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Billing code 58940: OophorectomyMedicare rate & RVUs

Open removal of part or all of one or both ovaries for conditions such as torsion or benign ovarian disease when the operative work supports this procedure.

CMS RVU26DEffective Oct 1, 2026109 payment localities355 Medicare services in 2024

Medicare pays $515.38 for 58940 nationally in a facility.

Medicare rate · 58940

Oophorectomy

Swap in your local Medicare rate.

Work RVUs
8.01
Total RVUs
15.43
Global days
090

National rate · 2026

$515.38

Facility setting, before claim adjustments.

See every locality for 58940 → · Billed by an NP, PA or therapist? →

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 10 sections
  1. Medicare rate
  2. What 58940 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What 58940 covers

A gynecologic surgeon removes part or all of an ovary through an open abdominal operation. Typical situations include an ovary that cannot be preserved because of torsion or a benign ovarian lesion. The procedure may involve one or both ovaries and may be performed in a hospital operating room or another surgical facility.

Choose this code when ovarian tissue is removed, rather than when a cyst is excised while preserving the ovary, a biopsy is taken, or a distinct oncologic operation is performed. The operative report should identify the tissue removed, the indication, the approach, and any additional procedures. CMS prices the code as bilateral, so modifier 50 does not increase payment. It has a 90-day global period that includes the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, 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.

Where 58940 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

58940 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$467.16
Alaska*Unavailable$636.59
ArizonaUnavailable$501.39
ArkansasUnavailable$461.24
AtlantaUnavailable$530.46
AustinUnavailable$520.69
BakersfieldUnavailable$517.09
Baltimore/Surr. CntysUnavailable$546.90
BeaumontUnavailable$494.13
BrazoriaUnavailable$503.52

58940 rates by state

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

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

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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
58940 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

How the 58940 rate is calculated

Each of 58940’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 · 58940

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 8.01Practice expense 5.75Malpractice 1.67

15.4300 adjusted RVUs×$33.4009 conversion factor=$515.38

All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.

Payment rules and modifiers for 58940

58940 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 58940

Oophorectomy

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)2Already bilateral by definition: paid once at 100%.
Assistant at surgery (80/81/82/AS)2Paid.
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.12/0.74/0.14Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 58940

Oophorectomy

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24 Unrelated E/M visit by the same physician
  • 79 Unrelated procedure (starts its own global period)
  • 58 Staged, more extensive, or therapy procedure that was planned
  • 78 Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

58940 without 51 · national facility

$515.38

Oophorectomy

58940-51 · Second procedure: 50%

$257.69

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

58940 compared with similar codes

Compare codes

58940 vs 58920 vs 58925 vs 58661 vs 58943: national Medicare rates

Swap in your local Medicare rate.

  • 58940
    Oophorectomy · 8.01 wRVU
    —
  • 58920
    Ovarian surgery · 11.65 wRVU
    —
  • 58925
    Ovarian cystectomy · 12.12 wRVU
    —
  • 58661
    Adnexal removal · 11.07 wRVU
    —
  • 58943
    Ovary and tube removal · 19.03 wRVU
    —

How to choose

58920Ovarian surgery
58920 is used for partial ovarian removal. Choose 58940 when the documented operation matches its partial-or-total oophorectomy service.
58925Ovarian cystectomy
58925 describes removal of an ovarian cyst, generally with ovarian tissue preserved; 58940 applies when part or all of the ovary is removed.
58661Adnexal removal
58661 applies to laparoscopic removal of adnexal structures. 58940 describes the open operation.
58943Ovary and tube removal
58943 is for ovarian removal as part of a more extensive operation for ovarian malignancy; 58940 is not that oncologic operation.

Codes related to 58940

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

Codes related to 58940
CodeHow it relatesNational office range
Same family
58920Ovarian surgeryPartial ovarian removal; compare the specific extent and type of tissue excised.No office rate
Used instead
58925Ovarian cystectomyFor ovarian cyst removal when the ovary is preserved.No office rate
58900Ovarian biopsyFor ovarian tissue sampling rather than removal of part or all of an ovary.No office rate
58661Adnexal removalFor laparoscopic removal of adnexal structures when the approach and work fit that code.No office rate
58943Ovary and tube removalFor ovarian removal performed as part of the specified operation for ovarian malignancy.No office rate
58950Cancer resectionFor ovarian malignancy resection when the documented oncologic operation fits that code.No office rate

58940 billing questions

How does 58940 differ from laparoscopic removal of an ovary?

58940 describes open ovarian removal. For laparoscopic removal of adnexal structures, consider 58661 when the documented procedure and approach fit that code.

Should modifier 50 be added when both ovaries are removed?

CMS already prices 58940 as bilateral, so modifier 50 does not increase payment. Document whether one or both ovaries were removed.

When is 58940 appropriate instead of ovarian cyst removal?

Use 58940 when part or all of the ovary is removed. If the surgeon removes an ovarian cyst while preserving the ovary, compare 58925.

What postoperative care is included in the global period?

The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.

Can an assistant or co-surgeon be reported?

An assistant at surgery may be paid. Co-surgeons are paid only with supporting documentation; team surgery is not permitted.

How are other procedures in the same session paid?

Under the standard multiple procedure reduction, the highest-valued procedure is paid in full and other procedures are paid at 50%.

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 58940PPRRVU2026_Oct_nonQPP.csv, line 6,610 (RVU26D)

Open CMS sourceHow we calculate rates

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