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CPT 58958: Cancer debulkingMedicare rate & RVUs

Reports radical surgical debulking of recurrent ovarian, fallopian tube, or primary peritoneal malignancy, including extensive dissection and lymph node sampling.

CMS RVU26DEffective Oct 1, 2026109 payment localities60 Medicare services in 2024

Medicare pays $1,453.27 for 58958 nationally in a facility.

Medicare rate · 58958

Cancer debulking

Swap in your local Medicare rate.

Work RVUs
28.49
Total RVUs
43.51
Global days
090

National rate · 2026

$1,453.27

Facility setting, before claim adjustments.

See every locality for 58958 →

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 58958 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 58958 covers

A gynecologic oncologist reports this code for operative debulking of recurrent ovarian, fallopian tube, or primary peritoneal cancer when the procedure includes radical dissection and lymph node sampling. The operation may also include omentectomy, removal of both ovaries and fallopian tubes, and total abdominal hysterectomy. It is generally performed in a hospital operating room when recurrent disease requires substantial tumor removal and dissection.

Select the code based on the recurrent malignancy and the documented operative work, not simply the organs removed. The operative report should establish the recurrence, sites addressed, extent of dissection, lymph node sampling, and any included organ resections. This is a bilateral-priced code; modifier 50 does not increase Medicare payment. A 90-day global period includes the day-before preoperative visit and related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple procedure reduction. Assistant-at-surgery payment may be made; 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 58958 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

58958 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$1,339.06
Alaska*Unavailable$1,876.01
ArizonaUnavailable$1,418.89
ArkansasUnavailable$1,325.20
AtlantaUnavailable$1,494.99
AustinUnavailable$1,455.61
BakersfieldUnavailable$1,438.35
Baltimore/Surr. CntysUnavailable$1,532.46
BeaumontUnavailable$1,411.29
BrazoriaUnavailable$1,421.20

58958 rates by state

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

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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
58958 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 58958 rate is calculated

Each of 58958’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 · 58958

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 28.49Practice expense 10.03Malpractice 4.99

43.5100 adjusted RVUs×$33.4009 conversion factor=$1,453.27

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

Payment rules and modifiers for 58958

58958 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 58958

Cancer debulking

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 · 58958

Cancer debulking

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

58958 without 51 · national facility

$1,453.27

Cancer debulking

58958-51 · Second procedure: 50%

$726.64

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

58958 compared with similar codes

Compare codes

58958 vs 58951 vs 58954: national Medicare rates

Swap in your local Medicare rate.

  • 58958
    Cancer debulking · 28.49 wRVU
    —
  • 58951
    Ovarian cancer surgery · 23.65 wRVU
    —
  • 58954
    Cancer debulking · 36.2 wRVU
    —

How to choose

58951Ovarian cancer surgery
Use 58951 for ovarian malignancy resection with radical debulking and lymph node sampling in the circumstances described by that code. This code is distinguished by treatment of recurrent ovarian, tubal, or primary peritoneal disease.
58954Cancer debulking
58954 describes ovarian malignancy resection with radical debulking and pelvic and para-aortic lymphadenectomy. This code describes recurrent ovarian, tubal, or primary peritoneal malignancy.

Codes related to 58958

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

Codes related to 58958
CodeHow it relatesNational office range
Used instead
58951Ovarian cancer surgeryRadical debulking for ovarian malignancy when the disease is not coded as recurrent.No office rate
58953Cancer debulkingRadical debulking for ovarian malignancy with abdominal hysterectomy.No office rate
58954Cancer debulkingOvarian malignancy resection with radical debulking and pelvic and para-aortic lymphadenectomy.No office rate
58950Cancer resectionOvarian malignancy resection with bilateral salpingo-oophorectomy and omentectomy.No office rate

58958 billing questions

How does this differ from code 58957?

Both address recurrent ovarian, tubal, or primary peritoneal malignancy. Choose based on the operative service documented: this code describes radical debulking dissection that includes lymph node sampling, while 58957 describes extensive retroperitoneal dissection.

Can this be reported for a newly diagnosed ovarian malignancy?

This code is for recurrent ovarian, tubal, or primary peritoneal malignancy. Codes such as 58951 describe resection of ovarian malignancy with radical debulking work for a different disease circumstance.

Should modifier 50 be appended for bilateral work?

The code is already priced as bilateral under Medicare, so modifier 50 does not increase payment.

Are omentectomy, hysterectomy, and ovary removal separate services?

These may be performed as part of the debulking service described by this code. The operative report should identify which procedures were performed; do not assume each included procedure is separately reportable.

What documentation supports this code?

Document the recurrent malignancy, operative findings and sites treated, radical dissection, lymph node sampling, and any omentectomy, bilateral salpingo-oophorectomy, or hysterectomy performed.

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 subject to a reduction when performed in the same session.

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 58958PPRRVU2026_Oct_nonQPP.csv, line 6,618 (RVU26D)

Open CMS sourceHow we calculate rates

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