A80-A89 Viral and Prion Infection of central nervous system

ICD-10-CM-tabular April 1 2023

Viral and prion infections of the central nervous system (A80-A89)

Excludes1: postpolio syndrome (G14) sequelae of poliomyelitis (B91)

sequelae of viral encephalitis (B94.1)

A80 Acute poliomyelitis
acute flaccid myelitis (G04.82)

  1. A80.0  Acute paralytic poliomyelitis, vaccine-associated
  2. A80.1  Acute paralytic poliomyelitis, wild virus, imported
  3. A80.2  Acute paralytic poliomyelitis, wild virus, indigenous
  4. A80.3  Acute paralytic poliomyelitis, other and unspecified A80.30 Acute paralytic poliomyelitis, unspecified A80.39 Other acute paralytic poliomyelitis
  5. A80.4  Acute nonparalytic poliomyelitis

A80.9 Acute poliomyelitis, unspecified

A81 Atypical virus infections of central nervous system

Includes: diseases of the central nervous system caused by prions

Use additional code, if applicable, to identify:
dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)

dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-) dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3) dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2) dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0) mild neurocognitive disorder due to known physiological condition (F06.7-)

A81.0 Creutzfeldt-Jakob disease

  1. A81.00  Creutzfeldt-Jakob disease, unspecified Jakob-Creutzfeldt disease, unspecified
  2. A81.01  Variant Creutzfeldt-Jakob disease vCJD

A81.09 Other Creutzfeldt-Jakob disease

Familial Creutzfeldt-Jakob disease
Iatrogenic Creutzfeldt-Jakob disease
Sporadic Creutzfeldt-Jakob disease
Subacute spongiform encephalopathy (with dementia)

A81.1 Subacute sclerosing panencephalitis

Dawson’s inclusion body encephalitis
Van Bogaert’s sclerosing leukoencephalopathy

A81.2 Progressive multifocal leukoencephalopathy

Multifocal leukoencephalopathy NOS

  1. A81.8  Other atypical virus infections of central nervous system A81.81 Kuru A81.82 Gerstmann-Sträussler-Scheinker syndrome GSS syndrome A81.83 Fatal familial insomnia FFI A81.89 Other atypical virus infections of central nervous system
  2. A81.9  Atypical virus infection of central nervous system, unspecified Prion diseases of the central nervous system NOS
  1. A82  Rabies
    A82.0 Sylvatic rabies A82.1 Urban rabies
    A82.9 Rabies, unspecified
  2. A83  Mosquito-borne viral encephalitis Includes: mosquito-borne viral meningoencephalitis Excludes2: Venezuelan equine encephalitis (A92.2) West Nile fever (A92.3-) West Nile virus (A92.3-) A83.0 Japanese encephalitis A83.1 Western equine encephalitis A83.2 Eastern equine encephalitis A83.3 St Louis encephalitis A83.4 Australian encephalitis Kunjin virus disease A83.5 California encephalitis California meningoencephalitis La Crosse encephalitis

A83.6 Rocio virus disease

  1. A83.8  Other mosquito-borne viral encephalitis
  2. A83.9  Mosquito-borne viral encephalitis, unspecified

A84 Tick-borne viral encephalitis
tick-borne viral meningoencephalitis
A84.0 Far Eastern tick-borne encephalitis [Russian spring-summer encephalitis]

A84.1 Central European tick-borne encephalitis A84.8 Other tick-borne viral encephalitis

A84.81 Powassan virus disease
A84.89 Other tick-borne viral encephalitis

Louping ill

Code first, if applicable, transfusion related infection (T80.22-) A84.9 Tick-borne viral encephalitis, unspecified

  1. A85  Other viral encephalitis, not elsewhere classified Includes: specified viral encephalomyelitis NEC specified viral meningoencephalitis NEC Excludes1: encephalitis due to cytomegalovirus (B25.8) encephalitis due to herpesvirus NEC (B10.0-) encephalitis due to herpesvirus [herpes simplex] (B00.4) encephalitis due to measles virus (B05.0)
    encephalitis due to mumps virus (B26.2)
    encephalitis due to poliomyelitis virus (A80.-) encephalitis due to zoster (B02.0) lymphocytic choriomeningitis (A87.2) myalgic encephalomyelitis (G93.32) A85.0 Enteroviral encephalitis Enteroviral encephalomyelitis A85.1 Adenoviral encephalitis Adenoviral meningoencephalitis A85.2 Arthropod-borne viral encephalitis, unspecified Excludes1: West nile virus with encephalitis (A92.31) A85.8 Other specified viral encephalitis Encephalitis lethargica
    Von Economo-Cruchet disease
  2. A86  Unspecified viral encephalitis Viral encephalomyelitis NOS Viral meningoencephalitis NOS
  3. A87  Viral meningitis Excludes1: meningitis due to herpesvirus [herpes simplex] (B00.3) meningitis due to herpesvirus [herpes simplex] (B00.3) meningitis due to measles virus (B05.1)
    meningitis due to mumps virus (B26.1) meningitis due to poliomyelitis virus (A80.-) meningitis due to zoster (B02.1) A87.0 Enteroviral meningitis Coxsackievirus meningitis Echovirus meningitis A87.1 Adenoviral meningitis A87.2 Lymphocytic choriomeningitis

Lymphocytic meningoencephalitis

A87.8 Other viral meningitis

A87.9 Viral meningitis, unspecified

  1. A88  Other viral infections of central nervous system, not elsewhere classified Excludes1: viral encephalitis NOS (A86) viral meningitis NOS (A87.9) A88.0 Enteroviral exanthematous fever [Boston exanthem] A88.1 Epidemic vertigo
    A88.8 Other specified viral infections of central nervous system
  2. A89  Unspecified viral infection of central nervous system

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