• postpolio syndrome (G14)
  • sequelae of poliomyelitis (B91)
  • sequelae of viral encephalitis (B94.1)
  1. A84 Tick-borne viral encephalitis


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

    2. A84.1 Central European tick-borne encephalitis

    3. A84.8 Other tick-borne viral encephalitis

      1. A84.81 Powassan virus disease

      2. A84.89 Other tick-borne viral encephalitis

        Inclusion term(s):

        • Louping ill
    4. A84.9 Tick-borne viral encephalitis, unspecified

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.