C31.9 Malignant neoplasm of accessory sinus, unspecified
Billable / valid for submission
ICD10CM
Release FY2026
Version history
| Release | Valid from | Valid to | Description | Billable |
|---|
| FY2026 | 2025-10-01 | current | Malignant neoplasm of accessory sinus, unspecified | yes |
Related codes in C31
- 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
All C31 codes →