1. C09 Malignant neoplasm of tonsil

    1. C09.0 Malignant neoplasm of tonsillar fossa

    2. C09.1 Malignant neoplasm of tonsillar pillar (anterior) (posterior)

    3. C09.8 Malignant neoplasm of overlapping sites of tonsil

    4. C09.9 Malignant neoplasm of tonsil, unspecified

      Inclusion term(s):

      • Malignant neoplasm of tonsil NOS
      • Malignant neoplasm of faucial tonsils
      • Malignant neoplasm of palatine tonsils
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.