CPT code 28320: Bone repair, tarsal nonunion or malunion2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $577.74 for 28320 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 28320 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 28320 covers

This service addresses a tarsal bone that has not healed or has healed in a position that needs surgical correction. An orthopedic or podiatric surgeon may realign and stabilize the bone, with grafting when needed. Examples include a persistent nonunion or a symptomatic malunion involving a tarsal bone such as the navicular, talus, or calcaneus. These repairs are generally performed in an operating-room setting.

Report 28320 when the operative work treats a tarsal-bone nonunion or malunion, not when the procedure is an osteotomy for another corrective purpose or treatment of an acute fracture. The operative report should identify the bone, the healing problem, relevant prior treatment, and the repair performed. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. For bilateral surgery, modifier 50 is paid at 150%. In a same-session multiple-procedure claim, the highest-valued procedure is paid in full and others at 50%. An assistant at surgery may be paid; co-surgeons require 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 28320

Across 109 of 109 payment localities, the facility rate for 28320 runs from $523.43 in Arkansas to $724.33 in Alaska. Montana pays $577.74. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

28320 rates by state

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

See 28320 in every payment locality

How the 28320 rate is calculated

Each of 28320’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 28320

28320 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 28320

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

How 28320 has changed in Montana

Price 28320 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