Malignant neoplasm of accessory sinuses - C31

These ranges represents subcategories of Malignant neoplasm of accessory sinuses. The "C31" signifies that these are the diseases within this broad category.

Codes:

C31.0 - Malignant neoplasm of maxillary sinus
C31.1 - Malignant neoplasm of ethmoidal sinus
C31.2 - Malignant neoplasm of frontal sinus
C31.3 - Malignant neoplasm of sphenoid sinus
C31.8 - Malignant neoplasm of overlapping sites of accessory sinuses
C31.9 - Malignant neoplasm of accessory sinus, unspecified