CPT code 66984: Cataract surgery, standard, without ECP or drainage device2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $462.57 for 66984 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 66984 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 66984 covers

Ophthalmologists typically perform this operation in ambulatory surgery centers or hospital outpatient departments. The surgeon removes the cloudy lens while retaining the capsule needed to support an intraocular lens, usually using phacoemulsification, and implants the lens in the same session. Capsulorrhexis, irrigation and aspiration, viscoelastic use, and wound construction are part of the operation. The operative report should identify the eye treated, lens implantation, and any devices or techniques used.

Report 66984 when the case does not require the devices or techniques that define complex cataract surgery under 66982. Identify a unilateral eye with RT or LT; use modifier 79 for surgery on the other eye during the first eye’s global period. The 90-day global includes the day-before preoperative visit and related postoperative care. Surgical care and transferred postoperative care can be split with modifiers 54 and 55. Same-session bilateral surgery with modifier 50 is paid at 150%. For other same-session procedures, CMS pays the highest-valued procedure in full and reduces others to 50%. Assistant surgery is statutorily unpaid; 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 66984

Across 109 of 109 payment localities, the facility rate for 66984 runs from $424.94 in Arkansas to $587.58 in Alaska. Montana pays $462.57. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

66984 rates by state

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

See 66984 in every payment locality

How the 66984 rate is calculated

Each of 66984’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 66984

66984 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 66984

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

How 66984 has changed in Montana

Price 66984 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