C31.9Billable
Malignant neoplasm of accessory sinus, unspecified
- Chapter
- II — Neoplasms
- Category
- C31
- Parent code
- C31
Code family — category C31
Every other code sharing category C31, for context when choosing between close variants.
C31Header
Malignant neoplasm of accessory sinuses
C31.0Billable
Malignant neoplasm of maxillary sinus
C31.1Billable
Malignant neoplasm of ethmoidal sinus
C31.2Billable
Malignant neoplasm of frontal sinus
C31.3Billable
Malignant neoplasm of sphenoid sinus
C31.8Billable
Malignant neoplasm of overlapping sites of accessory sinuses
Use this via the API
The same record, as JSON — free for single lookups, no API key required.
request
curl https://patientary.com/api/v1/icd10/C31.9
Patientary is an informational reference tool built on public data (CMS NPPES and the official ICD-10-CM release). It is not medical, coding, legal or billing advice, and code assignment is the responsibility of a qualified professional. Always verify against the primary source before you bill or file.