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CPT code 93455: Coronary angiography, with bypass graft imaging2026 Medicare rate & RVUs in Connecticut

Reports coronary angiography with imaging of bypass grafts, typically during evaluation of coronary disease in a patient with prior bypass surgery.

CMS RVU26DEffective Oct 1, 2026One payment locality17.4K Medicare services in 2024

In Connecticut, Medicare pays $1,049.70 for 93455 in the office.

$1,049.70Office (non-facility)
Not available in this settingHospital or facility
+7.2%vs the national office rate ($979.31)

Check a contract rate as a % of Medicare · 93455 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 93455 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Connecticut
  2. What 93455 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 93455 covers

This service evaluates the native coronary arteries and surgically created bypass grafts using catheter-based contrast injections and imaging. It is commonly performed by a cardiologist in a cardiac catheterization laboratory when a patient with prior coronary artery bypass surgery needs diagnostic assessment of coronary blood flow or graft patency. Aortography may be included when performed as part of the graft assessment.

Report 93455 when the documented study includes coronary angiography and bypass graft angiography, without adding a left-heart catheterization service. The procedure report should identify the vessels and grafts studied, the imaging performed, and the interpreting physician’s findings. Medicare recognizes professional interpretation and technical services separately with modifiers 26 and TC; billing without either modifier represents the global service. The code has a 0-day global period, so same-day preoperative and postoperative care is included. For multiple procedures in one session, the highest-valued procedure is paid in full and others at 50%. 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 Connecticut compares for 93455

Across 109 of 109 payment localities, the office rate for 93455 runs from $853.12 in Arkansas to $1,322.27 in San Benito County, CA. Connecticut pays $1,049.70. The RVUs are the same everywhere; the geographic indexes change the dollars.

93455 in Connecticut vs other payment areas
  1. Connecticut · this page$1,049.70
  2. Los Angeles, CA · California$1,115.33+$65.63
  3. Washington, DC area · District of Columbia$1,129.92+$80.22
  4. Miami, FL · Florida$1,066.08+$16.38
  5. Chicago, IL · Illinois$1,031.09−$18.61
  6. Manhattan, NY · New York$1,136.37+$86.67
  7. Alaska · Alaska$1,099.40+$49.70

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

Every other payment area

93455 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$867.30—
ArkansasArkansas$853.12—
ArizonaArizona$950.22—
Bakersfield, CACalifornia$1,042.49—
Chico, CACalifornia$1,039.51—
El Centro, CACalifornia$1,039.69—
Fresno, CACalifornia$1,039.51—
Hanford, CACalifornia$1,039.51—

93455 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.

$853.12

$1,180.89

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

View every state and territory as a table
93455 office rate range by state
State / territoryOffice rate rangeLocalities
AK$1,099.401
AL$867.301
AR$853.121
AZ$950.221
CA$1,039.51–$1,322.2729
CO$1,022.821
CT$1,049.701
DC$1,129.921
DE$967.281
FL$963.54–$1,066.083
GA$902.98–$999.422
GU$1,069.741
HI$1,069.741
IA$892.041
ID$898.631
IL$932.56–$1,031.094
IN$904.501
KS$887.421
KY$890.681
LA$889.15–$938.742
MA$1,015.61–$1,131.972
MD$987.33–$1,129.923
ME$904.01–$959.072
MI$916.90–$977.082
MN$976.271
MO$871.99–$942.383
MS$862.751
MT$979.241
NC$914.641
ND$957.891
NE$897.521
NH$1,006.411
NJ$1,060.63–$1,115.972
NM$922.581
NV$974.061
NY$930.06–$1,166.965
OH$912.541
OK$888.781
OR$965.52–$1,058.412
PA$914.12–$1,020.992
PR$987.251
RI$1,004.131
SC$915.321
SD$955.361
TN$892.461
TX$907.37–$1,020.268
UT$929.381
VA$955.60–$1,129.922
VI$987.251
VT$953.791
WA$1,013.79–$1,156.322
WI$921.971
WV$893.871
WY$969.941

See 93455 in every payment locality

How the 93455 rate is calculated

Each of 93455’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 · 93455

RVUs × geographic indexes × conversion factor

Office or facility?

Work5.16

5.16 RVUs× 1.000 GPCI

Practice expense23.08

23.08 RVUs× 1.000 GPCI

Malpractice1.08

1.08 RVUs× 1.000 GPCI

Adjusted RVUs

29.3200

Conversion factor

$33.4009

Medicare rate

$979.31

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

The exact Connecticut inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

12,103

Code
93455
Physician work
5.16
Practice expense
23.08
Malpractice
1.08

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Office calculation for 93455 in Connecticut
ComponentRVULocality factorAdjusted
Physician work5.16× 1.0205.2632
Practice expense23.08× 1.07724.8572
Malpractice1.08× 1.2101.3068
Total RVUs31.4272
Conversion factor× 33.4009

Office rate, Connecticut$1049.70

Office: (5.16 × 1.02 + 23.08 × 1.077 + 1.08 × 1.21) × $33.4009 = $1049.70

Open 93455 in the RVU calculator

Payment rules and modifiers for 93455

The CMS indicators that decide how 93455 is paid alongside other services.

CMS payment indicators · 93455

Coronary angiography, with bypass graft imaging

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

93455 without 26 · national office

$979.31

Coronary angiography, with bypass graft imaging

93455-26 · Professional component

$271.88

Pays only the interpretation and report.

When to use modifier 26

Codes related to 93455

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

Codes related to 93455
CodeHow it relatesOffice range, Connecticut
Used instead
93454Coronary angiography, without graft or left-heart catheterizationCoronary angiography without bypass graft imaging.$941.02
93457Cardiac catheterization, right heart, coronaries, bypass graftsAdds right-heart catheterization to coronary and bypass graft angiography.$1,278.90
93459Cardiac catheterization, left heart with bypass graftsAdds left-heart catheterization to coronary and bypass graft angiography.$1,165.22
93461Heart catheterization, bilateral heart and graft imagingIncludes right- and left-heart catheterization with coronary and bypass graft angiography.$1,423.72

How 93455 has changed in Connecticut

93455 · Office / nonfacility

$1049.70

Effective 2026-10-01

The base rate is $39.49 higher than on 2025-10-01, moving from $1010.21 to $1049.70 (3.9%).

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

    $1010.21changed to$1049.70

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 5.29 changed to 5.16
    • Practice expense RVU 22.52 changed to 23.08
    • Malpractice RVU 1.04 changed to 1.08
    • Work GPCI 1.022 changed to 1.020
    • Practice expense GPCI 1.091 changed to 1.077
    • Malpractice GPCI 1.207 changed to 1.210

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $1073.82changed to$1010.21

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 23.44 changed to 22.52
    • Malpractice RVU 1.06 changed to 1.04

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $1056.29changed to$1073.82

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $1113.78changed to$1056.29

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 23.90 changed to 23.44
    • Malpractice RVU 1.01 changed to 1.06
    • Work GPCI 1.030 changed to 1.022
    • Practice expense GPCI 1.102 changed to 1.091
    • Malpractice GPCI 1.070 changed to 1.207

  5. January 1, 2023

    RVU23A

    $1180.24changed to$1113.78

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 24.81 changed to 23.90
    • Malpractice RVU 1.05 changed to 1.01
    • Work GPCI 1.037 changed to 1.030
    • Practice expense GPCI 1.114 changed to 1.102
    • Malpractice GPCI 0.934 changed to 1.070

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $1209.97changed to$1180.24

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 25.34 changed to 24.81
    • Malpractice RVU 1.03 changed to 1.05

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $1168.62changed to$1209.97

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 23.21 changed to 25.34
    • Malpractice RVU 1.01 changed to 1.03
    • Work GPCI 1.029 changed to 1.037
    • Practice expense GPCI 1.113 changed to 1.114
    • Malpractice GPCI 1.094 changed to 0.934

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $1136.03changed to$1168.62

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 22.26 changed to 23.21
    • Malpractice RVU 1.09 changed to 1.01
    • Work GPCI 1.021 changed to 1.029
    • Practice expense GPCI 1.112 changed to 1.113
    • Malpractice GPCI 1.255 changed to 1.094

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $1106.71changed to$1136.03

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 21.57 changed to 22.26
    • Malpractice RVU 1.08 changed to 1.09

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $1098.71changed to$1106.71

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 21.36 changed to 21.57
    • Work GPCI 1.023 changed to 1.021
    • Practice expense GPCI 1.117 changed to 1.112
    • Malpractice GPCI 1.244 changed to 1.255

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $1172.61changed to$1098.71

    • Conversion factor 35.8043 changed to 35.8887
    • Work RVU 5.54 changed to 5.29
    • Practice expense RVU 22.88 changed to 21.36
    • Malpractice RVU 1.16 changed to 1.08
    • Work GPCI 1.024 changed to 1.023
    • Practice expense GPCI 1.121 changed to 1.117
    • Malpractice GPCI 1.232 changed to 1.244

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $1177.28changed to$1172.61

    • Conversion factor 35.9335 changed to 35.8043
    • Malpractice RVU 1.17 changed to 1.16

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $1171.43changed to$1177.28

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $1160.58changed to$1171.43

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 22.62 changed to 22.88
    • Malpractice RVU 1.20 changed to 1.17
    • Practice expense GPCI 1.116 changed to 1.121
    • Malpractice GPCI 1.234 changed to 1.232

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $1186.27changed to$1160.58

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 24.91 changed to 22.62
    • Malpractice RVU 1.25 changed to 1.20
    • Practice expense GPCI 1.110 changed to 1.116
    • Malpractice GPCI 1.235 changed to 1.234

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $1186.27

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$1,049.70Not available in this settingRVU26D
2026-07-01$1,049.70Not available in this settingRVU26C
2026-04-01$1,049.70Not available in this settingRVU26B
2026-01-01$1,049.70Not available in this settingRVU26A
2025-10-01$1,010.21Not available in this settingRVU25D
2025-07-01$1,010.21Not available in this settingRVU25C
2025-04-01$1,010.21Not available in this settingRVU25B
2025-01-01$1,010.21Not available in this settingRVU25A
2024-10-01$1,073.82Not available in this settingRVU24D
2024-07-01$1,073.82Not available in this settingRVU24C
2024-04-01$1,073.82Not available in this settingRVU24B
2024-03-09$1,073.82Not available in this settingRVU24AR
2024-01-01$1,056.29Not available in this settingRVU24A
2023-10-01$1,113.78Not available in this settingRVU23D
2023-07-01$1,113.78Not available in this settingRVU23C
2023-04-01$1,113.78Not available in this settingRVU23B
2023-01-01$1,113.78Not available in this settingRVU23A
2022-10-01$1,180.24Not available in this settingRVU22D
2022-07-01$1,180.24Not available in this settingRVU22C
2022-04-01$1,180.24Not available in this settingRVU22B
2022-01-01$1,180.24Not available in this settingRVU22A
2021-10-01$1,209.97Not available in this settingRVU21D
2021-07-01$1,209.97Not available in this settingRVU21C
2021-04-01$1,209.97Not available in this settingRVU21B
2021-01-01$1,209.97Not available in this settingRVU21A
2020-10-01$1,168.62Not available in this settingRVU20D
2020-07-01$1,168.62Not available in this settingRVU20C
2020-04-01$1,168.62Not available in this settingRVU20B
2020-01-01$1,168.62Not available in this settingRVU20A
2019-10-01$1,136.03Not available in this settingRVU19D
2019-07-01$1,136.03Not available in this settingRVU19C
2019-04-01$1,136.03Not available in this settingRVU19B
2019-01-01$1,136.03Not available in this settingRVU19A
2018-10-01$1,106.71Not available in this settingRVU18D
2018-07-01$1,106.71Not available in this settingRVU18C
2018-04-01$1,106.71Not available in this settingRVU18B
2018-01-01$1,106.71Not available in this settingRVU18AR1
2017-10-01$1,098.71Not available in this settingRVU17D
2017-07-01$1,098.71Not available in this settingRVU17C
2017-04-01$1,098.71Not available in this settingRVU17B
2017-01-01$1,098.71Not available in this settingRVU17A
2016-10-01$1,172.61Not available in this settingRVU16D
2016-07-01$1,172.61Not available in this settingRVU16C
2016-04-01$1,172.61Not available in this settingRVU16B
2016-01-01$1,172.61Not available in this settingRVU16A
2015-10-01$1,177.28Not available in this settingRVU15D
2015-07-01$1,177.28Not available in this settingRVU15C
2015-04-01$1,171.43Not available in this settingRVU15B
2015-01-01$1,171.43Not available in this settingRVU15A
2014-10-01$1,160.58Not available in this settingRVU14D
2014-07-01$1,160.58Not available in this settingRVU14C
2014-04-01$1,160.58Not available in this settingRVU14B
2014-01-01$1,160.58Not available in this settingRVU14A
2013-10-01$1,186.27Not available in this settingRVU13D
2013-07-01$1,186.27Not available in this settingRVU13C
2013-04-01$1,186.27Not available in this settingRVU13B
2013-01-01$1,186.27Not available in this settingRVU13AR

Price 93455 for an earlier date of service

Where the Connecticut rate applies

Connecticut is a Medicare payment area, not a city. Our Census mapping connects it to 215 cities and communities in Connecticut. Some span more than one payment area; confirm with the service ZIP.

  • Ansonia
  • Ball Pond
  • Baltic
  • Bantam
  • Bethel
  • Bethlehem Village
  • Bigelow Corners
  • Blue Hills

Browse all communities in Connecticut

93455 billing questions

When should 93455 be chosen over 93454?

Use 93455 when the diagnostic study includes bypass graft angiography along with coronary angiography. Use 93454 when coronary angiography is performed without graft imaging.

Does 93455 include left-heart catheterization?

No. If left-heart catheterization is also performed with coronary and bypass graft angiography, compare the documentation with 93459.

Can the professional and technical services be billed separately?

Yes. Modifier 26 identifies the professional interpretation, and modifier TC identifies the technical service. Without either modifier, the claim represents the global service.

How does Medicare handle multiple procedures in the same session?

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

What documentation supports reporting 93455?

The procedure report should show coronary imaging and bypass graft imaging, identify the vessels or grafts evaluated, and include the interpreting physician’s findings.

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 93455PPRRVU2026_Oct_nonQPP.csv, line 12,103 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)

Open CMS sourceHow we calculate rates

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