1. 2023 ICD-10-CM Index
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2. 'E' Terms
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3. Index Terms Starting With 'E' (Encephalomyelitis)

Index Terms Starting With 'E' (Encephalomyelitis)

• Encephalomyelitis G04.90

  - see also Encephalitis

  ICD-10-CM Diagnosis Code G04.90

  Encephalitis and encephalomyelitis, unspecified

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

  Applicable To

  • Ventriculitis (cerebral) NOS

  • acute disseminated G04.00
    ICD-10-CM Diagnosis Code G04.00

    Acute disseminated encephalitis and encephalomyelitis, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • infectious G04.01
      ICD-10-CM Diagnosis Code G04.01

      Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)

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

      Type 1 Excludes

      • post chickenpox encephalitis (B01.1)
      • post measles encephalitis (B05.0)
      • post measles myelitis (B05.1)
    • noninfectious G04.81
      ICD-10-CM Diagnosis Code G04.81

      Other encephalitis and encephalomyelitis

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

      Applicable To

      • Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
    • postimmunization G04.02
      ICD-10-CM Diagnosis Code G04.02

      Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

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

      Applicable To

      • Encephalitis, post immunization
      • Encephalomyelitis, post immunization

      Use Additional

      • code to identify the vaccine (T50.A-, T50.B-, T50.Z-)
    • postinfectious G04.01
      ICD-10-CM Diagnosis Code G04.01

      Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)

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

      Type 1 Excludes

      • post chickenpox encephalitis (B01.1)
      • post measles encephalitis (B05.0)
      • post measles myelitis (B05.1)
  • acute necrotizing hemorrhagic G04.30
    ICD-10-CM Diagnosis Code G04.30

    Acute necrotizing hemorrhagic encephalopathy, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • postimmunization G04.32
      ICD-10-CM Diagnosis Code G04.32

      Postimmunization acute necrotizing hemorrhagic encephalopathy

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

      Use Additional

      • code to identify the vaccine (T50.A-, T50.B-, T50.Z-)
    • postinfectious G04.31
      ICD-10-CM Diagnosis Code G04.31

      Postinfectious acute necrotizing hemorrhagic encephalopathy

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • specified NEC G04.39
      ICD-10-CM Diagnosis Code G04.39

      Other acute necrotizing hemorrhagic encephalopathy

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

      Code Also

      • underlying etiology, if applicable
  • equine A83.9
    ICD-10-CM Diagnosis Code A83.9

    Mosquito-borne viral encephalitis, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • Eastern A83.2
      ICD-10-CM Diagnosis Code A83.2

      Eastern equine encephalitis

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • Venezuelan A92.2
      ICD-10-CM Diagnosis Code A92.2

      Venezuelan equine fever

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

      Applicable To

      • Venezuelan equine encephalitis
      • Venezuelan equine encephalomyelitis virus disease
    • Western A83.1
      ICD-10-CM Diagnosis Code A83.1

      Western equine encephalitis

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • in diseases classified elsewhere G05.3
    ICD-10-CM Diagnosis Code G05.3

    Encephalitis and encephalomyelitis in diseases classified elsewhere

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

    Applicable To

    • Meningoencephalitis in diseases classified elsewhere
  • myalgic G93.32
    ICD-10-CM Diagnosis Code G93.32

    Myalgic encephalomyelitis/chronic fatigue syndrome

    2023 - New Code Billable/Specific Code

    Applicable To

    • Chronic fatigue syndrome
    • ME/CFS
    • Myalgic encephalomyelitis
    • chronic fatigue syndrome [ME/CFS] G93.32
      ICD-10-CM Diagnosis Code G93.32

      Myalgic encephalomyelitis/chronic fatigue syndrome

      2023 - New Code Billable/Specific Code

      Applicable To

      • Chronic fatigue syndrome
      • ME/CFS
      • Myalgic encephalomyelitis
  • postchickenpox B01.11
    ICD-10-CM Diagnosis Code B01.11

    Varicella encephalitis and encephalomyelitis

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

    Applicable To

    • Postchickenpox encephalitis and encephalomyelitis
  • postinfectious NEC G04.01
    ICD-10-CM Diagnosis Code G04.01

    Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)

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

    Type 1 Excludes

    • post chickenpox encephalitis (B01.1)
    • post measles encephalitis (B05.0)
    • post measles myelitis (B05.1)
  • postmeasles B05.0
    ICD-10-CM Diagnosis Code B05.0

    Measles complicated by encephalitis

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

    Applicable To

    • Postmeasles encephalitis
  • postvaccinal G04.02
    ICD-10-CM Diagnosis Code G04.02

    Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

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

    Applicable To

    • Encephalitis, post immunization
    • Encephalomyelitis, post immunization

    Use Additional

    • code to identify the vaccine (T50.A-, T50.B-, T50.Z-)
  • postvaricella B01.11
    ICD-10-CM Diagnosis Code B01.11

    Varicella encephalitis and encephalomyelitis

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

    Applicable To

    • Postchickenpox encephalitis and encephalomyelitis
  • rubella B06.01
    ICD-10-CM Diagnosis Code B06.01

    Rubella encephalitis

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

    Applicable To

    • Rubella meningoencephalitis
  • specified NEC G04.81
    ICD-10-CM Diagnosis Code G04.81

    Other encephalitis and encephalomyelitis

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

    Applicable To

    • Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
  • Venezuelan equine A92.2
    ICD-10-CM Diagnosis Code A92.2

    Venezuelan equine fever

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

    Applicable To

    • Venezuelan equine encephalitis
    • Venezuelan equine encephalomyelitis virus disease