CPT 66999
Unlisted procedure anterior segment eye
Last reviewed August 2026 · DataLily AI data team
Pilot Analysis
Get the complete CPT 66999 analysis
Tell us where to send it. Our team will prepare an analysis of CPT 66999 covering what payers reimburse across markets and where your rate may sit, and email it to you within 5-10 business days. Need it faster? Book a demo.
CPT 66999 at a glance
- Code
- 66999
- Code type
- CPT/HCPCS
- Short descriptor
- Unlisted px ant segment eye
- 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 66999?
CPT 66999 is a CPT/HCPCS procedure code for unlisted procedure anterior segment eye. Its official short descriptor is "Unlisted px ant segment eye". In the ASC context it is grouped under Not typically performed in an ASC.
Is CPT 66999 eligible in an ambulatory surgery center (ASC)?
CPT 66999 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 66999 typically performed?
Hospital outpatient department (POS 22) or office (POS 11). Not typically performed in an ASC.
Which specialties use CPT 66999?
CPT 66999 is most associated with Ophthalmology.
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.