CPT code 58943: Ovary and tube removal, for malignancy2026 Medicare rate & RVUs in California
Reports removal of one or both ovaries with associated fallopian tube removal when surgery is directed at ovarian, tubal, or primary peritoneal malignancy.
CMS doesn’t publish an office rate for 58943 in California.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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What 58943 covers
This operation removes one or both ovaries and the associated fallopian tube or tubes in surgery for ovarian, tubal, or primary peritoneal malignancy. Gynecologic oncologists most often perform it in a hospital operating room. The code identifies this malignancy-related removal, rather than ovarian cyst excision or a biopsy that samples tissue without removing the ovary and tube. The operative report should establish the malignancy-related indication and document which organs and sides were removed.
CMS assigns a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included. For additional procedures performed in the same session, the highest-valued procedure is paid in full and the others are subject to the standard multiple-procedure reduction. The descriptor and anatomy make modifier 50 inappropriate; do not use it to represent bilateral work. Assistant-at-surgery payment may be made. Co-surgeon payment requires supporting documentation, while team-surgery billing 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 58943 pays more and less in California
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
29 of 29 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Bakersfield, CA | Unavailable | $1,117.55 |
| Chico, CA | Unavailable | $1,105.55 |
| El Centro, CA | Unavailable | $1,106.28 |
| Fresno, CA | Unavailable | $1,105.55 |
| Hanford, CA | Unavailable | $1,105.55 |
| Los Angeles, CA | Unavailable | $1,169.81 |
| Madera, CA | Unavailable | $1,105.55 |
| Marin County, CA | Unavailable | $1,252.78 |
| Merced, CA | Unavailable | $1,105.55 |
| Modesto, CA | Unavailable | $1,105.55 |
| Napa, CA | Unavailable | $1,207.71 |
| Oxnard, CA | Unavailable | $1,155.17 |
| Redding, CA | Unavailable | $1,105.55 |
| Rest of California | Unavailable | $1,105.55 |
| Riverside, CA | Unavailable | $1,152.77 |
| Sacramento, CA | Unavailable | $1,140.88 |
| Salinas, CA | Unavailable | $1,136.31 |
| San Benito County, CA | Unavailable | $1,284.73 |
| San Diego, CA | Unavailable | $1,149.40 |
| San Francisco, CA | Unavailable | $1,247.78 |
| San Luis Obispo, CA | Unavailable | $1,120.47 |
| Santa Clara County, CA | Unavailable | $1,264.31 |
| Santa Cruz, CA | Unavailable | $1,149.39 |
| Santa Maria, CA | Unavailable | $1,136.83 |
| Santa Rosa, CA | Unavailable | $1,159.62 |
| Stockton, CA | Unavailable | $1,105.55 |
| Vallejo, CA | Unavailable | $1,200.51 |
| Visalia, CA | Unavailable | $1,105.55 |
| Yuba City, CA | Unavailable | $1,105.55 |
How the 58943 rate is calculated
Each of 58943’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 · 58943
RVUs × geographic indexes × conversion factor
Work19.03
19.03 RVUs× 1.000 GPCI
Practice expense10.39
10.39 RVUs× 1.000 GPCI
Malpractice4.40
4.40 RVUs× 1.000 GPCI
Adjusted RVUs
33.8200
Conversion factor
$33.4009
Medicare rate
$1,129.62
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 58943
58943 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 58943
Ovary and tube removal, for malignancy
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 2 | Paid. |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.12/0.74/0.14 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 58943
Ovary and tube removal, for malignancy
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.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
58943 without 51 · national facility
$1,129.62
Ovary and tube removal, for malignancy
58943-51 · Second procedure: 50%
$564.81
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%).
58943 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 58940OophorectomyPartial or total, one or both
- Use 58943 for malignancy-related removal that includes associated fallopian tube removal. Use 58940 for ovary removal without that specific malignancy-related tube-removal service.
- 58925Ovarian cystectomyCyst removal, ovary preserved
- 58925 is for ovarian cyst removal. It does not describe the malignancy-related ovary and tube removal captured by 58943.
- 58950Cancer resectionWith BSO and omentectomy
- 58950 represents a broader ovarian, tubal, or primary peritoneal malignancy resection service. Select it when the documented operation meets that broader scope rather than reporting only the service represented by 58943.
- 58900Ovarian biopsyTissue sampling only
- 58900 is for ovarian biopsy and tissue sampling. Choose 58943 when the operation removes the ovary or ovaries and associated tube or tubes for malignancy, rather than taking a diagnostic sample.
58943 billing questions
How is 58943 different from 58940?
58943 is for malignancy-related surgery that removes an ovary or ovaries along with the associated fallopian tube or tubes. 58940 describes ovary removal without that malignancy-related tube-removal detail.
Should modifier 50 be added when both sides are removed?
No. The descriptor and anatomy make modifier 50 inappropriate for this service.
What documentation supports reporting 58943?
The operative report should support the ovarian, tubal, or primary peritoneal malignancy indication and identify the ovary or ovaries and fallopian tube or tubes removed.
How does the 90-day global period affect postoperative visits?
The day-before preoperative visit and 90 days of related postoperative care are included in the global period.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be made. Co-surgeon payment requires supporting documentation; team-surgery billing is not permitted.
What happens when other procedures are performed in the same session?
The highest-valued procedure is paid in full, and the other procedures are subject to the standard multiple-procedure reduction.
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
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