• sexually transmitted chlamydial diseases (A55-A56)
  1. A74 Other diseases caused by chlamydiae


    • neonatal chlamydial conjunctivitis (P39.1)
    • neonatal chlamydial pneumonia (P23.1)
    • Reiter's disease (M02.3-)
    • sexually transmitted chlamydial diseases (A55-A56)


    • chlamydial pneumonia (J16.0)
    1. A74.0 Chlamydial conjunctivitis

      Inclusion term(s):

      • Paratrachoma
    2. A74.8 Other chlamydial diseases

      1. A74.81 Chlamydial peritonitis

      2. A74.89 Other chlamydial diseases

    3. A74.9 Chlamydial infection, unspecified

      Inclusion term(s):

      • Chlamydiosis 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.