C12: Malignant neoplasm of pyriform sinus inclusionTerm Malignant neoplasm of pyriform fossa useAdditionalCode 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) |