• chronic obstructive pulmonary disease with acute lower respiratory infection (J44.0)
  1. J01 Acute sinusitis

    Use additional code (B95-B97) to identify infectious agent.


    • acute abscess of sinus
    • acute empyema of sinus
    • acute infection of sinus
    • acute inflammation of sinus
    • acute suppuration of sinus



    1. J01.0 Acute maxillary sinusitis

      Inclusion term(s):

      • Acute antritis
      1. J01.00 Acute maxillary sinusitis, unspecified

      2. J01.01 Acute recurrent maxillary sinusitis

    2. J01.1 Acute frontal sinusitis

      1. J01.10 Acute frontal sinusitis, unspecified

      2. J01.11 Acute recurrent frontal sinusitis

    3. J01.2 Acute ethmoidal sinusitis

      1. J01.20 Acute ethmoidal sinusitis, unspecified

      2. J01.21 Acute recurrent ethmoidal sinusitis

    4. J01.3 Acute sphenoidal sinusitis

      1. J01.30 Acute sphenoidal sinusitis, unspecified

      2. J01.31 Acute recurrent sphenoidal sinusitis

    5. J01.4 Acute pansinusitis

      1. J01.40 Acute pansinusitis, unspecified

      2. J01.41 Acute recurrent pansinusitis

    6. J01.8 Other acute sinusitis

      1. J01.80 Other acute sinusitis

        Inclusion term(s):

        • Acute sinusitis involving more than one sinus but not pansinusitis
      2. J01.81 Other acute recurrent sinusitis

        Inclusion term(s):

        • Acute recurrent sinusitis involving more than one sinus but not pansinusitis
    7. J01.9 Acute sinusitis, unspecified

      1. J01.90 Acute sinusitis, unspecified

      2. J01.91 Acute recurrent sinusitis, 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.