Index Terms Starting With 'E' (Encephalitis)

  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
    ICD-10-CM Diagnosis Code G04.90

    Encephalitis and encephalomyelitis, unspecified

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

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

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS
      • disseminated G04.00
        ICD-10-CM Diagnosis Code G04.00

        Acute disseminated encephalitis and encephalomyelitis, unspecified

          2016 2017 2018 2019 2020 2021 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 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 Billable/Specific Code
          Applicable To
          • Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
        • postimmunization G04.02
          (postvaccination)
          ICD-10-CM Diagnosis Code G04.02

          Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
          Applicable To
          • Encephalitis, post immunization
          • Encephalomyelitis, post immunization
          Use Additional
        • postinfectious G04.01
          ICD-10-CM Diagnosis Code G04.01

          Postinfectious acute disseminated encephalitis and encephalomyelitis (postinfectious ADEM)

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
          Type 1 Excludes
          • post chickenpox encephalitis (B01.1)
          • post measles encephalitis (B05.0)
          • post measles myelitis (B05.1)
      • inclusion body A85.8
        ICD-10-CM Diagnosis Code A85.8

        Other specified viral encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Encephalitis lethargica
        • Von Economo-Cruchet disease
      • necrotizing hemorrhagic G04.30
        ICD-10-CM Diagnosis Code G04.30

        Acute necrotizing hemorrhagic encephalopathy, unspecified

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

          Postimmunization acute necrotizing hemorrhagic encephalopathy

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
          Use Additional
        • postinfectious G04.31
          ICD-10-CM Diagnosis Code G04.31

          Postinfectious acute necrotizing hemorrhagic encephalopathy

            2016 2017 2018 2019 2020 2021 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 Billable/Specific Code
          Code Also
          • underlying etiology, if applicable
    • arboviral, arbovirus NEC A85.2
      ICD-10-CM Diagnosis Code A85.2

      Arthropod-borne viral encephalitis, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Type 1 Excludes
      • West nile virus with encephalitis (A92.31)
    • arthropod-borne NEC A85.2
      (viral)
      ICD-10-CM Diagnosis Code A85.2

      Arthropod-borne viral encephalitis, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Type 1 Excludes
      • West nile virus with encephalitis (A92.31)
    • Australian A83.4
      ICD-10-CM Diagnosis Code A83.4

      Australian encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Kunjin virus disease
    • California A83.5
      (virus)
      ICD-10-CM Diagnosis Code A83.5

      California encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • California meningoencephalitis
      • La Crosse encephalitis
    • Central European A84.1
      (tick-borne)
      ICD-10-CM Diagnosis Code A84.1

      Central European tick-borne encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • Czechoslovakian A84.1
      ICD-10-CM Diagnosis Code A84.1

      Central European tick-borne encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • Dawson's A81.1
      (inclusion body)
      ICD-10-CM Diagnosis Code A81.1

      Subacute sclerosing panencephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Dawson's inclusion body encephalitis
      • Van Bogaert's sclerosing leukoencephalopathy
    • diffuse sclerosing A81.1
      ICD-10-CM Diagnosis Code A81.1

      Subacute sclerosing panencephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Dawson's inclusion body encephalitis
      • Van Bogaert's sclerosing leukoencephalopathy
    • disseminated, acute G04.00
      ICD-10-CM Diagnosis Code G04.00

      Acute disseminated encephalitis and encephalomyelitis, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • due to
      • cat scratch disease A28.1
        ICD-10-CM Diagnosis Code A28.1

        Cat-scratch disease

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Cat-scratch fever
      • human immunodeficiency virus B20
        (HIV)
        ICD-10-CM Diagnosis Code B20

        Human immunodeficiency virus [HIV] disease

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Code First
        • Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)
        Includes
        • acquired immune deficiency syndrome [AIDS]
        • AIDS-related complex [ARC]
        • HIV infection, symptomatic
        Type 1 Excludes
        • asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
        • exposure to HIV virus (Z20.6)
        • inconclusive serologic evidence of HIV (R75)
        Use Additional
        • code(s) to identify all manifestations of HIV infection
      • malaria - see Malaria
      • rickettsiosis - see Rickettsiosis
      • smallpox inoculation G04.02
        ICD-10-CM Diagnosis Code G04.02

        Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Encephalitis, post immunization
        • Encephalomyelitis, post immunization
        Use Additional
      • typhus - see Typhus
    • Eastern equine A83.2
      ICD-10-CM Diagnosis Code A83.2

      Eastern equine encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • endemic A86
      (viral)
      ICD-10-CM Diagnosis Code A86

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS
    • epidemic NEC A86
      (viral)
      ICD-10-CM Diagnosis Code A86

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS
    • equine (acute) (infectious) (viral) A83.9
      ICD-10-CM Diagnosis Code A83.9

      Mosquito-borne viral encephalitis, unspecified

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

        Eastern equine encephalitis

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

        Venezuelan equine fever

          2016 2017 2018 2019 2020 2021 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 Billable/Specific Code
    • Far Eastern A84.0
      (tick-borne)
      ICD-10-CM Diagnosis Code A84.0

      Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • following vaccination or other immunization procedure G04.02
      ICD-10-CM Diagnosis Code G04.02

      Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Encephalitis, post immunization
      • Encephalomyelitis, post immunization
      Use Additional
    • herpes zoster B02.0
      ICD-10-CM Diagnosis Code B02.0

      Zoster encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Zoster meningoencephalitis
    • herpesviral B00.4
      ICD-10-CM Diagnosis Code B00.4

      Herpesviral encephalitis

        2016 2017 2018 2019 2020 2021 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 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 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 Billable/Specific Code
        Applicable To
        • Human herpesvirus 7 encephalitis
    • Ilheus A83.8
      (virus)
      ICD-10-CM Diagnosis Code A83.8

      Other mosquito-borne viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • in (due to)
      • actinomycosis A42.82
        ICD-10-CM Diagnosis Code A42.82

        Actinomycotic encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • adenovirus A85.1
        ICD-10-CM Diagnosis Code A85.1

        Adenoviral encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Adenoviral meningoencephalitis
      • African trypanosomiasis B56.9
        ICD-10-CM Diagnosis Code B56.9

        African trypanosomiasis, unspecified

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Sleeping sickness NOS
      • Chagas' disease B57.42
        (chronic)
        ICD-10-CM Diagnosis Code B57.42

        Meningoencephalitis in Chagas' disease

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • cytomegalovirus B25.8
        ICD-10-CM Diagnosis Code B25.8

        Other cytomegaloviral diseases

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Cytomegaloviral encephalitis
      • enterovirus A85.0
        ICD-10-CM Diagnosis Code A85.0

        Enteroviral encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Enteroviral encephalomyelitis
      • herpes (simplex) B00.4
        ICD-10-CM Diagnosis Code B00.4

        Herpesviral encephalitis

          2016 2017 2018 2019 2020 2021 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 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 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 Billable/Specific Code
          Applicable To
          • Human herpesvirus 7 encephalitis
      • infectious disease NEC B99
        ICD-10-CM Diagnosis Code B99

        Other and unspecified infectious diseases

          2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
      • influenza - see Influenza, with, encephalopathy
      • listeriosis A32.12
        ICD-10-CM Diagnosis Code A32.12

        Listerial meningoencephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • measles B05.0
        ICD-10-CM Diagnosis Code B05.0

        Measles complicated by encephalitis

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

        Mumps encephalitis

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

        Naegleriasis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Primary amebic meningoencephalitis
      • parasitic disease NEC B89
        ICD-10-CM Diagnosis Code B89

        Unspecified parasitic disease

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • poliovirus A80.9
        ICD-10-CM Diagnosis Code A80.9

        Acute poliomyelitis, unspecified

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • rubella B06.01
        ICD-10-CM Diagnosis Code B06.01

        Rubella encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Rubella meningoencephalitis
      • syphilis
        • congenital A50.42
          ICD-10-CM Diagnosis Code A50.42

          Late congenital syphilitic encephalitis

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

          Late syphilitic encephalitis

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • systemic lupus erythematosus M32.19
        ICD-10-CM Diagnosis Code M32.19

        Other organ or system involvement in systemic lupus erythematosus

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • toxoplasmosis (acquired) B58.2
        ICD-10-CM Diagnosis Code B58.2

        Toxoplasma meningoencephalitis

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

          Congenital toxoplasmosis

            2016 2017 2018 2019 2020 2021 Billable/Specific Code Code on Newborn Record
          Applicable To
          • Hydrocephalus due to congenital toxoplasmosis
      • tuberculosis A17.82
        ICD-10-CM Diagnosis Code A17.82

        Tuberculous meningoencephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Tuberculous myelitis
      • zoster B02.0
        ICD-10-CM Diagnosis Code B02.0

        Zoster encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Zoster meningoencephalitis
    • inclusion body A81.1
      ICD-10-CM Diagnosis Code A81.1

      Subacute sclerosing panencephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Dawson's inclusion body encephalitis
      • Van Bogaert's sclerosing leukoencephalopathy
    • infectious A86
      (acute) (virus)
      ICD-10-CM Diagnosis Code A86

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS
    • Japanese A83.0
      (B type)
      ICD-10-CM Diagnosis Code A83.0

      Japanese encephalitis

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

      California encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • California meningoencephalitis
      • La Crosse encephalitis
    • lead - see Poisoning, lead
    • lethargica A85.8
      (acute) (infectious)
      ICD-10-CM Diagnosis Code A85.8

      Other specified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Encephalitis lethargica
      • Von Economo-Cruchet disease
    • louping ill A84.89
      ICD-10-CM Diagnosis Code A84.89

      Other tick-borne viral encephalitis

        2021 - New Code Billable/Specific Code
      Applicable To
      • Louping ill
      Code First
      • , if applicable, transfusion related infection (T80.22-)
    • lupus erythematosus, systemic M32.19
      ICD-10-CM Diagnosis Code M32.19

      Other organ or system involvement in systemic lupus erythematosus

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • lymphatica A87.2
      ICD-10-CM Diagnosis Code A87.2

      Lymphocytic choriomeningitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Lymphocytic meningoencephalitis
    • Mengo A85.8
      ICD-10-CM Diagnosis Code A85.8

      Other specified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Encephalitis lethargica
      • Von Economo-Cruchet disease
    • meningococcal A39.81
      ICD-10-CM Diagnosis Code A39.81

      Meningococcal encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • Murray Valley A83.4
      ICD-10-CM Diagnosis Code A83.4

      Australian encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Kunjin virus disease
    • otitic NEC H66.40
      ICD-10-CM Diagnosis Code H66.40

      Suppurative otitis media, unspecified, unspecified ear

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • parasitic NOS B71.9
      ICD-10-CM Diagnosis Code B71.9

      Cestode infection, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Tapeworm (infection) NOS
    • periaxial G37.0
      ICD-10-CM Diagnosis Code G37.0

      Diffuse sclerosis of central nervous system

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Periaxial encephalitis
      • Schilder's disease
      Type 1 Excludes
      • X linked adrenoleukodystrophy (E71.52-)
    • periaxialis G37.5
      (concentrica) (diffuse)
      ICD-10-CM Diagnosis Code G37.5

      Concentric sclerosis [Balo] of central nervous system

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • postchickenpox B01.11
      ICD-10-CM Diagnosis Code B01.11

      Varicella encephalitis and encephalomyelitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Postchickenpox encephalitis and encephalomyelitis
    • postexanthematous NEC B09
      ICD-10-CM Diagnosis Code B09

      Unspecified viral infection characterized by skin and mucous membrane lesions

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Viral enanthema NOS
      • Viral exanthema NOS
    • postimmunization G04.02
      ICD-10-CM Diagnosis Code G04.02

      Postimmunization acute disseminated encephalitis, myelitis and encephalomyelitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Encephalitis, post immunization
      • Encephalomyelitis, post immunization
      Use Additional
    • 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 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 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 Billable/Specific Code
      Applicable To
      • Encephalitis, post immunization
      • Encephalomyelitis, post immunization
      Use Additional
    • postvaricella B01.11
      ICD-10-CM Diagnosis Code B01.11

      Varicella encephalitis and encephalomyelitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Postchickenpox encephalitis and encephalomyelitis
    • postviral NEC A86
      ICD-10-CM Diagnosis Code A86

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS
    • Powassan A84.81
      ICD-10-CM Diagnosis Code A84.81

      Powassan virus disease

        2021 - New Code Billable/Specific Code
    • Rasmussen G04.81
      ICD-10-CM Diagnosis Code G04.81

      Other encephalitis and encephalomyelitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
    • Rio Bravo A85.8
      ICD-10-CM Diagnosis Code A85.8

      Other specified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Encephalitis lethargica
      • Von Economo-Cruchet disease
    • Russian
      • autumnal A83.0
        ICD-10-CM Diagnosis Code A83.0

        Japanese encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • spring-summer A84.0
        (taiga)
        ICD-10-CM Diagnosis Code A84.0

        Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • saturnine - see Poisoning, lead
    • specified NEC G04.81
      ICD-10-CM Diagnosis Code G04.81

      Other encephalitis and encephalomyelitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
    • St. Louis A83.3
      ICD-10-CM Diagnosis Code A83.3

      St Louis encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • subacute sclerosing A81.1
      ICD-10-CM Diagnosis Code A81.1

      Subacute sclerosing panencephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Dawson's inclusion body encephalitis
      • Van Bogaert's sclerosing leukoencephalopathy
    • summer A83.0
      ICD-10-CM Diagnosis Code A83.0

      Japanese encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • suppurative G04.81
      ICD-10-CM Diagnosis Code G04.81

      Other encephalitis and encephalomyelitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
    • tick-borne A84.9
      ICD-10-CM Diagnosis Code A84.9

      Tick-borne viral encephalitis, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • Torula, torular B45.1
      (cryptococcal)
      ICD-10-CM Diagnosis Code B45.1

      Cerebral cryptococcosis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Cryptococcal meningitis
      • Cryptococcosis meningocerebralis
    • toxic NEC G92
      ICD-10-CM Diagnosis Code G92

      Toxic encephalopathy

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Toxic encephalitis
      • Toxic metabolic encephalopathy
      Code First
      • , if applicable, drug induced (T36-T50) or use (T51-T65) to identify toxic agent
    • trichinosis B75
      ICD-10-CM Diagnosis Code B75

      Trichinellosis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Includes
      • infection due to Trichinella species
      • trichiniasis
    • type
      • B A83.0
        ICD-10-CM Diagnosis Code A83.0

        Japanese encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • C A83.3
        ICD-10-CM Diagnosis Code A83.3

        St Louis encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • van Bogaert's A81.1
      ICD-10-CM Diagnosis Code A81.1

      Subacute sclerosing panencephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Dawson's inclusion body encephalitis
      • Van Bogaert's sclerosing leukoencephalopathy
    • Venezuelan equine A92.2
      ICD-10-CM Diagnosis Code A92.2

      Venezuelan equine fever

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Venezuelan equine encephalitis
      • Venezuelan equine encephalomyelitis virus disease
    • Vienna A85.8
      ICD-10-CM Diagnosis Code A85.8

      Other specified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Encephalitis lethargica
      • Von Economo-Cruchet disease
    • viral, virus A86
      ICD-10-CM Diagnosis Code A86

      Unspecified viral encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Viral encephalomyelitis NOS
      • Viral meningoencephalitis NOS
      • arthropod-borne NEC A85.2
        ICD-10-CM Diagnosis Code A85.2

        Arthropod-borne viral encephalitis, unspecified

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Type 1 Excludes
        • West nile virus with encephalitis (A92.31)
        • mosquito-borne A83.9
          ICD-10-CM Diagnosis Code A83.9

          Mosquito-borne viral encephalitis, unspecified

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • Australian X disease A83.4
            ICD-10-CM Diagnosis Code A83.4

            Australian encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
            Applicable To
            • Kunjin virus disease
          • California virus A83.5
            ICD-10-CM Diagnosis Code A83.5

            California encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
            Applicable To
            • California meningoencephalitis
            • La Crosse encephalitis
          • Eastern equine A83.2
            ICD-10-CM Diagnosis Code A83.2

            Eastern equine encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • Japanese A83.0
            (B type)
            ICD-10-CM Diagnosis Code A83.0

            Japanese encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • Murray Valley A83.4
            ICD-10-CM Diagnosis Code A83.4

            Australian encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
            Applicable To
            • Kunjin virus disease
          • specified NEC A83.8
            ICD-10-CM Diagnosis Code A83.8

            Other mosquito-borne viral encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • St. Louis A83.3
            ICD-10-CM Diagnosis Code A83.3

            St Louis encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • type B A83.0
            ICD-10-CM Diagnosis Code A83.0

            Japanese encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • type C A83.3
            ICD-10-CM Diagnosis Code A83.3

            St Louis encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • Western equine A83.1
            ICD-10-CM Diagnosis Code A83.1

            Western equine encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
        • tick-borne A84.9
          ICD-10-CM Diagnosis Code A84.9

          Tick-borne viral encephalitis, unspecified

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • biundulant A84.1
            ICD-10-CM Diagnosis Code A84.1

            Central European tick-borne encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • central European A84.1
            ICD-10-CM Diagnosis Code A84.1

            Central European tick-borne encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • Czechoslovakian A84.1
            ICD-10-CM Diagnosis Code A84.1

            Central European tick-borne encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • diphasic meningoencephalitis A84.1
            ICD-10-CM Diagnosis Code A84.1

            Central European tick-borne encephalitis

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • Far Eastern A84.0
            ICD-10-CM Diagnosis Code A84.0

            Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • Russian spring-summer A84.0
            (taiga)
            ICD-10-CM Diagnosis Code A84.0

            Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • specified NEC A84.89
            ICD-10-CM Diagnosis Code A84.89

            Other tick-borne viral encephalitis

              2021 - New Code Billable/Specific Code
            Applicable To
            • Louping ill
            Code First
            • , if applicable, transfusion related infection (T80.22-)
      • specified type NEC A85.8
        ICD-10-CM Diagnosis Code A85.8

        Other specified viral encephalitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Encephalitis lethargica
        • Von Economo-Cruchet disease
      • tick-borne, specified NEC A84.89
        ICD-10-CM Diagnosis Code A84.89

        Other tick-borne viral encephalitis

          2021 - New Code Billable/Specific Code
        Applicable To
        • Louping ill
        Code First
        • , if applicable, transfusion related infection (T80.22-)
    • Western equine A83.1
      ICD-10-CM Diagnosis Code A83.1

      Western equine encephalitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code