CPT 31299
Unlisted procedure accessory sinus
Last reviewed August 2026 · DataLily AI data team
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CPT 31299 at a glance
- Code
- 31299
- Code type
- CPT/HCPCS
- Short descriptor
- Unlisted px accessory sinus
- Category
- Not typically performed in an ASC
- ASC eligibility
- Not typically performed in an ASC
- Typical setting
- Hospital outpatient department (POS 22) or office (POS 11). Not typically performed in an ASC.
What is CPT code 31299?
CPT 31299 is a CPT/HCPCS procedure code for unlisted procedure accessory sinus. Its official short descriptor is "Unlisted px accessory sinus". In the ASC context it is grouped under Not typically performed in an ASC.
Is CPT 31299 eligible in an ambulatory surgery center (ASC)?
CPT 31299 is not typically performed in an ambulatory surgery center; it is usually done in a hospital outpatient department (HOPD) or office instead.
Where is CPT 31299 typically performed?
Hospital outpatient department (POS 22) or office (POS 11). Not typically performed in an ASC.
Which specialties use CPT 31299?
CPT 31299 is most associated with General Surgery, Otolaryngology (ENT).
Reference information about ASC eligibility and typical procedure setting. Codes, descriptors, and ASC-eligibility status change over time. This is a coding reference, not billing, coding, or legal advice. Always verify against current guidance and individual payer policy before scheduling or billing. CPT is a registered trademark of the American Medical Association. Read the DataLily AI data methodology.