Encephalitis, myelitis and encephalomyelitis G04- >

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 G04. 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.
  • encephalopathy NOS (
    ICD-10-CM Diagnosis Code G93.40

    Encephalopathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    G93.40
    )
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (G04) and the excluded code together.
  • acute transverse myelitis (
    ICD-10-CM Diagnosis Code G37.3

    Acute transverse myelitis in demyelinating disease of central nervous system

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Acute transverse myelitis NOS
    • Acute transverse myelopathy
    Type 1 Excludes
    • multiple sclerosis (G35)
    • neuromyelitis optica [Devic] (G36.0)
    G37.3-
    )
  • alcoholic encephalopathy (
    ICD-10-CM Diagnosis Code G31.2

    Degeneration of nervous system due to alcohol

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Alcoholic cerebellar ataxia
    • Alcoholic cerebellar degeneration
    • Alcoholic cerebral degeneration
    • Alcoholic encephalopathy
    • Dysfunction of the autonomic nervous system due to alcohol
    Code Also
    • associated alcoholism (F10.-)
    G31.2
    )
  • benign myalgic encephalomyelitis (
    ICD-10-CM Diagnosis Code G93.3

    Postviral fatigue syndrome

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Benign myalgic encephalomyelitis
    Type 1 Excludes
    • chronic fatigue syndrome NOS (R53.82)
    G93.3
    )
  • multiple sclerosis (
    ICD-10-CM Diagnosis Code G35

    Multiple sclerosis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Disseminated multiple sclerosis
    • Generalized multiple sclerosis
    • Multiple sclerosis NOS
    • Multiple sclerosis of brain stem
    • Multiple sclerosis of cord
    G35
    )
  • subacute necrotizing myelitis (
    ICD-10-CM Diagnosis Code G37.4

    Subacute necrotizing myelitis of central nervous system

      2016 2017 2018 2019 2020 Billable/Specific Code
    G37.4
    )
  • toxic encephalitis (
    ICD-10-CM Diagnosis Code G92

    Toxic encephalopathy

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Toxic encephalitis
    • Toxic metabolic encephalopathy
    Code First
    • , if applicable, drug induced (T36-T50)
    • (T51-T65) to identify toxic agent
    G92
    )
  • toxic encephalopathy (
    ICD-10-CM Diagnosis Code G92

    Toxic encephalopathy

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Toxic encephalitis
    • Toxic metabolic encephalopathy
    Code First
    • , if applicable, drug induced (T36-T50)
    • (T51-T65) to identify toxic agent
    G92
    )
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • acute ascending myelitis
  • meningoencephalitis
  • meningomyelitis
Clinical Information
  • An inflammatory process involving the brain (encephalitis) and meninges (meningitis), most often produced by pathogenic organisms which invade the central nervous system, and occasionally by toxins, autoimmune disorders, and other conditions.
Codes
  • G04 Encephalitis, myelitis and encephalomyelitis
    • G04.0 Acute disseminated encephalitis and encephalomyelitis (ADEM)
      • G04.00 Acute disseminated encephalitis and encephalomyelitis, unspecified
      • G04.01 Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)
      • G04.02 Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis
    • G04.1 Tropical spastic paraplegia
    • G04.2 Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
    • G04.3 Acute necrotizing hemorrhagic encephalopathy
      • G04.30 …… unspecified
      • G04.31 Postinfectious acute necrotizing hemorrhagic encephalopathy
      • G04.32 Postimmunization acute necrotizing hemorrhagic encephalopathy
      • G04.39 Other acute necrotizing hemorrhagic encephalopathy
    • G04.8 Other encephalitis, myelitis and encephalomyelitis
      • G04.81 Other encephalitis and encephalomyelitis
      • G04.89 Other myelitis
    • G04.9 Encephalitis, myelitis and encephalomyelitis, unspecified
      • G04.90 Encephalitis and encephalomyelitis, unspecified
      • G04.91 Myelitis, unspecified