R40.-)
    • altered mental status due to known condition - code to condition
    • delirium NOS (R41.0)
    R41.82
    )
  • cognitive deficits following (sequelae of) cerebral hemorrhage or infarction (
    ICD-10-CM Diagnosis Code I69.01

    Cognitive deficits following nontraumatic subarachnoid hemorrhage

      2016 2017 - Deleted Code 2017 - New Code 2018 Non-Billable/Non-Specific Code
    I69.01-
    ,
    ICD-10-CM Diagnosis Code I69.11

    Cognitive deficits following nontraumatic intracerebral hemorrhage

      2016 2017 - Deleted Code 2017 - New Code 2018 Non-Billable/Non-Specific Code
    I69.11-
    ,
    ICD-10-CM Diagnosis Code I69.21

    Cognitive deficits following other nontraumatic intracranial hemorrhage

      2016 2017 - Deleted Code 2017 - New Code 2018 Non-Billable/Non-Specific Code
    I69.21-
    ,
    ICD-10-CM Diagnosis Code I69.31

    Cognitive deficits following cerebral infarction

      2016 2017 - Deleted Code 2017 - New Code 2018 Non-Billable/Non-Specific Code
    I69.31-
    ,
    ICD-10-CM Diagnosis Code I69.81

    Cognitive deficits following other cerebrovascular disease

      2016 2017 - Deleted Code 2017 - New Code 2018 Non-Billable/Non-Specific Code
    I69.81-
    ,
    ICD-10-CM Diagnosis Code I69.91

    Cognitive deficits following unspecified cerebrovascular disease

      2016 2017 - Deleted Code 2017 - New Code 2018 Non-Billable/Non-Specific Code
    I69.91-
    )
  • cognitive impairment due to intracranial or head injury (
    ICD-10-CM Diagnosis Code S06
    • S06.0 Concussion
    • S06.1 Traumatic cerebral edema
    • S06.2 Diffuse traumatic brain injury
    • S06.3 Focal traumatic brain injury
    • S06.4 Epidural hemorrhage
    • S06.5 Traumatic subdural hemorrhage
    • S06.6 Traumatic subarachnoid hemorrhage
    • S06.8 Other specified intracranial injuries
    • S06.9 Unspecified intracranial injury
    S06.-
    )
  • dementia (
    ICD-10-CM Diagnosis Code F01
    • F01 Vascular dementia
      • F01.5 Vascular dementia
        • F01.50 Vascular dementia without behavioral disturba...
        • F01.51 Vascular dementia with behavioral disturbance...
    F01.-
    ,
    ICD-10-CM Diagnosis Code F02
    • F02 Dementia in other diseases classified elsewhe...
      • F02.8 Dementia in other diseases classified elsewhe...
        • F02.80 Dementia in other diseases classified elsewhe...
        • F02.81 Dementia in other diseases classified elsewhe...
    F02.-
    ,
    ICD-10-CM Diagnosis Code F03

    Unspecified dementia

      2016 2017 2018 Non-Billable/Non-Specific Code
    Applicable To
    • Presenile dementia NOS
    • Presenile psychosis NOS
    • Primary degenerative dementia NOS
    • Senile dementia NOS
    • Senile dementia depressed or paranoid type
    • Senile psychosis NOS
    Type 1 Excludes
    Type 2 Excludes
    • mild memory disturbance due to known physiological condition (F06.8)
    • senile dementia with delirium or acute confusional state (F05)
    F03
    )
  • mild memory disturbance (
    ICD-10-CM Diagnosis Code F06.8

    Other specified mental disorders due to known physiological condition

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Epileptic psychosis NOS
    • Obsessive-compulsive and related disorder due to a known physiological condition
    • Organic dissociative disorder
    • Organic emotionally labile [asthenic] disorder
    F06.8
    )
  • neurologic neglect syndrome (
    ICD-10-CM Diagnosis Code R41.4

    Neurologic neglect syndrome

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Asomatognosia
    • Hemi-akinesia
    • Hemi-inattention
    • Hemispatial neglect
    • Left-sided neglect
    • Sensory neglect
    • Visuospatial neglect
    Type 1 Excludes
    R41.4
    )
  • personality change, nonpsychotic (
    ICD-10-CM Diagnosis Code F68.8

    Other specified disorders of adult personality and behavior

      2016 2017 2018 Billable/Specific Code
    F68.8
    )
The following code(s) above G31.84 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 G31.84:
  • G00-G99
    2018 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
  • G31
    ICD-10-CM Diagnosis Code G31

    Other degenerative diseases of nervous system, not elsewhere classified

      2016 2017 2018 Non-Billable/Non-Specific Code
    Type 2 Excludes
    Use Additional
    • code to identify:
    • dementia with behavioral disturbance (F02.81)
    • dementia without behavioral disturbance (F02.80)
    Other degenerative diseases of nervous system, not elsewhere classified
Approximate Synonyms ICD-10-CM G31.84 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert G31.84 to ICD-9-CM

Code History
Code annotations containing back-references to G31.84:

Diagnosis Index entries containing back-references to G31.84:

ICD-10-CM Codes Adjacent To G31.84
G31 Other degenerative diseases of nervous system, not elsewhere classified
G31.0 Frontotemporal dementia
G31.01 Pick's disease
G31.09 Other frontotemporal dementia
G31.1 Senile degeneration of brain, not elsewhere classified
G31.2 Degeneration of nervous system due to alcohol
G31.8 Other specified degenerative diseases of nervous system
G31.81 Alpers disease
G31.82 Leigh's disease
G31.83 Dementia with Lewy bodies
G31.84 Mild cognitive impairment, so stated
G31.85 Corticobasal degeneration
G31.89 Other specified degenerative diseases of nervous system
G31.9 Degenerative disease of nervous system, unspecified
G32 Other degenerative disorders of nervous system in diseases classified elsewhere
G32.0 Subacute combined degeneration of spinal cord in diseases classified elsewhere
G32.8 Other specified degenerative disorders of nervous system in diseases classified elsewhere
G32.81 Cerebellar ataxia in diseases classified elsewhere
G32.89 Other specified degenerative disorders of nervous system in diseases classified elsewhere
G35 Multiple sclerosis
G36 Other acute disseminated demyelination

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