C31Malignant neoplasm of accessory sinuses
ICD-10-CM category (non-billable header) code — part of Malignant neoplasms of respiratory and intrathoracic organs (C30-C39)
Subcategories (6)
- 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