1. K63 Other diseases of intestine

    1. K63.0 Abscess of intestine

    2. K63.1 Perforation of intestine (nontraumatic)

      Inclusion term(s):

      • Perforation (nontraumatic) of rectum
    3. K63.2 Fistula of intestine

    4. K63.3 Ulcer of intestine

      Inclusion term(s):

      • Primary ulcer of small intestine
    5. K63.4 Enteroptosis

    6. K63.5 Polyp of colon

    7. K63.8 Other specified diseases of intestine

      1. K63.81 Dieulafoy lesion of intestine

      2. K63.82 Intestinal microbial overgrowth

        • K63.821 Small intestinal bacterial overgrowth
        • K63.822 Small intestinal fungal overgrowth
        • K63.829 Intestinal methanogen overgrowth, unspecified
      3. K63.89 Other specified diseases of intestine

    8. K63.9 Disease of intestine, 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.