CPT 31256
Exploration maxillary sinus
CPT 31256 at a glance
- Code
- 31256
- Code type
- CPT/HCPCS
- Short descriptor
- Exploration maxillary sinus
- Category
- ASC Surgical
- ASC payment status
- Payable in an ASC (surgical)
- CMS addendum
- AA (Surgical)
- Typical setting
- Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
What is CPT code 31256?
CPT 31256 is a CPT/HCPCS procedure code. Its official CMS short descriptor is "Exploration maxillary sinus". In the ASC context it is grouped under ASC Surgical.
Is CPT 31256 payable in an ambulatory surgery center (ASC)?
CPT 31256 appears on Medicare's ASC Covered Procedures List (CMS Addendum AA), so Medicare reimburses it when the surgery is performed in a certified ambulatory surgery center.
Where is CPT 31256 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
Which specialties use CPT 31256?
CPT 31256 is most associated with General Surgery, Otolaryngology (ENT).
Reference information compiled from the CMS April 2026 ASC payment addenda (AA, BB, EE). Codes, descriptors, and ASC payment status change with each CMS update. This is a coding reference, not billing, coding, or legal advice. Always verify against the current CMS addenda and individual payer policy before billing. CPT is a registered trademark of the American Medical Association.