Billing code 66710: Ciliary body treatmentMedicare rate & RVUs in Oregon
An ophthalmologist applies laser treatment through the sclera to reduce aqueous production for glaucoma that remains inadequately controlled.
Medicare pays $440.21–$473.85 for 66710 in the office in Oregon, from Rest Of Oregon to Portland. Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What 66710 covers
An ophthalmologist directs laser energy through the outer wall of the eye to treat the ciliary body and reduce aqueous humor production. This procedure is used to lower intraocular pressure in glaucoma, particularly when pressure remains difficult to control despite other treatment. It is typically performed in an outpatient surgical setting, with the treated eye and transscleral approach documented in the operative report.
Report 66710 for transscleral cyclophotocoagulation; distinguish it from ciliary-body destruction using another technique. Document the indication, eye treated, method, and procedure performed. The code has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. For bilateral treatment with modifier 50, CMS pays 150%. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and others at 50%. CMS does not pay an assistant at surgery; co-surgeons and team surgery are 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.
Where 66710 pays more and less in Oregon
| Payment locality | Office | Facility |
|---|---|---|
| Portland | $473.85 | $351.77 |
| Rest Of Oregon | $440.21 | $330.76 |
How the 66710 rate is calculated
Each of 66710’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 · 66710
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 5.01Practice expense 7.92Malpractice 0.40
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 66710
66710 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 66710
Ciliary body treatment
| 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) | 0 | Not permitted. |
| 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 · 66710
Ciliary body treatment
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
66710 without 50 · national office
$445.23
Ciliary body treatment
66710-50 · Bilateral: 150%
$667.85
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).
66710 compared with similar codes
Compare codes
66710 vs 66711 vs 66740 vs 66720: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 66711Endoscopic cyclophotocoagulation
- Use 66710 for laser treatment delivered through the sclera; 66711 is for endoscopic cyclophotocoagulation performed from inside the eye.
- 66740Ciliary body ablation
- 66710 describes transscleral laser treatment. Code 66740 describes ciliary-body destruction by cryotherapy.
- 66720Ciliary body destruction
- 66710 uses transscleral laser energy; 66720 uses diathermy to destroy ciliary-body tissue.
66710 billing questions
How is 66710 distinguished from 66711?
66710 is for cyclophotocoagulation delivered through the sclera. Code 66711 describes the endoscopic approach, in which treatment is delivered from inside the eye.
Can both eyes be reported?
When both eyes are treated, report bilateral treatment with modifier 50. CMS pays the bilateral procedure at 150%.
What postoperative care is included?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
How does the multiple procedure rule affect payment?
When other procedures are performed in the same session, CMS pays the highest-valued procedure in full and the others at 50%.
Can an assistant or co-surgeon be reported?
CMS does not pay an assistant at surgery for this code. Co-surgeons and team surgery are not permitted.
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
Fee sheets
Put 66710 and the rest of your codes on one sheet
Current Medicare rates for every code you bill at your locality, with what changed since last quarter.
Get a fee sheetOr price your code list free →