Index Terms Starting With 'M' (Meningoencephalitis)

  • Meningoencephalitis G04.90
    - see also Encephalitis
    ICD-10-CM Diagnosis Code G04.90

    Encephalitis and encephalomyelitis, unspecified

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Ventriculitis (cerebral) NOS

    • acute NEC A86
      - see also Encephalitis, viral
      ICD-10-CM Diagnosis Code A86

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS
    • bacterial NEC G04.2
      ICD-10-CM Diagnosis Code G04.2

      Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • California A83.5
      ICD-10-CM Diagnosis Code A83.5

      California encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • California meningoencephalitis
      • La Crosse encephalitis
    • diphasic A84.1
      ICD-10-CM Diagnosis Code A84.1

      Central European tick-borne encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • eosinophilic B83.2
      ICD-10-CM Diagnosis Code B83.2

      Angiostrongyliasis due to Parastrongylus cantonensis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Eosinophilic meningoencephalitis due to Parastrongylus cantonensis
      Type 2 Excludes
      • intestinal angiostrongyliasis (B81.3)
    • epidemic A39.81
      ICD-10-CM Diagnosis Code A39.81

      Meningococcal encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • herpesviral, herpetic B00.4
      ICD-10-CM Diagnosis Code B00.4

      Herpesviral encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Herpesviral meningoencephalitis
      • Simian B disease
      Type 1 Excludes
      • herpesviral encephalitis due to herpesvirus 6 and 7 (B10.01, B10.09)
      • non-simplex herpesviral encephalitis (B10.0-)
      • due to herpesvirus 6 B10.01
        ICD-10-CM Diagnosis Code B10.01

        Human herpesvirus 6 encephalitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      • due to herpesvirus 7 B10.09
        ICD-10-CM Diagnosis Code B10.09

        Other human herpesvirus encephalitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Human herpesvirus 7 encephalitis
      • specified NEC B10.09
        ICD-10-CM Diagnosis Code B10.09

        Other human herpesvirus encephalitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Human herpesvirus 7 encephalitis
    • in (due to)
      • blastomycosis NEC B40.81
        ICD-10-CM Diagnosis Code B40.81

        Blastomycotic meningoencephalitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Meningomyelitis due to blastomycosis
      • 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 Billable/Specific Code Manifestation Code
        Applicable To
        • Meningoencephalitis in diseases classified elsewhere
      • free-living amebae B60.2
        ICD-10-CM Diagnosis Code B60.2

        Naegleriasis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Primary amebic meningoencephalitis
      • H. influenzae G00.0
        ICD-10-CM Diagnosis Code G00.0

        Hemophilus meningitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Meningitis due to Hemophilus influenzae
      • Hemophilus influenzae G00.0
        (H .influenzae)
        ICD-10-CM Diagnosis Code G00.0

        Hemophilus meningitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Meningitis due to Hemophilus influenzae
      • herpes B00.4
        ICD-10-CM Diagnosis Code B00.4

        Herpesviral encephalitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Herpesviral meningoencephalitis
        • Simian B disease
        Type 1 Excludes
        • herpesviral encephalitis due to herpesvirus 6 and 7 (B10.01, B10.09)
        • non-simplex herpesviral encephalitis (B10.0-)
        • due to herpesvirus 6 B10.01
          ICD-10-CM Diagnosis Code B10.01

          Human herpesvirus 6 encephalitis

            2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        • due to herpesvirus 7 B10.09
          ICD-10-CM Diagnosis Code B10.09

          Other human herpesvirus encephalitis

            2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
          Applicable To
          • Human herpesvirus 7 encephalitis
        • specified NEC B10.09
          ICD-10-CM Diagnosis Code B10.09

          Other human herpesvirus encephalitis

            2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
          Applicable To
          • Human herpesvirus 7 encephalitis
      • Lyme disease A69.22
        ICD-10-CM Diagnosis Code A69.22

        Other neurologic disorders in Lyme disease

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Cranial neuritis
        • Meningoencephalitis
        • Polyneuropathy
      • mercury T56.1
        ICD-10-CM Diagnosis Code T56.1

        Toxic effects of mercury and its compounds

          2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
      • mumps B26.2
        ICD-10-CM Diagnosis Code B26.2

        Mumps encephalitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      • Naegleria B60.2
        (amebae) (organisms) (fowleri)
        ICD-10-CM Diagnosis Code B60.2

        Naegleriasis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Primary amebic meningoencephalitis
      • Parastrongylus cantonensis B83.2
        ICD-10-CM Diagnosis Code B83.2

        Angiostrongyliasis due to Parastrongylus cantonensis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        Applicable To
        • Eosinophilic meningoencephalitis due to Parastrongylus cantonensis
        Type 2 Excludes
        • intestinal angiostrongyliasis (B81.3)
      • toxoplasmosis (acquired) B58.2
        ICD-10-CM Diagnosis Code B58.2

        Toxoplasma meningoencephalitis

          2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
        • congenital P37.1
          ICD-10-CM Diagnosis Code P37.1

          Congenital toxoplasmosis

            2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code Code on Newborn Record
          Applicable To
          • Hydrocephalus due to congenital toxoplasmosis
    • infectious A86
      (acute) (viral)
      ICD-10-CM Diagnosis Code A86

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS
    • influenzal G00.0
      (H. influenzae)
      ICD-10-CM Diagnosis Code G00.0

      Hemophilus meningitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Meningitis due to Hemophilus influenzae
    • Listeria monocytogenes A32.12
      ICD-10-CM Diagnosis Code A32.12

      Listerial meningoencephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • lymphocytic A87.2
      (serous)
      ICD-10-CM Diagnosis Code A87.2

      Lymphocytic choriomeningitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Lymphocytic meningoencephalitis
    • mumps B26.2
      ICD-10-CM Diagnosis Code B26.2

      Mumps encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • parasitic NEC B89
      ICD-10-CM Diagnosis Code B89

      Unspecified parasitic disease

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • pneumococcal G04.2
      ICD-10-CM Diagnosis Code G04.2

      Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • primary amebic B60.2
      ICD-10-CM Diagnosis Code B60.2

      Naegleriasis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Primary amebic meningoencephalitis
    • specific A52.14
      (syphilitic)
      ICD-10-CM Diagnosis Code A52.14

      Late syphilitic encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • specified organism NEC G04.81
      ICD-10-CM Diagnosis Code G04.81

      Other encephalitis and encephalomyelitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
    • staphylococcal G04.2
      ICD-10-CM Diagnosis Code G04.2

      Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • streptococcal G04.2
      ICD-10-CM Diagnosis Code G04.2

      Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • syphilitic A52.14
      ICD-10-CM Diagnosis Code A52.14

      Late syphilitic encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • toxic NEC G92.8
      ICD-10-CM Diagnosis Code G92.8

      Other toxic encephalopathy

        2022 - New Code Billable/Specific Code
      Applicable To
      • Toxic encephalitis
      • Toxic metabolic encephalopathy
      Code First
      • poisoning due to drug or toxin, if applicable, (T36-T65 with fifth or sixth character 1-4 or 6)
      Use Additional
      • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
      • due to mercury T56.1
        ICD-10-CM Diagnosis Code T56.1

        Toxic effects of mercury and its compounds

          2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    • tuberculous A17.82
      ICD-10-CM Diagnosis Code A17.82

      Tuberculous meningoencephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Tuberculous myelitis
    • virus NEC A86
      ICD-10-CM Diagnosis Code A86

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS