CPT code 64583: Stimulator revision, hypoglossal array and generator2026 Medicare rate & RVUs in Montana

In Montana, Medicare pays $745.04 for 64583 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 64583 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 64583 covers

This operating-room service revises or replaces an implanted hypoglossal nerve stimulation array and pulse generator. It is typically performed by an otolaryngologist or another surgeon experienced with hypoglossal nerve stimulation for obstructive sleep apnea. The work concerns an existing system, rather than the initial implantation used to treat a patient with sleep-disordered breathing.

Report 64583 when the operative work revises or replaces the hypoglossal array and pulse generator; document the existing device, the reason for the procedure, and the components addressed. The code has a 90-day global period, which includes the day-before preoperative visit and related postoperative care during that period. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery, co-surgeon, and team-surgery payment requires supporting documentation; an assistant also requires documentation of medical necessity.

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 64583

Across 109 of 109 payment localities, the facility rate for 64583 runs from $683.03 in Arkansas to $963.69 in Alaska. Montana pays $745.04. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

64583 rates by state

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

See 64583 in every payment locality

How the 64583 rate is calculated

Each of 64583’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 64583

64583 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 64583

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

How 64583 has changed in Montana

Price 64583 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