Section A75-A79Rickettsioses
  1. A75 Typhus fever

    Excludes1

    • rickettsiosis due to Ehrlichia sennetsu (A79.81)
    1. A75.0 Epidemic louse-borne typhus fever due to Rickettsia prowazekii

      Inclusion term(s):

      • Classical typhus (fever)
      • Epidemic (louse-borne) typhus
    2. A75.1 Recrudescent typhus [Brill's disease]

      Inclusion term(s):

      • Brill-Zinsser disease
    3. A75.2 Typhus fever due to Rickettsia typhi

      Inclusion term(s):

      • Murine (flea-borne) typhus
    4. A75.3 Typhus fever due to Rickettsia tsutsugamushi

      Inclusion term(s):

      • Scrub (mite-borne) typhus
      • Tsutsugamushi fever
    5. A75.9 Typhus fever, unspecified

      Inclusion term(s):

      • Typhus (fever) 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.