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CPT code 58580: Fibroid ablation, transcervical radiofrequency2026 Medicare rate & RVUs in Montana

Report transcervical radiofrequency ablation when a gynecologist treats uterine fibroids through the cervix with intraoperative ultrasound guidance and monitoring.

CMS RVU26DEffective Oct 1, 2026One payment locality

In Montana, Medicare pays $2,617.88 for 58580 in the office and $360.65 when it’s performed in a hospital or facility.

$2,617.88Office (non-facility)
$360.65Hospital or facility
−0.0%vs the national office rate ($2,617.96)

Check a contract rate as a % of Medicare · 58580 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open 58580 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Montana
  2. What 58580 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 58580 covers

This procedure treats uterine leiomyomas by delivering radiofrequency energy through an instrument passed through the cervix. Intraoperative ultrasound guides placement and monitors treatment of the targeted fibroids. Gynecologists typically perform it as a uterine-sparing treatment in a surgical setting. Unlike myomectomy, the technique ablates fibroid tissue rather than excising it.

Report the code for the transcervical radiofrequency procedure; it covers treatment of one or more fibroids and includes the intraoperative ultrasound guidance and monitoring. Documentation should identify the radiofrequency technique and support treatment of uterine fibroids. The procedure has a 10-day global period, including related postoperative visits during that period. When it is performed with other procedures in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple-procedure reduction. Modifier 50 is inappropriate for this uterine procedure. Medicare does not pay an assistant at surgery, and co-surgeon and team-surgery billing are 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 58580

Across 109 of 109 payment localities, the office rate for 58580 runs from $2,267.69 in Arkansas to $3,659.62 in San Benito County, CA. Montana pays $2,617.88. The RVUs are the same everywhere; the geographic indexes change the dollars.

58580 in Montana vs other payment areas
  1. Montana · this page$2,617.88
  2. Los Angeles, CA · California$3,042.21+$424.33
  3. Washington, DC area · District of Columbia$3,052.15+$434.27
  4. Miami, FL · Florida$2,777.30+$159.42
  5. Chicago, IL · Illinois$2,684.95+$67.07
  6. Manhattan, NY · New York$3,036.62+$418.74
  7. Alaska · Alaska$2,868.98+$251.10

Other areas in Montana first, then benchmark localities. Bars start at $0.

Every other payment area

58580 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$2,307.27$332.19
ArkansasArkansas$2,267.69$328.73
ArizonaArizona$2,539.40$352.15
Bakersfield, CACalifornia$2,831.04$357.11
Chico, CACalifornia$2,827.54$353.62
El Centro, CACalifornia$2,827.75$353.82
Fresno, CACalifornia$2,827.54$353.62
Hanford, CACalifornia$2,827.54$353.62

58580 rates by state

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

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

$2,267.69

$3,243.58

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
58580 office rate range by state
State / territoryOffice rate rangeLocalities
AK$2,868.981
AL$2,307.271
AR$2,267.691
AZ$2,539.401
CA$2,827.54–$3,659.6229
CO$2,761.581
CT$2,811.671
DC$3,052.151
DE$2,586.851
FL$2,535.76–$2,777.303
GA$2,373.01–$2,664.462
GU$2,921.341
HI$2,921.341
IA$2,393.941
ID$2,408.801
IL$2,437.55–$2,714.814
IN$2,425.731
KS$2,372.611
KY$2,354.511
LA$2,346.92–$2,485.432
MA$2,737.42–$3,077.332
MD$2,645.02–$3,052.153
ME$2,414.97–$2,581.602
MI$2,419.57–$2,564.412
MN$2,656.721
MO$2,293.73–$2,505.643
MS$2,281.651
MT$2,617.881
NC$2,446.111
ND$2,593.361
NE$2,411.891
NH$2,708.801
NJ$2,846.81–$3,010.252
NM$2,431.921
NV$2,613.391
NY$2,488.57–$3,111.075
OH$2,414.561
OK$2,358.161
OR$2,596.29–$2,871.052
PA$2,423.66–$2,726.192
PR$2,643.101
RI$2,695.231
SC$2,433.781
SD$2,590.461
TN$2,385.691
TX$2,404.27–$2,749.538
UT$2,473.231
VA$2,565.98–$3,052.152
VI$2,643.101
VT$2,574.091
WA$2,735.23–$3,153.702
WI$2,490.951
WV$2,329.051
WY$2,607.191

See 58580 in every payment locality

How the 58580 rate is calculated

Each of 58580’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.

How the rate is built · 58580

RVUs × geographic indexes × conversion factor

Office or facility?

Work7.03

7.03 RVUs× 1.000 GPCI

Practice expense70.11

70.11 RVUs× 1.000 GPCI

Malpractice1.24

1.24 RVUs× 1.000 GPCI

Adjusted RVUs

78.3800

Conversion factor

$33.4009

Medicare rate

$2,617.96

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Montana inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

6,581

Code
58580
Physician work
7.03
Practice expense
70.11
Malpractice
1.24

GPCI2026.csv

71

Locality
Montana
Physician work
1.000
Practice expense
1.000
Malpractice
0.998
Office calculation for 58580 in Montana
ComponentRVULocality factorAdjusted
Physician work7.03× 1.0007.0300
Practice expense70.11× 1.00070.1100
Malpractice1.24× 0.9981.2375
Total RVUs78.3775
Conversion factor× 33.4009

Office rate, Montana$2617.88

Office: (7.03 × 1 + 70.11 × 1 + 1.24 × 0.998) × $33.4009 = $2617.88

Facility: (7.03 × 1 + 2.53 × 1 + 1.24 × 0.998) × $33.4009 = $360.65

Open 58580 in the RVU calculator

Payment rules and modifiers for 58580

58580 has a 10-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 58580

Fibroid ablation, transcervical radiofrequency

RuleCMS valueWhat it means
Global period010Minor procedure: the day of the procedure plus 10 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.80/0.10Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 58580

Fibroid ablation, transcervical radiofrequency

10-day global period ends

Oct 11, 2026

Covers Oct 1, 2026 through Oct 11, 2026 (11 days).

Visit on Oct 31, 2026

After the global period ends: visits and procedures are billed normally.

SurgeryVisit
Sep 28, 2026Oct 14, 2026

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

58580 without 51 · national office

$2,617.96

Fibroid ablation, transcervical radiofrequency

58580-51 · Second procedure: 50%

$1,308.98

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

Codes related to 58580

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

Codes related to 58580
CodeHow it relatesOffice range, Montana
Used instead
58561Myoma removal, hysteroscopic approachHysteroscopic removal of myomas is a different uterine-sparing treatment approach.No office rate
58545Laparoscopic myomectomy, limited fibroid burdenLaparoscopic myomectomy removes fibroids rather than ablating them transcervically.No office rate
58546Laparoscopic myomectomy, five or more or 250 g or greaterComplex laparoscopic myomectomy is an excisional alternative for fibroid treatment.No office rate

How 58580 has changed in Montana

58580 · Office / nonfacility

$2617.88

Effective 2026-10-01

The base rate is $17.34 higher than on 2025-10-01, moving from $2600.54 to $2617.88 (0.7%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release

  1. January 1, 2026

    RVU26A

    $2600.54changed to$2617.88

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 7.21 changed to 7.03
    • Practice expense RVU 72.14 changed to 70.11
    • Malpractice RVU 1.07 changed to 1.24
    • Malpractice GPCI 0.978 changed to 0.998

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $3098.19changed to$2600.54

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 85.14 changed to 72.14
    • Malpractice RVU 0.74 changed to 1.07

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $3047.62changed to$3098.19

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    No ratechanged to$3047.62

  5. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D, RVU17A, RVU17B, RVU17C, RVU17D, RVU18AR1, RVU18B, RVU18C, RVU18D, RVU19A, RVU19B, RVU19C, RVU19D, RVU20A, RVU20B, RVU20C, RVU20D, RVU21A, RVU21B, RVU21C, RVU21D, RVU22A, RVU22B, RVU22C, RVU22D, RVU23A, RVU23B, RVU23C, RVU23D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$2,617.88$360.65RVU26D
2026-07-01$2,617.88$360.65RVU26C
2026-04-01$2,617.88$360.65RVU26B
2026-01-01$2,617.88$360.65RVU26A
2025-10-01$2,600.54$392.90RVU25D
2025-07-01$2,600.54$392.90RVU25C
2025-04-01$2,600.54$392.90RVU25B
2025-01-01$2,600.54$392.90RVU25A
2024-10-01$3,098.19$397.58RVU24D
2024-07-01$3,098.19$397.58RVU24C
2024-04-01$3,098.19$397.58RVU24B
2024-03-09$3,098.19$397.58RVU24AR
2024-01-01$3,047.62$391.09RVU24A
2023-10-01Not in this releaseNot in this releaseRVU23D
2023-07-01Not in this releaseNot in this releaseRVU23C
2023-04-01Not in this releaseNot in this releaseRVU23B
2023-01-01Not in this releaseNot in this releaseRVU23A
2022-10-01Not in this releaseNot in this releaseRVU22D
2022-07-01Not in this releaseNot in this releaseRVU22C
2022-04-01Not in this releaseNot in this releaseRVU22B
2022-01-01Not in this releaseNot in this releaseRVU22A
2021-10-01Not in this releaseNot in this releaseRVU21D
2021-07-01Not in this releaseNot in this releaseRVU21C
2021-04-01Not in this releaseNot in this releaseRVU21B
2021-01-01Not in this releaseNot in this releaseRVU21A
2020-10-01Not in this releaseNot in this releaseRVU20D
2020-07-01Not in this releaseNot in this releaseRVU20C
2020-04-01Not in this releaseNot in this releaseRVU20B
2020-01-01Not in this releaseNot in this releaseRVU20A
2019-10-01Not in this releaseNot in this releaseRVU19D
2019-07-01Not in this releaseNot in this releaseRVU19C
2019-04-01Not in this releaseNot in this releaseRVU19B
2019-01-01Not in this releaseNot in this releaseRVU19A
2018-10-01Not in this releaseNot in this releaseRVU18D
2018-07-01Not in this releaseNot in this releaseRVU18C
2018-04-01Not in this releaseNot in this releaseRVU18B
2018-01-01Not in this releaseNot in this releaseRVU18AR1
2017-10-01Not in this releaseNot in this releaseRVU17D
2017-07-01Not in this releaseNot in this releaseRVU17C
2017-04-01Not in this releaseNot in this releaseRVU17B
2017-01-01Not in this releaseNot in this releaseRVU17A
2016-10-01Not in this releaseNot in this releaseRVU16D
2016-07-01Not in this releaseNot in this releaseRVU16C
2016-04-01Not in this releaseNot in this releaseRVU16B
2016-01-01Not in this releaseNot in this releaseRVU16A
2015-10-01Not in this releaseNot in this releaseRVU15D
2015-07-01Not in this releaseNot in this releaseRVU15C
2015-04-01Not in this releaseNot in this releaseRVU15B
2015-01-01Not in this releaseNot in this releaseRVU15A
2014-10-01Not in this releaseNot in this releaseRVU14D
2014-07-01Not in this releaseNot in this releaseRVU14C
2014-04-01Not in this releaseNot in this releaseRVU14B
2014-01-01Not in this releaseNot in this releaseRVU14A
2013-10-01Not in this releaseNot in this releaseRVU13D
2013-07-01Not in this releaseNot in this releaseRVU13C
2013-04-01Not in this releaseNot in this releaseRVU13B
2013-01-01Not in this releaseNot in this releaseRVU13AR

Price 58580 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

58580 billing questions

How is this different from hysteroscopic myomectomy code 58561?

Code 58580 describes transcervical radiofrequency ablation of fibroids. Code 58561 describes hysteroscopic removal of myomas; choose based on the technique actually performed.

Does this code include intraoperative ultrasound?

Yes. Intraoperative ultrasound guidance and monitoring are included in the procedure described by 58580.

Is the code reported once per fibroid?

The code covers ablation of one or more fibroids. Do not select units based on the number of fibroids treated.

Can modifier 50 be used?

No. Modifier 50 is inappropriate for this uterine procedure.

How does the global period affect postoperative visits?

Related postoperative visits during the 10-day global period are included in the procedure payment.

Can an assistant or co-surgeon be reported?

Medicare does not pay an assistant at surgery for this procedure. Co-surgeons and team surgery are not permitted.

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

Show the CMS file lines behind this rate
RVUs for 58580PPRRVU2026_Oct_nonQPP.csv, line 6,581 (RVU26D)
Geographic factors for MontanaGPCI2026.csv, line 71 (RVU26D)

Open CMS sourceHow we calculate rates

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