1. C04 Malignant neoplasm of floor of mouth

    Use additional code to identify:
    alcohol abuse and dependence (F10.-)
    history of tobacco dependence (Z87.891)
    tobacco dependence (F17.-)
    tobacco use (Z72.0)

    1. C04.0 Malignant neoplasm of anterior floor of mouth

      Inclusion term(s):

      • Malignant neoplasm of anterior to the premolar-canine junction
    2. C04.1 Malignant neoplasm of lateral floor of mouth

    3. C04.8 Malignant neoplasm of overlapping sites of floor of mouth

    4. C04.9 Malignant neoplasm of floor of mouth, 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.