1. G03 Meningitis due to other and unspecified causes


    • arachnoiditis NOS
    • leptomeningitis NOS
    • meningitis NOS
    • pachymeningitis NOS


    • meningoencephalitis (G04.-)
    • meningomyelitis (G04.-)
    1. G03.0 Nonpyogenic meningitis

      Inclusion term(s):

      • Aseptic meningitis
      • Nonbacterial meningitis
    2. G03.1 Chronic meningitis

    3. G03.2 Benign recurrent meningitis [Mollaret]

    4. G03.8 Meningitis due to other specified causes

    5. G03.9 Meningitis, unspecified

      Inclusion term(s):

      • Arachnoiditis (spinal) NOS
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.