66183 Insert anterior drainage device
Also known as: anterior chamber drain, AC drain, Glaucostat
Insertion of anterior chamber drainage device, without extraocular reservoir; initial surgery.
In Plain Language
placing small drain inside front of eye
Clinical Context
Minimally invasive glaucoma surgery with drainage device in anterior chamber. Newer MIGS procedure.
RVU Breakdown
| Work RVU | 12.87 |
| Total RVU | 12.87 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
As a surgical CPT code, proper documentation must include the operative report detailing the procedure performed, patient positioning, approach, findings, and any complications. This code has a 90-day global period, which includes the day of the procedure, 1 day preoperative, and 90 days of postoperative care. Ensure the diagnosis code (ICD-10) supports medical necessity for the procedure.
How This Code Compares
With a work RVU of 12.87, this code ranks in the 67th percentile among Surgery codes — 1.6x the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 66183?
CPT 66183 (Insert anterior drainage device) is a Surgery code. Insertion of anterior chamber drainage device, without extraocular reservoir; initial surgery.
What is the wRVU value for CPT 66183?
The work RVU for CPT 66183 is 12.87. This code is primarily used by glaucoma surgery, MIGS. It has a 90-day global period.
When is CPT 66183 used?
Minimally invasive glaucoma surgery with drainage device in anterior chamber. Newer MIGS procedure.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.