1. Q40 Other congenital malformations of upper alimentary tract

    1. Q40.0 Congenital hypertrophic pyloric stenosis

      Inclusion term(s):

      • Congenital or infantile constriction
      • Congenital or infantile hypertrophy
      • Congenital or infantile spasm
      • Congenital or infantile stenosis
      • Congenital or infantile stricture
    2. Q40.1 Congenital hiatus hernia

      Inclusion term(s):

      • Congenital displacement of cardia through esophageal hiatus
    3. Q40.2 Other specified congenital malformations of stomach

      Inclusion term(s):

      • Congenital displacement of stomach
      • Congenital diverticulum of stomach
      • Congenital hourglass stomach
      • Congenital duplication of stomach
      • Megalogastria
      • Microgastria
    4. Q40.3 Congenital malformation of stomach, unspecified

    5. Q40.8 Other specified congenital malformations of upper alimentary tract

    6. Q40.9 Congenital malformation of upper alimentary tract, unspecified

      Inclusion term(s):

      • Congenital anomaly of upper alimentary tract
      • Congenital deformity of upper alimentary tract
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.