CPT code 66630: Iris excision, non-glaucoma indication2026 Medicare rate & RVUs in California
Reports surgical removal of iris tissue through a corneoscleral incision when the documented indication is other than glaucoma or removal of an iris lesion.
CMS doesn’t publish an office rate for 66630 in California.
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 66630 covers
An ophthalmologist removes a portion of iris through a corneoscleral incision for a documented indication other than glaucoma. The operation is performed in an operating room. The operative report should identify the non-glaucoma reason for surgery, the eye treated, the approach, and the iris tissue removed. A lesion-directed procedure is distinguished by its specific lesion-removal purpose.
Report 66630 when the procedure and indication match this non-glaucoma iridectomy, rather than a glaucoma-directed or lesion-removal code. CMS assigns a 90-day major-surgery global period, including the day-before preoperative visit and 90 days of related postoperative care. When other procedures are performed in the same session, the highest-valued procedure is paid in full and the others at 50%. Bilateral reporting with modifier 50 is paid at 150%. CMS does not pay an assistant at surgery and does not permit co-surgeons or team surgery for this code.
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 66630 pays more and less in California
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
29 of 29 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Bakersfield, CA | Unavailable | $505.63 |
| Chico, CA | Unavailable | $503.79 |
| El Centro, CA | Unavailable | $503.89 |
| Fresno, CA | Unavailable | $503.79 |
| Hanford, CA | Unavailable | $503.79 |
| Los Angeles, CA | Unavailable | $531.93 |
| Madera, CA | Unavailable | $503.79 |
| Marin County, CA | Unavailable | $593.22 |
| Merced, CA | Unavailable | $503.79 |
| Modesto, CA | Unavailable | $503.79 |
| Napa, CA | Unavailable | $565.34 |
| Oxnard, CA | Unavailable | $527.85 |
| Redding, CA | Unavailable | $503.79 |
| Rest of California | Unavailable | $503.79 |
| Riverside, CA | Unavailable | $509.96 |
| Sacramento, CA | Unavailable | $523.74 |
| Salinas, CA | Unavailable | $521.63 |
| San Benito County, CA | Unavailable | $605.59 |
| San Diego, CA | Unavailable | $530.04 |
| San Francisco, CA | Unavailable | $592.58 |
| San Luis Obispo, CA | Unavailable | $513.70 |
| Santa Clara County, CA | Unavailable | $602.99 |
| Santa Cruz, CA | Unavailable | $532.17 |
| Santa Maria, CA | Unavailable | $522.54 |
| Santa Rosa, CA | Unavailable | $537.30 |
| Stockton, CA | Unavailable | $503.79 |
| Vallejo, CA | Unavailable | $564.43 |
| Visalia, CA | Unavailable | $503.79 |
| Yuba City, CA | Unavailable | $503.79 |
How the 66630 rate is calculated
Each of 66630’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 · 66630
RVUs × geographic indexes × conversion factor
Work7.10
7.10 RVUs× 1.000 GPCI
Practice expense6.90
6.90 RVUs× 1.000 GPCI
Malpractice0.56
0.56 RVUs× 1.000 GPCI
Adjusted RVUs
14.5600
Conversion factor
$33.4009
Medicare rate
$486.32
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 66630
66630 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 66630
Iris excision, non-glaucoma indication
| 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 · 66630
Iris excision, non-glaucoma indication
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
66630 without 50 · national facility
$486.32
Iris excision, non-glaucoma indication
66630-50 · Bilateral: 150%
$729.48
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).
66630 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 66625IridectomyPeripheral, for glaucoma
- Choose 66625 for an iridectomy performed to treat glaucoma. Code 66630 is for a non-glaucoma indication.
- 66600Iris surgeryLesion removal
- Choose 66600 when the operation removes an iris lesion. Code 66630 is for a non-glaucoma iridectomy not directed at lesion removal.
- 66680Iris repairIris or ciliary body
- Code 66680 describes repair involving the iris and ciliary body; 66630 removes iris tissue instead of reconstructing those structures.
66630 billing questions
How is 66630 distinguished from 66625?
Use 66630 when the iridectomy is for a documented indication other than glaucoma. Code 66625 is the glaucoma-directed iridectomy in this family.
When is 66600 a better choice?
Use 66600 when the procedure is specifically for removal of an iris lesion. Code 66630 describes an iridectomy for a non-glaucoma indication other than lesion removal.
What documentation supports 66630?
The operative report should state the non-glaucoma indication, identify the eye and surgical approach, and describe the iris tissue removed.
How are bilateral procedures reported?
CMS identifies this as a bilateral procedure; reporting modifier 50 is paid at 150%.
Are the preoperative visit and postoperative care separately included?
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
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