CPT code 66179: Glaucoma shunt, without graft2026 Medicare rate & RVUs in New Mexico

In New Mexico, Medicare pays $895.06 for 66179 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 66179 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 66179 covers

An ophthalmic surgeon places a drainage tube connected to a plate reservoir outside the eye to redirect aqueous fluid and reduce intraocular pressure. This operation is used for glaucoma when pressure control requires a drainage implant; it is commonly performed in a hospital outpatient department or ambulatory surgery center. The coded service is the shunt placement without a graft, distinguishing it from placement that includes a graft.

Select the code when the operative report supports placement of an aqueous shunt to an extraocular reservoir and confirms that no graft was used. The major-surgery global period includes 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% reduction. For bilateral surgery, modifier 50 is paid at 150%. An assistant at surgery may be paid; 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 New Mexico compares for 66179

Across 109 of 109 payment localities, the facility rate for 66179 runs from $845.08 in Arkansas to $1,163.18 in Alaska. New Mexico pays $895.06. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

66179 rates by state

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

See 66179 in every payment locality

How the 66179 rate is calculated

Each of 66179’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 66179

66179 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 66179

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

How 66179 has changed in New Mexico

Price 66179 for an earlier date of service

Where the New Mexico rate applies

New Mexico is a Medicare payment area, not a city. Our Census mapping connects it to 528 cities and communities in New Mexico. Some span more than one payment area; confirm with the service ZIP.

• Abeytas
• Abiquiu
• Acomita Lake
• Adelino
• Agua Fria
• Alamillo
• Alamo
• Alamogordo

Browse all communities in New Mexico

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