1. G98 Other disorders of nervous system not elsewhere classified

    Includes:

    • nervous system disorder NOS
    1. G98.0 Neurogenic arthritis, not elsewhere classified

      Inclusion term(s):

      • Nonsyphilitic neurogenic arthropathy NEC
      • Nonsyphilitic neurogenic spondylopathy NEC
    2. G98.8 Other disorders of nervous system

      Inclusion term(s):

      • Nervous system disorder 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.