1. Q42 Congenital absence, atresia and stenosis of large intestine

    Includes:

    • congenital obstruction, occlusion and stricture of large intestine
    1. Q42.0 Congenital absence, atresia and stenosis of rectum with fistula

    2. Q42.1 Congenital absence, atresia and stenosis of rectum without fistula

      Inclusion term(s):

      • Imperforate rectum
    3. Q42.2 Congenital absence, atresia and stenosis of anus with fistula

    4. Q42.3 Congenital absence, atresia and stenosis of anus without fistula

      Inclusion term(s):

      • Imperforate anus
    5. Q42.8 Congenital absence, atresia and stenosis of other parts of large intestine

    6. Q42.9 Congenital absence, atresia and stenosis of large intestine, part 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.