CPT code 58661: Adnexal removal, ovary and/or fallopian tube2026 Medicare rate & RVUs in Montana
Report this service when a surgeon uses laparoscopy to remove an ovary, fallopian tube, or both, in part or in full.
In Montana, Medicare pays $586.04 for 58661 in a facility. There’s no office rate.
Check a contract rate as a % of Medicare · 58661 nationwide
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 11 sections
What 58661 covers
A gynecologic surgeon uses laparoscopic instruments to remove an ovary, a fallopian tube, or both, partially or completely. Common clinical situations include removal of an adnexal mass, a diseased or torsed ovary, or a fallopian tube affected by an ectopic pregnancy. The procedure is typically performed in a hospital or ambulatory surgery center operating room. The operative report should identify the structures removed, the side, the extent of removal, and the laparoscopic approach.
Select this code for removal of adnexal structures, not simply for treating a tubal lesion or improving tubal patency. For bilateral surgery, CMS pays modifier 50 at 150%. Related postoperative visits during the 10-day global period are included. When related endoscopies are performed together, CMS applies endoscopy-family pricing. An assistant at surgery may be paid, and co-surgeons are permitted; 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 58661
Across 109 of 109 payment localities, the facility rate for 58661 runs from $530.75 in Nebraska to $748.56 in Alaska. Montana pays $586.04. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Montana · this page$586.04
- Los Angeles, CA · California$604.03+$17.99
- Washington, DC area · District of Columbia$640.05+$54.01
- Miami, FL · Florida$700.92+$114.88
- Chicago, IL · Illinois$681.63+$95.59
- Manhattan, NY · New York$675.08+$89.04
- Alaska · Alaska$748.56+$162.52
Other areas in Montana first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| AlabamaAlabama | — | $537.15 |
| ArkansasArkansas | — | $531.19 |
| ArizonaArizona | — | $571.44 |
| Bakersfield, CACalifornia | — | $579.34 |
| Chico, CACalifornia | — | $573.41 |
| El Centro, CACalifornia | — | $573.76 |
| Fresno, CACalifornia | — | $573.41 |
| Hanford, CACalifornia | — | $573.41 |
| Madera, CACalifornia | — | $573.41 |
| Merced, CACalifornia | — | $573.41 |
| Modesto, CACalifornia | — | $573.41 |
| Napa, CACalifornia | — | $620.68 |
| Oxnard, CACalifornia | — | $596.16 |
| Redding, CACalifornia | — | $573.41 |
| Rest of CaliforniaCalifornia | — | $573.41 |
| Riverside, CACalifornia | — | $596.33 |
| Sacramento, CACalifornia | — | $590.17 |
| Salinas, CACalifornia | — | $587.74 |
| San Diego, CACalifornia | — | $593.17 |
| Marin County, CACalifornia | — | $642.39 |
| San Francisco, CACalifornia | — | $639.97 |
| San Benito County, CACalifornia | — | $658.07 |
| Santa Clara County, CACalifornia | — | $648.18 |
| San Luis Obispo, CACalifornia | — | $579.66 |
| Santa Cruz, CACalifornia | — | $592.18 |
| Santa Maria, CACalifornia | — | $587.65 |
| Santa Rosa, CACalifornia | — | $597.39 |
| Stockton, CACalifornia | — | $573.41 |
| Vallejo, CACalifornia | — | $617.19 |
| Visalia, CACalifornia | — | $573.41 |
| Yuba City, CACalifornia | — | $573.41 |
| ColoradoColorado | — | $584.34 |
| ConnecticutConnecticut | — | $619.71 |
| DelawareDelaware | — | $579.11 |
| Fort Lauderdale, FLFlorida | — | $645.56 |
| Rest of FloridaFlorida | — | $615.58 |
| Atlanta, GAGeorgia | — | $603.92 |
| Rest of GeorgiaGeorgia | — | $584.15 |
| Hawaii, Guam, HIHawaii | — | $576.14 |
| IowaIowa | — | $530.94 |
| IdahoIdaho | — | $537.07 |
| East St. Louis, ILIllinois | — | $646.70 |
| Rest of IllinoisIllinois | — | $613.60 |
| Suburban Chicago, ILIllinois | — | $647.62 |
| IndianaIndiana | — | $539.01 |
| KansasKansas | — | $536.95 |
| KentuckyKentucky | — | $564.01 |
| New Orleans, LALouisiana | — | $587.29 |
| Rest of LouisianaLouisiana | — | $566.49 |
| Metropolitan Boston, MAMassachusetts | — | $621.71 |
| Rest of MassachusettsMassachusetts | — | $585.36 |
| Baltimore area, MDMaryland | — | $619.57 |
| Rest of MarylandMaryland | — | $585.79 |
| Rest of MaineMaine | — | $547.67 |
| Southern Maine, MEMaine | — | $558.63 |
| Detroit, MIMichigan | — | $629.91 |
| Rest of MichiganMichigan | — | $582.72 |
| MinnesotaMinnesota | — | $540.31 |
| Metropolitan Kansas City, MOMissouri | — | $575.69 |
| Metropolitan St. Louis, MOMissouri | — | $579.35 |
| Rest of MissouriMissouri | — | $564.29 |
| MississippiMississippi | — | $547.42 |
| North CarolinaNorth Carolina | — | $550.77 |
| North DakotaNorth Dakota | — | $543.93 |
| NebraskaNebraska | — | $530.75 |
| New HampshireNew Hampshire | — | $583.25 |
| Northern New JerseyNew Jersey | — | $637.56 |
| Rest of New JerseyNew Jersey | — | $621.24 |
| New MexicoNew Mexico | — | $588.43 |
| NevadaNevada | — | $574.45 |
| NYC suburbs and Long Island, NYNew York | — | $698.28 |
| Poughkeepsie and northern NYC suburbs, NYNew York | — | $631.57 |
| Queens, NYNew York | — | $667.74 |
| Rest of New YorkNew York | — | $557.79 |
| OhioOhio | — | $574.11 |
| OklahomaOklahoma | — | $554.77 |
| Portland, OROregon | — | $590.02 |
| Rest of OregonOregon | — | $564.47 |
| Metropolitan Philadelphia, PAPennsylvania | — | $612.53 |
| Rest of PennsylvaniaPennsylvania | — | $570.36 |
| Puerto RicoPuerto Rico | — | $586.72 |
| Rhode IslandRhode Island | — | $590.32 |
| South CarolinaSouth Carolina | — | $564.47 |
| South DakotaSouth Dakota | — | $538.95 |
| TennesseeTennessee | — | $540.02 |
| Austin, TXTexas | — | $587.24 |
| Beaumont, TXTexas | — | $568.06 |
| Brazoria, TXTexas | — | $572.18 |
| Dallas, TXTexas | — | $578.83 |
| Fort Worth, TXTexas | — | $578.30 |
| Galveston, TXTexas | — | $575.89 |
| Houston, TXTexas | — | $614.88 |
| Rest of TexasTexas | — | $571.87 |
| UtahUtah | — | $570.21 |
| VirginiaVirginia | — | $562.80 |
| Virgin Islands, VIUnited States Virgin Islands | — | $586.72 |
| VermontVermont | — | $549.59 |
| Rest of WashingtonWashington | — | $581.69 |
| King County, WAWashington | — | $624.64 |
| WisconsinWisconsin | — | $530.85 |
| West VirginiaWest Virginia | — | $597.82 |
| WyomingWyoming | — | $567.69 |
58661 rates by state
Office rate range in each state. Select a state to see its payment localities.
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.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | No published base rate | 1 |
| AL | No published base rate | 1 |
| AR | No published base rate | 1 |
| AZ | No published base rate | 1 |
| CA | No published base rate | 29 |
| CO | No published base rate | 1 |
| CT | No published base rate | 1 |
| DC | No published base rate | 1 |
| DE | No published base rate | 1 |
| FL | No published base rate | 3 |
| GA | No published base rate | 2 |
| GU | No published base rate | 1 |
| HI | No published base rate | 1 |
| IA | No published base rate | 1 |
| ID | No published base rate | 1 |
| IL | No published base rate | 4 |
| IN | No published base rate | 1 |
| KS | No published base rate | 1 |
| KY | No published base rate | 1 |
| LA | No published base rate | 2 |
| MA | No published base rate | 2 |
| MD | No published base rate | 3 |
| ME | No published base rate | 2 |
| MI | No published base rate | 2 |
| MN | No published base rate | 1 |
| MO | No published base rate | 3 |
| MS | No published base rate | 1 |
| MT | No published base rate | 1 |
| NC | No published base rate | 1 |
| ND | No published base rate | 1 |
| NE | No published base rate | 1 |
| NH | No published base rate | 1 |
| NJ | No published base rate | 2 |
| NM | No published base rate | 1 |
| NV | No published base rate | 1 |
| NY | No published base rate | 5 |
| OH | No published base rate | 1 |
| OK | No published base rate | 1 |
| OR | No published base rate | 2 |
| PA | No published base rate | 2 |
| PR | No published base rate | 1 |
| RI | No published base rate | 1 |
| SC | No published base rate | 1 |
| SD | No published base rate | 1 |
| TN | No published base rate | 1 |
| TX | No published base rate | 8 |
| UT | No published base rate | 1 |
| VA | No published base rate | 2 |
| VI | No published base rate | 1 |
| VT | No published base rate | 1 |
| WA | No published base rate | 2 |
| WI | No published base rate | 1 |
| WV | No published base rate | 1 |
| WY | No published base rate | 1 |
How the 58661 rate is calculated
Each of 58661’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 · 58661
RVUs × geographic indexes × conversion factor
Work11.07
11.07 RVUs× 1.000 GPCI
Practice expense4.35
4.35 RVUs× 1.000 GPCI
Malpractice2.13
2.13 RVUs× 1.000 GPCI
Adjusted RVUs
17.5500
Conversion factor
$33.4009
Medicare rate
$586.19
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
6,587
- Code
- 58661
- Physician work
- 11.07
- Practice expense
- 4.35
- Malpractice
- 2.13
GPCI2026.csv
71
- Locality
- Montana
- Physician work
- 1.000
- Practice expense
- 1.000
- Malpractice
- 0.998
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 11.07 | × 1.000 | 11.0700 |
| Practice expense | 4.35 | × 1.000 | 4.3500 |
| Malpractice | 2.13 | × 0.998 | 2.1257 |
| Total RVUs | 17.5457 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Montana$586.04
Facility: (11.07 × 1 + 4.35 × 1 + 2.13 × 0.998) × $33.4009 = $586.04
Payment rules and modifiers for 58661
58661 has a 10-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 58661
Adnexal removal, ovary and/or fallopian tube
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 010 | Minor procedure: the day of the procedure plus 10 days after are included. |
| Multiple procedures | 3 | Endoscopy family rules apply. |
| Bilateral (modifier 50) | 1 | Bilateral with modifier 50 pays 150% of the fee schedule amount. |
| Assistant at surgery (80/81/82/AS) | 2 | Paid. |
| Co-surgeons (62) | 2 | Permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.10/0.80/0.10 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 58661
Adnexal removal, ovary and/or fallopian tube
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.
What modifiers do to the payment
Modifier 50 · payment effect
With and without the modifier
58661 without 50 · national facility
$586.19
Adnexal removal, ovary and/or fallopian tube
58661-50 · Bilateral: 150%
$879.29
Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).
How 58661 has changed in Montana
58661 · Office / nonfacility
Rate unavailable
Effective 2026-10-01
A rate is unavailable in one of these releases, so a change cannot be calculated.
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
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | Not available in this setting | $586.04 | RVU26D |
| 2026-07-01 | Not available in this setting | $586.04 | RVU26C |
| 2026-04-01 | Not available in this setting | $586.04 | RVU26B |
| 2026-01-01 | Not available in this setting | $586.04 | RVU26A |
| 2025-10-01 | Not available in this setting | $634.25 | RVU25D |
| 2025-07-01 | Not available in this setting | $634.25 | RVU25C |
| 2025-04-01 | Not available in this setting | $634.25 | RVU25B |
| 2025-01-01 | Not available in this setting | $634.25 | RVU25A |
| 2024-10-01 | Not available in this setting | $652.69 | RVU24D |
| 2024-07-01 | Not available in this setting | $652.69 | RVU24C |
| 2024-04-01 | Not available in this setting | $652.69 | RVU24B |
| 2024-03-09 | Not available in this setting | $652.69 | RVU24AR |
| 2024-01-01 | Not available in this setting | $642.04 | RVU24A |
| 2023-10-01 | Not available in this setting | $661.42 | RVU23D |
| 2023-07-01 | Not available in this setting | $661.42 | RVU23C |
| 2023-04-01 | Not available in this setting | $661.42 | RVU23B |
| 2023-01-01 | Not available in this setting | $661.42 | RVU23A |
| 2022-10-01 | Not available in this setting | $669.19 | RVU22D |
| 2022-07-01 | Not available in this setting | $669.19 | RVU22C |
| 2022-04-01 | Not available in this setting | $669.19 | RVU22B |
| 2022-01-01 | Not available in this setting | $669.19 | RVU22A |
| 2021-10-01 | Not available in this setting | $668.84 | RVU21D |
| 2021-07-01 | Not available in this setting | $668.84 | RVU21C |
| 2021-04-01 | Not available in this setting | $668.84 | RVU21B |
| 2021-01-01 | Not available in this setting | $668.84 | RVU21A |
| 2020-10-01 | Not available in this setting | $700.40 | RVU20D |
| 2020-07-01 | Not available in this setting | $700.40 | RVU20C |
| 2020-04-01 | Not available in this setting | $700.40 | RVU20B |
| 2020-01-01 | Not available in this setting | $700.40 | RVU20A |
| 2019-10-01 | Not available in this setting | $705.59 | RVU19D |
| 2019-07-01 | Not available in this setting | $705.59 | RVU19C |
| 2019-04-01 | Not available in this setting | $705.59 | RVU19B |
| 2019-01-01 | Not available in this setting | $705.59 | RVU19A |
| 2018-10-01 | Not available in this setting | $700.99 | RVU18D |
| 2018-07-01 | Not available in this setting | $700.99 | RVU18C |
| 2018-04-01 | Not available in this setting | $700.99 | RVU18B |
| 2018-01-01 | Not available in this setting | $700.99 | RVU18AR1 |
| 2017-10-01 | Not available in this setting | $689.60 | RVU17D |
| 2017-07-01 | Not available in this setting | $689.60 | RVU17C |
| 2017-04-01 | Not available in this setting | $689.60 | RVU17B |
| 2017-01-01 | Not available in this setting | $689.60 | RVU17A |
| 2016-10-01 | Not available in this setting | $674.50 | RVU16D |
| 2016-07-01 | Not available in this setting | $674.50 | RVU16C |
| 2016-04-01 | Not available in this setting | $674.50 | RVU16B |
| 2016-01-01 | Not available in this setting | $674.50 | RVU16A |
| 2015-10-01 | Not available in this setting | $678.33 | RVU15D |
| 2015-07-01 | Not available in this setting | $678.33 | RVU15C |
| 2015-04-01 | Not available in this setting | $674.96 | RVU15B |
| 2015-01-01 | Not available in this setting | $674.96 | RVU15A |
| 2014-10-01 | Not available in this setting | $681.18 | RVU14D |
| 2014-07-01 | Not available in this setting | $681.18 | RVU14C |
| 2014-04-01 | Not available in this setting | $681.18 | RVU14B |
| 2014-01-01 | Not available in this setting | $681.18 | RVU14A |
| 2013-10-01 | Not available in this setting | $661.03 | RVU13D |
| 2013-07-01 | Not available in this setting | $661.03 | RVU13C |
| 2013-04-01 | Not available in this setting | $661.03 | RVU13B |
| 2013-01-01 | Not available in this setting | $661.03 | RVU13AR |
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
58661 billing questions
When is this code a better fit than 58662?
Use this code when the laparoscopic service removes an ovary or fallopian tube, in part or in full. Code 58662 concerns excision of lesions rather than removal of adnexal structures.
Does this code cover laparoscopic tubal sterilization?
No. Tubal sterilization that leaves the fallopian tube in place is represented by codes such as 58670 or 58671, depending on the technique.
How is bilateral removal handled?
CMS identifies this as a bilateral procedure: report modifier 50 for bilateral surgery, which is paid at 150%.
Are postoperative visits included?
Related postoperative visits during the 10-day global period are included in the procedure's global payment.
Can another laparoscopic procedure be reported at the same session?
A related endoscopic procedure may be reported when separately performed and supported by the operative documentation. CMS endoscopy-family pricing applies when related endoscopies are performed together.
Can an assistant or co-surgeon participate?
CMS permits payment for an assistant at surgery and permits co-surgeons for this code. Team surgery is 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
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