Section K40-K46Hernia

Hernia with both gangrene and obstruction is classified to hernia with gangrene.


  • acquired hernia
  • congenital [except diaphragmatic or hiatus] hernia
  • recurrent hernia
  1. K42 Umbilical hernia

    1. K42.0 Umbilical hernia with obstruction, without gangrene

      Inclusion term(s):

      • Umbilical hernia causing obstruction, without gangrene
      • Incarcerated umbilical hernia, without gangrene
      • Irreducible umbilical hernia, without gangrene
      • Strangulated umbilical hernia, without gangrene
    2. K42.1 Umbilical hernia with gangrene

      Inclusion term(s):

      • Gangrenous umbilical hernia
    3. K42.9 Umbilical hernia without obstruction or gangrene

      Inclusion term(s):

      • Umbilical hernia 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.