CPT code 93457: Cardiac catheterization, right heart, coronaries, bypass grafts2026 Medicare rate & RVUs in Montana

Reports right-heart catheterization with coronary and bypass-graft angiography in one diagnostic session, including the associated imaging supervision and interpretation.

CMS RVU26DEffective Oct 1, 2026One payment locality3.1K Medicare services in 2024

In Montana, Medicare pays $1,193.33 for 93457 in the office.

$1,193.33Office (non-facility)
Not available in this settingHospital or facility
−0.0%vs the national office rate ($1,193.41)

Check a contract rate as a % of Medicare · 93457 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 93457 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Montana
  2. What 93457 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 93457 covers

An interventional cardiologist performs right-heart catheterization to measure pressures and, when obtained, oxygen saturation and cardiac output, while imaging the native coronary arteries and bypass grafts. A typical use is a diagnostic cath-lab evaluation of a patient with prior CABG when both right-sided hemodynamics and coronary or graft anatomy are needed, such as assessing ischemia alongside heart-failure or pulmonary-pressure findings. The code includes imaging supervision and interpretation for the angiographic work.

Choose 93457 when the documented session includes right-heart catheterization, coronary angiography, and bypass-graft angiography; coronary angiography without graft imaging is a different level, and left-heart catheterization changes code selection. The report should identify the catheterization measurements and the native-vessel and graft images interpreted. A 0-day global period includes same-day preoperative and postoperative care. Bill the global service without a component modifier, or use modifier 26 for interpretation or TC for equipment and staff. When multiple procedures occur in one session, the highest-valued procedure is paid in full and other procedures at 50%. Modifier 50 is inappropriate for this anatomy. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are 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 93457

Across 109 of 109 payment localities, the office rate for 93457 runs from $1,040.33 in Arkansas to $1,608.91 in San Benito County, CA. Montana pays $1,193.33. The RVUs are the same everywhere; the geographic indexes change the dollars.

93457 in Montana vs other payment areas
  1. Montana · this page$1,193.33
  2. Los Angeles, CA · California$1,358.07+$164.74
  3. Washington, DC area · District of Columbia$1,376.16+$182.83
  4. Miami, FL · Florida$1,299.59+$106.26
  5. Chicago, IL · Illinois$1,257.12+$63.79
  6. Manhattan, NY · New York$1,384.40+$191.07
  7. Alaska · Alaska$1,342.16+$148.83

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

Every other payment area

93457 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$1,057.52—
ArkansasArkansas$1,040.33—
ArizonaArizona$1,158.10—
Bakersfield, CACalifornia$1,269.71—
Chico, CACalifornia$1,266.03—
El Centro, CACalifornia$1,266.25—
Fresno, CACalifornia$1,266.03—
Hanford, CACalifornia$1,266.03—

93457 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.

$1,040.33

$1,437.47

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

View every state and territory as a table
93457 office rate range by state
State / territoryOffice rate rangeLocalities
AK$1,342.161
AL$1,057.521
AR$1,040.331
AZ$1,158.101
CA$1,266.03–$1,608.9129
CO$1,245.981
CT$1,278.901
DC$1,376.161
DE$1,178.811
FL$1,174.71–$1,299.593
GA$1,101.19–$1,217.922
GU$1,302.521
HI$1,302.521
IA$1,087.331
ID$1,095.371
IL$1,137.26–$1,257.124
IN$1,102.481
KS$1,081.821
KY$1,086.091
LA$1,084.27–$1,144.422
MA$1,237.30–$1,378.372
MD$1,203.13–$1,376.163
ME$1,101.99–$1,168.632
MI$1,117.98–$1,191.242
MN$1,189.191
MO$1,063.52–$1,148.723
MS$1,052.151
MT$1,193.331
NC$1,114.871
ND$1,167.031
NE$1,093.951
NH$1,226.111
NJ$1,292.19–$1,359.312
NM$1,124.911
NV$1,186.931
NY$1,133.58–$1,421.635
OH$1,112.611
OK$1,083.691
OR$1,176.49–$1,289.052
PA$1,114.47–$1,244.132
PR$1,203.011
RI$1,223.511
SC$1,115.851
SD$1,163.921
TN$1,087.951
TX$1,106.30–$1,242.898
UT$1,132.911
VA$1,164.49–$1,376.162
VI$1,203.011
VT$1,162.141
WA$1,235.05–$1,407.862
WI$1,123.491
WV$1,090.351
WY$1,181.861

See 93457 in every payment locality

How the 93457 rate is calculated

Each of 93457’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 · 93457

RVUs × geographic indexes × conversion factor

Office or facility?

Work6.47

6.47 RVUs× 1.000 GPCI

Practice expense27.93

27.93 RVUs× 1.000 GPCI

Malpractice1.33

1.33 RVUs× 1.000 GPCI

Adjusted RVUs

35.7300

Conversion factor

$33.4009

Medicare rate

$1,193.41

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

12,109

Code
93457
Physician work
6.47
Practice expense
27.93
Malpractice
1.33

GPCI2026.csv

71

Locality
Montana
Physician work
1.000
Practice expense
1.000
Malpractice
0.998
Office calculation for 93457 in Montana
ComponentRVULocality factorAdjusted
Physician work6.47× 1.0006.4700
Practice expense27.93× 1.00027.9300
Malpractice1.33× 0.9981.3273
Total RVUs35.7273
Conversion factor× 33.4009

Office rate, Montana$1193.33

Office: (6.47 × 1 + 27.93 × 1 + 1.33 × 0.998) × $33.4009 = $1193.33

Open 93457 in the RVU calculator

Payment rules and modifiers for 93457

The CMS indicators that decide how 93457 is paid alongside other services.

CMS payment indicators · 93457

Cardiac catheterization, right heart, coronaries, bypass grafts

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)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical1Diagnostic test with separate professional (26) and technical (TC) components.

What modifiers do to the payment

Modifier 26 · payment effect

With and without the modifier

93457 without 26 · national office

$1,193.41

Cardiac catheterization, right heart, coronaries, bypass grafts

93457-26 · Professional component

$341.02

Pays only the interpretation and report.

When to use modifier 26

How 93457 has changed in Montana

93457 · Office / nonfacility

$1193.33

Effective 2026-10-01

The base rate is $58.57 higher than on 2025-10-01, moving from $1134.76 to $1193.33 (5.2%).

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

    $1134.76changed to$1193.33

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 6.64 changed to 6.47
    • Practice expense RVU 27.17 changed to 27.93
    • Malpractice RVU 1.30 changed to 1.33
    • Malpractice GPCI 0.978 changed to 0.998

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $1206.05changed to$1134.76

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 28.31 changed to 27.17
    • Malpractice RVU 1.31 changed to 1.30

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $1186.36changed to$1206.05

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $1244.42changed to$1186.36

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 28.86 changed to 28.31
    • Malpractice RVU 1.25 changed to 1.31
  5. January 1, 2023

    RVU23A

    $1312.94changed to$1244.42

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 30.00 changed to 28.86
    • Malpractice RVU 1.33 changed to 1.25
    • Malpractice GPCI 0.977 changed to 0.978

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $1351.41changed to$1312.94

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 30.82 changed to 30.00
    • Malpractice RVU 1.30 changed to 1.33

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $1327.81changed to$1351.41

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 28.47 changed to 30.82
    • Malpractice RVU 1.29 changed to 1.30
    • Malpractice GPCI 1.304 changed to 0.977

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $1298.78changed to$1327.81

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 27.18 changed to 28.47
    • Malpractice RVU 1.36 changed to 1.29
    • Malpractice GPCI 1.631 changed to 1.304

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $1262.80changed to$1298.78

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 26.22 changed to 27.18

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $1240.59changed to$1262.80

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 25.97 changed to 26.22
    • Malpractice RVU 1.37 changed to 1.36
    • Malpractice GPCI 1.429 changed to 1.631

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $1300.25changed to$1240.59

    • Conversion factor 35.8043 changed to 35.8887
    • Work RVU 6.89 changed to 6.64
    • Practice expense RVU 27.66 changed to 25.97
    • Malpractice RVU 1.44 changed to 1.37
    • Malpractice GPCI 1.226 changed to 1.429

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $1302.07changed to$1300.25

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 27.58 changed to 27.66

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $1295.59changed to$1302.07

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $1288.28changed to$1295.59

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 27.36 changed to 27.58
    • Malpractice RVU 1.47 changed to 1.44
    • Malpractice GPCI 1.165 changed to 1.226

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $1318.34changed to$1288.28

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 30.16 changed to 27.36
    • Malpractice RVU 1.54 changed to 1.47
    • Malpractice GPCI 1.103 changed to 1.165

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $1318.34

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$1,193.33Not available in this settingRVU26D
2026-07-01$1,193.33Not available in this settingRVU26C
2026-04-01$1,193.33Not available in this settingRVU26B
2026-01-01$1,193.33Not available in this settingRVU26A
2025-10-01$1,134.76Not available in this settingRVU25D
2025-07-01$1,134.76Not available in this settingRVU25C
2025-04-01$1,134.76Not available in this settingRVU25B
2025-01-01$1,134.76Not available in this settingRVU25A
2024-10-01$1,206.05Not available in this settingRVU24D
2024-07-01$1,206.05Not available in this settingRVU24C
2024-04-01$1,206.05Not available in this settingRVU24B
2024-03-09$1,206.05Not available in this settingRVU24AR
2024-01-01$1,186.36Not available in this settingRVU24A
2023-10-01$1,244.42Not available in this settingRVU23D
2023-07-01$1,244.42Not available in this settingRVU23C
2023-04-01$1,244.42Not available in this settingRVU23B
2023-01-01$1,244.42Not available in this settingRVU23A
2022-10-01$1,312.94Not available in this settingRVU22D
2022-07-01$1,312.94Not available in this settingRVU22C
2022-04-01$1,312.94Not available in this settingRVU22B
2022-01-01$1,312.94Not available in this settingRVU22A
2021-10-01$1,351.41Not available in this settingRVU21D
2021-07-01$1,351.41Not available in this settingRVU21C
2021-04-01$1,351.41Not available in this settingRVU21B
2021-01-01$1,351.41Not available in this settingRVU21A
2020-10-01$1,327.81Not available in this settingRVU20D
2020-07-01$1,327.81Not available in this settingRVU20C
2020-04-01$1,327.81Not available in this settingRVU20B
2020-01-01$1,327.81Not available in this settingRVU20A
2019-10-01$1,298.78Not available in this settingRVU19D
2019-07-01$1,298.78Not available in this settingRVU19C
2019-04-01$1,298.78Not available in this settingRVU19B
2019-01-01$1,298.78Not available in this settingRVU19A
2018-10-01$1,262.80Not available in this settingRVU18D
2018-07-01$1,262.80Not available in this settingRVU18C
2018-04-01$1,262.80Not available in this settingRVU18B
2018-01-01$1,262.80Not available in this settingRVU18AR1
2017-10-01$1,240.59Not available in this settingRVU17D
2017-07-01$1,240.59Not available in this settingRVU17C
2017-04-01$1,240.59Not available in this settingRVU17B
2017-01-01$1,240.59Not available in this settingRVU17A
2016-10-01$1,300.25Not available in this settingRVU16D
2016-07-01$1,300.25Not available in this settingRVU16C
2016-04-01$1,300.25Not available in this settingRVU16B
2016-01-01$1,300.25Not available in this settingRVU16A
2015-10-01$1,302.07Not available in this settingRVU15D
2015-07-01$1,302.07Not available in this settingRVU15C
2015-04-01$1,295.59Not available in this settingRVU15B
2015-01-01$1,295.59Not available in this settingRVU15A
2014-10-01$1,288.28Not available in this settingRVU14D
2014-07-01$1,288.28Not available in this settingRVU14C
2014-04-01$1,288.28Not available in this settingRVU14B
2014-01-01$1,288.28Not available in this settingRVU14A
2013-10-01$1,318.34Not available in this settingRVU13D
2013-07-01$1,318.34Not available in this settingRVU13C
2013-04-01$1,318.34Not available in this settingRVU13B
2013-01-01$1,318.34Not available in this settingRVU13AR

Price 93457 for an earlier date of service

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

Browse all communities in Montana

93457 billing questions

Can I report 93457 when bypass grafts are not imaged?

No. The service includes right-heart catheterization with coronary and bypass-graft angiography; 93456 is the related level for right-heart catheterization with coronary angiography without graft imaging.

How does 93457 differ from 93459?

93457 includes right-heart catheterization, while 93459 includes left-heart catheterization with coronary and bypass-graft angiography. Select based on the catheterization actually performed.

When should I use modifiers 26 or TC?

Use modifier 26 for the professional interpretation or TC for the technical equipment and staff portion. Reporting the code without either modifier represents the global service.

How are other procedures in the same session paid?

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

Is modifier 50 appropriate for 93457?

No. The anatomy and service represented by this code make modifier 50 inappropriate.

What should the procedure report document?

Document the right-heart catheterization measurements and the angiographic work on both the native coronary arteries and bypass grafts, including the images interpreted.

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 93457PPRRVU2026_Oct_nonQPP.csv, line 12,109 (RVU26D)
Geographic factors for MontanaGPCI2026.csv, line 71 (RVU26D)

Open CMS sourceHow we calculate rates

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