CPT code 55831: Prostatectomy, retropubic, subtotal2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $774.77 for 55831 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 55831 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 55831 covers

This open operation removes the obstructing portion of an enlarged prostate through a retropubic approach, leaving the outer prostate capsule rather than removing the gland as a cancer operation. Urologists typically perform it in a hospital operating room for patients with benign prostatic enlargement who need surgical treatment. The operative approach distinguishes this service from subtotal procedures using a perineal or suprapubic route and from radical prostatectomy.

Report 55831 when the operative record supports subtotal removal by the retropubic route. Documentation should identify the indication, surgical approach, and extent of tissue removed. The code includes related services named in its descriptor, such as control of postoperative bleeding, vasectomy, meatotomy, urethral calibration or dilation, and internal urethrotomy when performed as part of the operation. It has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. In a same-session multiple-procedure claim, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate. Assistant-at-surgery payment may be available; co-surgeon payment requires supporting documentation, and team surgery is 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 55831

Across 109 of 109 payment localities, the facility rate for 55831 runs from $714.29 in Arkansas to $1,011.93 in Alaska. Montana pays $774.77. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

55831 rates by state

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

See 55831 in every payment locality

How the 55831 rate is calculated

Each of 55831’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 55831

55831 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 51

Codes related to 55831

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

How 55831 has changed in Montana

Price 55831 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