CPT 31090
Exploration of sinuses
CPT 31090 at a glance
- Code
- 31090
- Code type
- CPT/HCPCS
- Short descriptor
- Exploration of sinuses
- Category
- ASC Surgical
- ASC eligibility
- ASC-eligible (surgical)
- Typical setting
- Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
- Medicare ASC rate
- $3,025.62 national · 2026Q2
What is CPT code 31090?
CPT 31090 is a CPT/HCPCS procedure code. Its official short descriptor is "Exploration of sinuses". In the ASC context it is grouped under ASC Surgical.
Is CPT 31090 eligible in an ambulatory surgery center (ASC)?
CPT 31090 can be performed in a certified ambulatory surgery center.
Where is CPT 31090 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
What is the Medicare ASC payment rate for CPT 31090?
The national Medicare ASC payment rate for CPT 31090 is $3,025.62 (CMS ASC Payment System, 2026Q2). This is the national, unadjusted amount published by CMS; the amount an individual ambulatory surgery center is paid is adjusted for local wage index and may differ. It reflects Medicare's facility payment only and does not include the surgeon's professional fee.
Which specialties use CPT 31090?
CPT 31090 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.