Malignant neoplasm of hypopharynx - C13
Use Additional Code: This note indicates that an additional code should be used in conjunction with the primary code "C13" to provide a complete picture of the patient's condition or to capture associated factors.
Use Additional:
- 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: This note means that the conditions described by two codes are not usually associated with each other but can sometimes occur together.
Type 2 Excludes:
- malignant neoplasm of pyriform sinus (C12)
These ranges represents subcategories of Malignant neoplasm of hypopharynx. The "C13" signifies that these are the diseases within this broad category.