C31 – Malignant neoplasm of accessory sinuses
Coding Notes
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Non-billable / Non-specific, not valid for HIPAA-covered transactions
Child Codes
Sibling Codes
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| Code | Title |
|---|---|
| C00-D49 | Neoplasms (C00-D49) |
| C30-C39 | Malignant neoplasms of respiratory and intrathoracic organs (C30-C39) |
| C31 | Malignant neoplasm of accessory sinuses |
| 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 |