CPT code 31259: Sinus endoscopy, total ethmoidectomy, sphenoid tissue removal2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $397.06 for 31259 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 31259 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 31259 covers

An otolaryngologist, often a rhinologist, performs this endoscopic sinus operation to treat disease involving both the ethmoid and sphenoid sinuses. The surgeon removes tissue from the anterior and posterior ethmoid air cells, opens the sphenoid sinus, and removes tissue from within it. Typical cases involve chronic inflammatory disease or polyps affecting these areas, with surgery commonly performed in an operating room.

Select this code when the operative report supports the full ethmoid work and removal of tissue from the sphenoid sinus; an opening alone is not enough for the tissue-removal component. The 0-day global period includes same-day preoperative and postoperative care. When related endoscopies are performed together, CMS endoscopy family pricing applies. For bilateral surgery, modifier 50 is paid at 150%. Medicare does not pay an assistant at surgery, and does not permit co-surgeons or team surgery for this service.

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 31259

Across 109 of 109 payment localities, the facility rate for 31259 runs from $365.57 in Wisconsin to $522.16 in Alaska. Montana pays $397.06. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

31259 rates by state

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

See 31259 in every payment locality

How the 31259 rate is calculated

Each of 31259’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 31259

The CMS indicators that decide how 31259 is paid alongside other services.

What modifiers do to the payment

When to use modifier 50

Codes related to 31259

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

How 31259 has changed in Montana

Price 31259 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