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CPT code 58555: Hysteroscopy, diagnostic only2026 Medicare rate & RVUs in Mississippi

Reports hysteroscopic inspection of the uterine cavity for diagnostic evaluation when no biopsy, tissue removal, or other operative hysteroscopic service is performed.

CMS RVU26DEffective Oct 1, 2026One payment locality1.2K Medicare services in 2024

In Mississippi, Medicare pays $292.55 for 58555 in the office and $126.04 when it’s performed in a hospital or facility.

$292.55Office (non-facility)
$126.04Hospital or facility
−10.8%vs the national office rate ($328.00)

Check a contract rate as a % of Medicare · 58555 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 58555 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Mississippi
  2. What 58555 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 58555 covers

A gynecologist passes a hysteroscope through the cervix to inspect the endometrial cavity, for example when evaluating abnormal uterine bleeding or a suspected intracavitary abnormality. The procedure may be performed in an office or outpatient surgical setting. This code represents diagnostic visualization, not hysteroscopic sampling or treatment of a finding.

Report it when diagnostic inspection is the hysteroscopic service performed; document the indication, findings, and whether any operative work was done. Because it is a separate procedure, diagnostic inspection is generally not separately reported when it is part of a hysteroscopic biopsy or treatment. The 0-day global period includes same-day preoperative and postoperative care. For multiple procedures in one session, the highest-valued procedure is paid in full and other procedures are reduced by 50%. Bilateral adjustment is inappropriate. Assistant-at-surgery payment requires documented medical necessity; co-surgeons are permitted, while 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 Mississippi compares for 58555

Across 109 of 109 payment localities, the office rate for 58555 runs from $288.73 in Arkansas to $430.74 in San Benito County, CA. Mississippi pays $292.55. The RVUs are the same everywhere; the geographic indexes change the dollars.

58555 in Mississippi vs other payment areas
  1. Mississippi · this page$292.55
  2. Los Angeles, CA · California$367.98+$75.43
  3. Washington, DC area · District of Columbia$374.72+$82.17
  4. Miami, FL · Florida$360.28+$67.73
  5. Chicago, IL · Illinois$349.20+$56.65
  6. Manhattan, NY · New York$379.06+$86.51
  7. Alaska · Alaska$379.08+$86.53

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

Every other payment area

58555 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$293.12$123.91
ArkansasArkansas$288.73$122.61
ArizonaArizona$318.80$131.41
Bakersfield, CACalifornia$345.53$133.57
Chico, CACalifornia$344.26$132.30
El Centro, CACalifornia$344.33$132.38
Fresno, CACalifornia$344.26$132.30
Hanford, CACalifornia$344.26$132.30

58555 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.

$288.73

$387.50

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

View every state and territory as a table
58555 office rate range by state
State / territoryOffice rate rangeLocalities
AK$379.081
AL$293.121
AR$288.731
AZ$318.801
CA$344.26–$430.7429
CO$340.251
CT$350.341
DC$374.721
DE$324.191
FL$325.58–$360.283
GA$306.39–$334.912
GU$352.741
HI$352.741
IA$299.661
ID$301.931
IL$316.73–$349.204
IN$303.721
KS$298.771
KY$301.551
LA$301.28–$316.662
MA$338.34–$373.872
MD$330.35–$374.723
ME$304.17–$320.412
MI$310.20–$330.372
MN$323.991
MO$296.31–$317.143
MS$292.551
MT$327.971
NC$307.381
ND$319.071
NE$301.181
NH$335.421
NJ$353.77–$370.732
NM$312.191
NV$325.711
NY$312.19–$389.265
OH$308.391
OK$300.381
OR$322.63–$350.702
PA$308.57–$341.752
PR$330.271
RI$335.501
SC$308.511
SD$318.021
TN$300.401
TX$306.52–$339.618
UT$312.861
VA$319.72–$374.722
VI$330.271
VT$318.301
WA$337.54–$381.042
WI$308.071
WV$304.771
WY$324.091

See 58555 in every payment locality

How the 58555 rate is calculated

Each of 58555’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 · 58555

RVUs × geographic indexes × conversion factor

Office or facility?

Work2.58

2.58 RVUs× 1.000 GPCI

Practice expense6.79

6.79 RVUs× 1.000 GPCI

Malpractice0.45

0.45 RVUs× 1.000 GPCI

Adjusted RVUs

9.8200

Conversion factor

$33.4009

Medicare rate

$328.00

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

The exact Mississippi inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

6,566

Code
58555
Physician work
2.58
Practice expense
6.79
Malpractice
0.45

GPCI2026.csv

67

Locality
Mississippi
Physician work
1.000
Practice expense
0.861
Malpractice
0.739
Office calculation for 58555 in Mississippi
ComponentRVULocality factorAdjusted
Physician work2.58× 1.0002.5800
Practice expense6.79× 0.8615.8462
Malpractice0.45× 0.7390.3326
Total RVUs8.7587
Conversion factor× 33.4009

Office rate, Mississippi$292.55

Office: (2.58 × 1 + 6.79 × 0.861 + 0.45 × 0.739) × $33.4009 = $292.55

Facility: (2.58 × 1 + 1 × 0.861 + 0.45 × 0.739) × $33.4009 = $126.04

Open 58555 in the RVU calculator

Payment rules and modifiers for 58555

The CMS indicators that decide how 58555 is paid alongside other services.

CMS payment indicators · 58555

Hysteroscopy, diagnostic only

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is 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)0Not paid without supporting documentation.
Co-surgeons (62)2Permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

58555 without 51 · national office

$328.00

Hysteroscopy, diagnostic only

58555-51 · Second procedure: 50%

$164.00

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 58555

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

Codes related to 58555
CodeHow it relatesOffice range, Mississippi
Used instead
58558Hysteroscopy, biopsy or polyp removalUse for hysteroscopy that includes endometrial sampling or biopsy rather than diagnostic inspection alone.$1,109.35
58559Hysteroscopy, intrauterine adhesion lysisDescribes hysteroscopic treatment of intrauterine adhesions.No office rate
58560Hysteroscopy, uterine septum resectionDescribes hysteroscopic resection of a uterine septum.No office rate
58561Myoma removal, hysteroscopic approachDescribes hysteroscopic removal of uterine myomas.No office rate
58562Hysteroscopy, foreign-body removalDescribes hysteroscopic removal of a foreign body from the uterus.$358.42
58563Hysteroscopy, endometrial ablationDescribes hysteroscopic endometrial ablation rather than diagnostic inspection.$1,746.87

How 58555 has changed in Mississippi

58555 · Office / nonfacility

$292.55

Effective 2026-10-01

The base rate is $0.86 higher than on 2025-10-01, moving from $291.69 to $292.55 (0.3%).

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

    $291.69changed to$292.55

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 2.65 changed to 2.58
    • Practice expense RVU 7.05 changed to 6.79
    • Malpractice RVU 0.47 changed to 0.45
    • Practice expense GPCI 0.852 changed to 0.861
    • Malpractice GPCI 0.768 changed to 0.739

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $319.26changed to$291.69

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 7.75 changed to 7.05
    • Malpractice RVU 0.44 changed to 0.47

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $314.05changed to$319.26

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $326.71changed to$314.05

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 7.88 changed to 7.75
    • Practice expense GPCI 0.847 changed to 0.852
    • Malpractice GPCI 0.720 changed to 0.768

  5. January 1, 2023

    RVU23A

    $335.44changed to$326.71

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 8.03 changed to 7.88
    • Malpractice RVU 0.42 changed to 0.44
    • Practice expense GPCI 0.842 changed to 0.847
    • Malpractice GPCI 0.671 changed to 0.720

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $324.94changed to$335.44

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 7.57 changed to 8.03
    • Malpractice RVU 0.43 changed to 0.42

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $294.76changed to$324.94

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 6.19 changed to 7.57
    • Malpractice RVU 0.42 changed to 0.43
    • Practice expense GPCI 0.856 changed to 0.842
    • Malpractice GPCI 0.521 changed to 0.671

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $269.84changed to$294.76

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 5.42 changed to 6.19
    • Malpractice RVU 0.33 changed to 0.42
    • Practice expense GPCI 0.870 changed to 0.856
    • Malpractice GPCI 0.370 changed to 0.521

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $244.67changed to$269.84

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 4.63 changed to 5.42
    • Malpractice RVU 0.32 changed to 0.33

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $244.82changed to$244.67

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense GPCI 0.867 changed to 0.870
    • Malpractice GPCI 0.492 changed to 0.370

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $284.85changed to$244.82

    • Conversion factor 35.8043 changed to 35.8887
    • Work RVU 3.33 changed to 2.65
    • Practice expense RVU 5.07 changed to 4.63
    • Malpractice RVU 0.40 changed to 0.32
    • Practice expense GPCI 0.864 changed to 0.867
    • Malpractice GPCI 0.613 changed to 0.492

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $279.09changed to$284.85

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 4.83 changed to 5.07
    • Malpractice RVU 0.43 changed to 0.40

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $277.70changed to$279.09

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $280.08changed to$277.70

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 4.76 changed to 4.83
    • Malpractice RVU 0.54 changed to 0.43
    • Practice expense GPCI 0.865 changed to 0.864
    • Malpractice GPCI 0.687 changed to 0.613

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $282.78changed to$280.08

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 5.26 changed to 4.76
    • Malpractice RVU 0.56 changed to 0.54
    • Practice expense GPCI 0.866 changed to 0.865
    • Malpractice GPCI 0.761 changed to 0.687

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $282.78

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$292.55$126.04RVU26D
2026-07-01$292.55$126.04RVU26C
2026-04-01$292.55$126.04RVU26B
2026-01-01$292.55$126.04RVU26A
2025-10-01$291.69$137.35RVU25D
2025-07-01$291.69$137.35RVU25C
2025-04-01$291.69$137.35RVU25B
2025-01-01$291.69$137.35RVU25A
2024-10-01$319.26$140.30RVU24D
2024-07-01$319.26$140.30RVU24C
2024-04-01$319.26$140.30RVU24B
2024-03-09$319.26$140.30RVU24AR
2024-01-01$314.05$138.01RVU24A
2023-10-01$326.71$141.29RVU23D
2023-07-01$326.71$141.29RVU23C
2023-04-01$326.71$141.29RVU23B
2023-01-01$326.71$141.29RVU23A
2022-10-01$335.44$141.38RVU22D
2022-07-01$335.44$141.38RVU22C
2022-04-01$335.44$141.38RVU22B
2022-01-01$335.44$141.38RVU22A
2021-10-01$324.94$143.08RVU21D
2021-07-01$324.94$143.08RVU21C
2021-04-01$324.94$143.08RVU21B
2021-01-01$324.94$143.08RVU21A
2020-10-01$294.76$145.24RVU20D
2020-07-01$294.76$145.24RVU20C
2020-04-01$294.76$145.24RVU20B
2020-01-01$294.76$145.24RVU20A
2019-10-01$269.84$142.86RVU19D
2019-07-01$269.84$142.86RVU19C
2019-04-01$269.84$142.86RVU19B
2019-01-01$269.84$142.86RVU19A
2018-10-01$244.67$143.51RVU18D
2018-07-01$244.67$143.51RVU18C
2018-04-01$244.67$143.51RVU18B
2018-01-01$244.67$143.51RVU18AR1
2017-10-01$244.82$145.25RVU17D
2017-07-01$244.82$145.25RVU17C
2017-04-01$244.82$145.25RVU17B
2017-01-01$244.82$145.25RVU17A
2016-10-01$284.85$178.74RVU16D
2016-07-01$284.85$178.74RVU16C
2016-04-01$284.85$178.74RVU16B
2016-01-01$284.85$178.74RVU16A
2015-10-01$279.09$180.36RVU15D
2015-07-01$279.09$180.36RVU15C
2015-04-01$277.70$179.46RVU15B
2015-01-01$277.70$179.46RVU15A
2014-10-01$280.08$184.02RVU14D
2014-07-01$280.08$184.02RVU14C
2014-04-01$280.08$184.02RVU14B
2014-01-01$280.08$184.02RVU14A
2013-10-01$282.78$180.54RVU13D
2013-07-01$282.78$180.54RVU13C
2013-04-01$282.78$180.54RVU13B
2013-01-01$282.78$180.54RVU13AR

Price 58555 for an earlier date of service

Where the Mississippi rate applies

Mississippi is a Medicare payment area, not a city. Our Census mapping connects it to 427 cities and communities in Mississippi. Some span more than one payment area; confirm with the service ZIP.

  • Abbeville
  • Aberdeen
  • Ackerman
  • Agricola
  • Alcorn State University
  • Algoma
  • Alligator
  • Amory

Browse all communities in Mississippi

58555 billing questions

When should 58555 be chosen instead of 58558?

Use 58555 for diagnostic cavity inspection without sampling or tissue removal. When hysteroscopy includes endometrial sampling or biopsy, 58558 describes the operative service.

Can 58555 be reported with an operative hysteroscopy code?

The diagnostic inspection is generally integral to hysteroscopic biopsy or treatment and is not separately reported for the same procedure. Report the code describing the operative work performed.

What documentation supports 58555?

Document the clinical reason for evaluating the cavity, the hysteroscopic findings, and that no biopsy or therapeutic work was performed.

Should modifier 50 be appended?

No. CMS identifies bilateral adjustment as inappropriate for this code.

How are multiple procedures in the same session paid?

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

When is assistant-at-surgery payment allowed?

Payment for an assistant at surgery requires documentation of medical necessity. CMS permits co-surgeons but does not permit team surgery for this code.

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 58555PPRRVU2026_Oct_nonQPP.csv, line 6,566 (RVU26D)
Geographic factors for MississippiGPCI2026.csv, line 67 (RVU26D)

Open CMS sourceHow we calculate rates

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