2020 ICD-10-CM Diagnosis Code G31.89

Other specified degenerative diseases of nervous system

    2016 2017 2018 2019 2020 Billable/Specific Code
  • G31.89 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM G31.89 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G31.89 - other international versions of ICD-10 G31.89 may differ.
The following code(s) above G31.89 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 G31.89:
  • G00-G99
    2020 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 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    Use Additional
    Other degenerative diseases of nervous system, not elsewhere classified
Approximate Synonyms
  • Corticostriatal spinal degeneration
ICD-10-CM G31.89 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 056 Degenerative nervous system disorders with mcc
  • 057 Degenerative nervous system disorders without mcc

Convert G31.89 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

Diagnosis Index entries containing back-references to G31.89:
  • Degeneration, degenerative
    • brain (cortical) (progressive) G31.9
      ICD-10-CM Diagnosis Code G31.9

      Degenerative disease of nervous system, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • childhood G31.9
        ICD-10-CM Diagnosis Code G31.9

        Degenerative disease of nervous system, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code
        • specified NEC G31.89
      • cystic G31.89
    • cortical (cerebellar) (parenchymatous) G31.89
    • nervous system G31.9
      ICD-10-CM Diagnosis Code G31.9

      Degenerative disease of nervous system, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • fatty G31.89
      • specified NEC G31.89
    • spinal (cord) G31.89
      • familial NEC G31.89
      • fatty G31.89
  • Dystrophy, dystrophia
    • infantile neuraxonal G31.89
  • Seitelberger's syndrome G31.89 (infantile neuraxonal dystrophy)
  • Syndrome - see also Disease
    • Seitelberger's G31.89

ICD-10-CM Codes Adjacent To G31.89
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
G36.0 Neuromyelitis optica [Devic]
G36.1 Acute and subacute hemorrhagic leukoencephalitis [Hurst]

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