2020 ICD-10-CM Diagnosis Code G32.8

Other specified degenerative disorders of nervous system in diseases classified elsewhere

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • G32.8 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Oth degeneratv disord of nervous sys in dis classd elswhr
  • The 2020 edition of ICD-10-CM G32.8 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G32.8 - other international versions of ICD-10 G32.8 may differ.
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • underlying disease, such as:
  • amyloidosis cerebral degeneration (
    ICD-10-CM Diagnosis Code E85
    • E85 Amyloidosis
      • E85.0 Non-neuropathic heredofamilial amyloidosis
      • E85.1 Neuropathic heredofamilial amyloidosis
      • E85.2 Heredofamilial amyloidosis, unspecified
      • E85.3 Secondary systemic amyloidosis
      • E85.4 Organ-limited amyloidosis
      • E85.8 Other amyloidosis
        • E85.81 Light chain (AL) amyloidosis
        • E85.82 Wild-type transthyretin-related (ATTR) amyloi...
        • E85.89 Other amyloidosis
      • E85.9 Amyloidosis, unspecified
    E85.-
    )
  • cerebral degeneration (due to) hypothyroidism (
    ICD-10-CM Diagnosis Code E00.0

    Congenital iodine-deficiency syndrome, neurological type

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Endemic cretinism, neurological type
    E00.0-
    ICD-10-CM Diagnosis Code E03.9

    Hypothyroidism, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Myxedema NOS
    E03.9
    )
  • cerebral degeneration (due to) neoplasm (C00-D49
    ICD-10-CM Range C00-D49

    Neoplasms

    • C00-C14 Malignant neoplasms of lip, oral cavity ...
    • C15-C26 Malignant neoplasms of digestive organs
    • C30-C39 Malignant neoplasms of respiratory and i...
    • C40-C41 Malignant neoplasms of bone and articula...
    • C43-C44 Melanoma and other malignant neoplasms o...
    • C45-C49 Malignant neoplasms of mesothelial and s...
    • C50-C50 Malignant neoplasms of breast
    • C51-C58 Malignant neoplasms of female genital or...
    • C60-C63 Malignant neoplasms of male genital orga...
    • C64-C68 Malignant neoplasms of urinary tract
    • C69-C72 Malignant neoplasms of eye, brain and ot...
    • C73-C75 Malignant neoplasms of thyroid and other...
    • C76-C80 Malignant neoplasms of ill-defined, othe...
    • C7A-C7A Malignant neuroendocrine tumors
    • C7B-C7B Secondary neuroendocrine tumors
    • C81-C96 Malignant neoplasms of lymphoid, hematop...
    • D00-D09 In situ neoplasms
    • D10-D36 Benign neoplasms, except benign neuroend...
    • D37-D48 Neoplasms of uncertain behavior, polycyt...
    • D3A-D3A Benign neuroendocrine tumors
    • D49-D49 Neoplasms of unspecified behavior
    )
  • cerebral degeneration (due to) vitamin B deficiency, except thiamine (
    ICD-10-CM Diagnosis Code E52

    Niacin deficiency [pellagra]

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Niacin (-tryptophan) deficiency
    • Nicotinamide deficiency
    • Pellagra (alcoholic)
    Type 1 Excludes
    • sequelae of niacin deficiency (E64.8)
    E52
    -
    ICD-10-CM Diagnosis Code E53

    Deficiency of other B group vitamins

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • sequelae of vitamin B deficiency (E64.8)
    E53
    .-)
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 G32.8. 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.
  • superior hemorrhagic polioencephalitis [Wernicke's encephalopathy] (
    ICD-10-CM Diagnosis Code E51.2

    Wernicke's encephalopathy

      2016 2017 2018 2019 2020 Billable/Specific Code
    E51.2
    )
The following code(s) above G32.8 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 G32.8:
  • 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
Approximate Synonyms
  • Cerebral degeneration due to vitamin b12 deficiency
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
ICD-10-CM Codes Adjacent To G32.8
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]
G36.8 Other specified acute disseminated demyelination
G36.9 Acute disseminated demyelination, unspecified
G37 Other demyelinating diseases of central nervous system
G37.0 Diffuse sclerosis of central nervous system

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