Malignant neoplasm of nasopharynx
Notes: Malignant neoplasm of roof of nasopharynx ; Malignant neoplasm of adenoid ; Malignant neoplasm of pharyngeal tonsil ; Malignant neoplasm of fossa of Rosenmüller ; Malignant neoplasm of opening of auditory tube ; Malignant neoplasm of pharyngeal recess ; 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 ; Malignant neoplasm of nasopharyngeal wall NOS ; 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)