CPT code 77021: MRI needle guidance, needle placement2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $426.86 for 77021 in the office.

Check a contract rate as a % of Medicare · 77021 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 77021 covers

This service covers MRI imaging used to direct needle placement during a percutaneous procedure, such as a biopsy, aspiration, or injection. The radiologist or other qualified imaging professional monitors the needle’s position and provides the imaging supervision and interpretation; the procedural clinician performs the intervention. It is typically furnished in an MRI suite when the target or approach calls for MRI guidance rather than CT, fluoroscopy, or another modality.

Select this code based on the imaging method and the service performed, not simply because an MRI was obtained. Documentation should identify the target, the needle-guidance procedure, and the imaging supervision and interpretation. Report it with the related procedure only when that procedure’s code does not already include the same guidance. CMS recognizes professional and technical components: modifier 26 reports the interpretation, modifier TC reports the equipment and staff, and no modifier represents the global 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 77021

Across 109 of 109 payment localities, the office rate for 77021 runs from $372.63 in Arkansas to $596.93 in San Benito County, CA. Montana pays $426.86. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

77021 rates by state

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

See 77021 in every payment locality

How the 77021 rate is calculated

Each of 77021’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 77021

The CMS indicators that decide how 77021 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

Codes related to 77021

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

How 77021 has changed in Montana

Price 77021 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