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