Excludes2

  • hiatus hernia (K44.-)
  1. K21 Gastro-esophageal reflux disease

    Excludes1

    • newborn esophageal reflux (P78.83)
    1. K21.0 Gastro-esophageal reflux disease with esophagitis

      1. K21.00 Gastro-esophageal reflux disease with esophagitis, without bleeding

        Inclusion term(s):

        • Reflux esophagitis
      2. K21.01 Gastro-esophageal reflux disease with esophagitis, with bleeding

    2. K21.9 Gastro-esophageal reflux disease without esophagitis

      Inclusion term(s):

      • Esophageal reflux 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.