CPT code 66150: Glaucoma surgery2026 Medicare rate & RVUs in Nevada
Reports glaucoma filtration surgery using a trephine to create a scleral opening with peripheral iris removal to support aqueous outflow.
CMS doesn’t publish an office rate for 66150 in Nevada.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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What 66150 covers
An ophthalmologist performs this filtration operation by using a trephine to create a small opening through the sclera and removing a portion of peripheral iris. The opening provides a route for aqueous humor to leave the anterior chamber and collect beneath the conjunctiva. The code is specific to this trephination technique, rather than glaucoma surgery generally, and is selected from the operative work documented by the surgeon.
The operative report should identify the trephination and iris removal, the treated eye, and any other procedures performed in the same session. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in one session, the highest-valued is paid in full and the others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment is restricted; co-surgeons require supporting documentation, and team surgery is not permitted.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
66150 in Nevada
| Payment locality | Office | Facility |
|---|---|---|
| Nevada | Unavailable | $757.02 |
How the 66150 rate is calculated
Each of 66150’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 66150
RVUs × geographic indexes × conversion factor
Work10.27
10.27 RVUs× 1.000 GPCI
Practice expense11.70
11.70 RVUs× 1.000 GPCI
Malpractice0.82
0.82 RVUs× 1.000 GPCI
Adjusted RVUs
22.7900
Conversion factor
$33.4009
Medicare rate
$761.21
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 66150
66150 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 66150
Glaucoma surgery
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 1 | Bilateral with modifier 50 pays 150% of the fee schedule amount. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.10/0.70/0.20 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 66150
Glaucoma surgery
90-day global period ends
Dec 30, 2026
Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).
Visit on Oct 31, 2026
Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
66150 without 50 · national facility
$761.21
Glaucoma surgery
66150-50 · Bilateral: 150%
$1,141.82
Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).
66150 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 66155Glaucoma surgery
- 66150 uses scleral trephination with peripheral iris removal; 66155 uses thermocauterization for the glaucoma fistulization.
- 66170Trabeculectomy
- 66150 describes trephination with iridectomy. Use 66170 for trabeculectomy ab externo when prior ocular surgery or trauma has not produced the specified scarring circumstance.
- 66172Glaucoma surgery
- 66172 is for trabeculectomy ab externo with scarring from prior ocular surgery or trauma; 66150 is selected for the trephination technique.
66150 billing questions
How is 66150 distinguished from trabeculectomy?
Use 66150 when the documented filtration operation uses scleral trephination with peripheral iris removal. A trabeculectomy is reported with the code matching its technique and prior-surgery circumstances.
What operative details support 66150?
The report should identify the trephine-created scleral opening and peripheral iridectomy, along with the treated eye and any other procedures performed.
How is bilateral surgery reported under the CMS fee schedule?
Bilateral reporting with modifier 50 is paid at 150% under the CMS rule for this code.
Are assistant surgeons or co-surgeons payable?
Assistant-at-surgery payment is restricted. Co-surgeons are payable only with supporting documentation; team surgery is not permitted.
What care is included in the global period?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
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