Excludes1

  • Kaposi's sarcoma of gastrointestinal sites (C46.4)

Excludes2

  • gastrointestinal stromal tumors (C49.A-)
  1. C19 Malignant neoplasm of rectosigmoid junction

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.