C13: Malignant neoplasm of hypopharynx 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) excludes2 malignant neoplasm of pyriform sinus (C12) |
| C13.0: Malignant neoplasm of postcricoid region |
| C13.1: Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect |
| C13.2: Malignant neoplasm of posterior wall of hypopharynx |
| C13.8: Malignant neoplasm of overlapping sites of hypopharynx |
| C13.9: Malignant neoplasm of hypopharynx, unspecified |