CPT code 66625: Iridectomy, peripheral, for glaucoma2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $370.72 for 66625 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 66625 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 66625 covers

An ophthalmologist performs this surgical peripheral iridectomy to remove a portion of iris and create an alternate pathway for aqueous flow, commonly in treating angle-closure glaucoma. The procedure is performed in an operating room through a corneoscleral incision; it is distinct from creating an opening with a laser. The operative report should establish the glaucoma indication and document the iris tissue removed and surgical approach.

Report the code for the documented surgical iridectomy rather than a laser procedure or an iris excision that includes removal of a lesion. 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. For bilateral reporting with modifier 50, CMS pays 150%. Medicare 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.

How Montana compares for 66625

Across 109 of 109 payment localities, the facility rate for 66625 runs from $338.11 in Arkansas to $464.88 in San Benito County, CA. Montana pays $370.72. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

66625 rates by state

Office rate range in each state. Select a state to see its payment localities.

See 66625 in every payment locality

How the 66625 rate is calculated

Each of 66625’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.

Payment rules and modifiers for 66625

66625 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 50

Codes related to 66625

Related codes aren’t interchangeable: bill the code that matches the service performed.

How 66625 has changed in Montana

Price 66625 for an earlier date of service

Where the Montana rate applies

Montana is a Medicare payment area, not a city. Our Census mapping connects it to 497 cities and communities in Montana. Some span more than one payment area; confirm with the service ZIP.

• Absarokee
• Acton
• Alberton
• Alder
• Alzada
• Amsterdam
• Anaconda-Deer Lodge County
• Antelope

Browse all communities in Montana

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

Open CMS sourceHow we calculate rates