CPT 66170
Glaucoma surgery
CPT 66170 at a glance
- Code
- 66170
- Code type
- CPT/HCPCS
- Short descriptor
- Glaucoma surgery
- 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 66170?
CPT 66170 is a CPT/HCPCS procedure code. Its official CMS short descriptor is "Glaucoma surgery". In the ASC context it is grouped under ASC Surgical.
Is CPT 66170 payable in an ambulatory surgery center (ASC)?
CPT 66170 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 66170 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
Which specialties use CPT 66170?
CPT 66170 is most associated with Ophthalmology.
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.