C13 - Malignant neoplasm of hypopharynx
Use Additional Code:
-code to identify:
-exposure to environmental tobacco smoke Z77.22)
-exposure to tobacco smoke in the perinatal period P96.81)
-history of tobacco use Z87.891)
-occupational exposure to environmental tobacco smoke Z57.31)
-tobacco dependence (F17.-)
-tobacco use Z72.0)
Excludes 2:
-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