No office rate
Choose 66600 when the surgeon removes an iris lesion. 66605 represents iris removal through a corneoscleral section without that lesion-removal distinction.
On this page
CMS RVU26D · Effective 2026-10-01
66605 Iridectomy Medicare reimbursement rates in Massachusetts
Reports surgical removal of iris tissue through a corneoscleral section, with code selection based on the procedure performed and documented approach. Compare 66605 office and facility rates across CMS payment localities in Massachusetts.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 66605 in Massachusetts?
Massachusetts has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$949.03–$1024.19
2 of 2 localities have a supported rate.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Ophthalmic surgery
About 66605: Iridectomy through corneoscleral section
Reports surgical removal of iris tissue through a corneoscleral section, with code selection based on the procedure performed and documented approach.
An ophthalmic surgeon uses a corneoscleral section to remove iris tissue. The operative report should make clear that iris tissue was excised and describe the incision and extent of removal. This code distinguishes the corneoscleral-section procedure from codes for lesion removal and glaucoma-specific peripheral, sector, or total iridectomy procedures.
Report the service for the operation documented, not simply because iris tissue was handled during another eye procedure. The operative note should support the approach and the work performed. Medicare 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 the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Bilateral reporting with modifier 50 is paid at 150%. Medicare does not pay an assistant at surgery for this code; co-surgeons and team surgery are not permitted.
CMS billing rules for 66605
- Global period
- Major surgery with a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included.
- Multiple procedures
- Standard multiple procedure reduction: the highest-valued procedure is paid in full and others at 50% when performed in the same session.
- Bilateral procedures
- Bilateral procedure with modifier 50 is paid at 150%.
- Assistant at surgery
- Statutory restriction: assistant at surgery is not paid.
- Co-surgeons
- Co-surgeons not permitted.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU13.86 · 50%
- Practice expense (office) RVU12.77 · 46%
- Malpractice RVU1.11 · 4%
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.
66605 compared with similar codes
Office rates for Massachusetts, from the same CMS release.
No office rate
66625 is for a glaucoma-related peripheral iridectomy; 66605 describes removal through a corneoscleral section.
No office rate
66630 represents a glaucoma-related sector iridectomy. Use 66605 for the corneoscleral-section service when the documented procedure is not the sector glaucoma procedure.
No office rate
66635 represents a glaucoma-related total iridectomy, while 66605 identifies the corneoscleral-section procedure.
Compare 66605 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Metropolitan Boston →
Office / nonfacility
Unavailable
Facility
$1024.19
Rest Of Massachusetts →
Office / nonfacility
Unavailable
Facility
$949.03
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66605 billing questions
How is 66605 distinguished from 66600?
66605 describes iris removal through a corneoscleral section. Use 66600 when the operation includes removal of an iris lesion.
How does 66605 differ from 66625, 66630, and 66635?
Those codes describe glaucoma-related peripheral, sector, or total iridectomy procedures. Select among them based on the documented glaucoma procedure and extent rather than using 66605 for those services.
What documentation supports 66605?
The operative report should identify the iris tissue removed and document the corneoscleral-section approach. It should also distinguish the service from lesion removal or a glaucoma-specific iridectomy.
Does the 90-day global period include related follow-up?
Yes. The day-before preoperative visit and 90 days of related postoperative care are included in the global period.
How is bilateral 66605 reported for Medicare?
Use modifier 50 for a bilateral procedure; CMS pays the bilateral service at 150%.
Can an assistant or co-surgeon be paid for 66605?
Medicare 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 indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
7,37766500,,Incision of iris,A,,3.73,6.53,NA,6.53,,0.29,10.55,10.55,0,090,0.10,0.70,0.20,2,1,1,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
7,37866505,,Incision of iris,A,,4.11,7.01,NA,7.01,,0.34,11.46,11.46,0,090,0.10,0.70,0.20,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
7,37966600,,Remove iris and lesion,A,,9.87,13.03,NA,13.03,,0.79,23.69,23.69,0,090,0.10,0.70,0.20,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
7,38066605,,Removal of iris,A,,13.86,12.77,NA,12.77,,1.11,27.74,27.74,0,090,0.10,0.70,0.20,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
7,38166625,,Removal of iris,A,,5.17,5.52,NA,5.52,,0.41,11.10,11.10,0,090,0.10,0.70,0.20,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
7,38266630,,Removal of iris,A,,7.10,6.90,NA,6.90,,0.56,14.56,14.56,0,090,0.10,0.70,0.20,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
7,38366635,,Removal of iris,A,,7.19,6.93,NA,6.93,,0.57,14.69,14.69,0,090,0.10,0.70,0.20,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00