1. C11 Malignant neoplasm of nasopharynx

    Use Additional code to identify:
    exposure to environmental tobacco smoke (Z77.22)
    exposure to tobacco smoke in the perinatal period (P96.81)
    history of tobacco dependence (Z87.891)
    occupational exposure to environmental tobacco smoke (Z57.31)
    tobacco dependence (F17.-)
    tobacco use (Z72.0)

    1. C11.0 Malignant neoplasm of superior wall of nasopharynx

      Inclusion term(s):

      • Malignant neoplasm of roof of nasopharynx
    2. C11.1 Malignant neoplasm of posterior wall of nasopharynx

      Inclusion term(s):

      • Malignant neoplasm of adenoid
      • Malignant neoplasm of pharyngeal tonsil
    3. C11.2 Malignant neoplasm of lateral wall of nasopharynx

      Inclusion term(s):

      • Malignant neoplasm of fossa of Rosenm├╝ller
      • Malignant neoplasm of opening of auditory tube
      • Malignant neoplasm of pharyngeal recess
    4. C11.3 Malignant neoplasm of anterior wall of nasopharynx

      Inclusion term(s):

      • Malignant neoplasm of floor of nasopharynx
      • Malignant neoplasm of nasopharyngeal (anterior) (posterior) surface of soft palate
      • Malignant neoplasm of posterior margin of nasal choana
      • Malignant neoplasm of posterior margin of nasal septum
    5. C11.8 Malignant neoplasm of overlapping sites of nasopharynx

    6. C11.9 Malignant neoplasm of nasopharynx, unspecified

      Inclusion term(s):

      • Malignant neoplasm of nasopharyngeal wall NOS
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.