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CPT code 93564: Graft angiography, aortocoronary venous bypass grafts2026 Medicare rate & RVUs in King County, WA

Reports selective contrast imaging of aortocoronary venous bypass grafts during cardiac catheterization, such as graft assessment in a patient with prior CABG.

CMS RVU26DEffective Oct 1, 2026One payment locality

In King County, WA, Medicare pays $56.51 for 93564 in the office and $49.13 when it’s performed in a hospital or facility.

$56.51Office (non-facility)
$49.13Hospital or facility
+5.7%vs the national office rate ($53.44)

Check a contract rate as a % of Medicare · 93564 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 93564 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in King County, WA
  2. What 93564 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 93564 covers

During cardiac catheterization, the cardiologist selectively injects contrast into one or more aortocoronary venous bypass grafts to visualize the grafts and their connections. A common setting is evaluation of graft patency in a patient with prior coronary artery bypass surgery. This is an imaging injection service, not a graft intervention; the catheterization and any treatment are represented by their applicable codes.

Report 93564 only with a primary cardiac catheterization procedure, and only when selective graft opacification is performed. The record should identify the grafts injected and support that selective imaging was carried out and interpreted. This add-on is paid within the primary procedure’s global period. It is not reported as a stand-alone service. When multiple grafts are selectively imaged during the same catheterization, report the add-on for the service rather than treating each graft as a separate unit.

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 King County, WA compares for 93564

Across 109 of 109 payment localities, the office rate for 93564 runs from $47.61 in Wisconsin to $67.50 in Alaska. King County, WA pays $56.51. The RVUs are the same everywhere; the geographic indexes change the dollars.

93564 in King County, WA vs other payment areas
  1. King County, WA · this page$56.51
  2. Rest of Washington · Washington$52.69−$3.82
  3. Los Angeles, CA · California$54.49−$2.02
  4. Washington, DC area · District of Columbia$58.31+$1.80
  5. Miami, FL · Florida$65.69+$9.18
  6. Chicago, IL · Illinois$63.69+$7.18
  7. Manhattan, NY · New York$62.08+$5.57

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

Every other payment area

93564 in every other Medicare payment locality
Payment localityOfficeFacility
AlaskaAlaska$67.50$61.09
AlabamaAlabama$48.56$43.30
ArkansasArkansas$47.97$42.81
ArizonaArizona$51.95$46.13
Bakersfield, CACalifornia$52.26$45.67
Chico, CACalifornia$51.63$45.04
El Centro, CACalifornia$51.67$45.08
Fresno, CACalifornia$51.63$45.04

93564 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.

$47.61

$67.50

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

View every state and territory as a table
93564 office rate range by state
State / territoryOffice rate rangeLocalities
AK$67.501
AL$48.561
AR$47.971
AZ$51.951
CA$51.63–$59.0129
CO$52.951
CT$56.671
DC$58.311
DE$52.681
FL$56.76–$65.693
GA$53.58–$55.282
GU$51.901
HI$51.901
IA$47.761
ID$48.401
IL$56.69–$63.694
IN$48.591
KS$48.441
KY$51.421
LA$51.70–$53.762
MA$53.07–$56.362
MD$53.29–$58.313
ME$49.55–$50.502
MI$53.36–$58.282
MN$48.391
MO$51.54–$52.863
MS$49.721
MT$53.431
NC$49.841
ND$48.881
NE$47.711
NH$52.991
NJ$56.66–$58.052
NM$53.961
NV$52.171
NY$50.54–$64.505
OH$52.431
OK$50.411
OR$51.11–$53.382
PA$52.01–$56.032
PR$53.461
RI$53.651
SC$51.351
SD$48.341
TN$48.761
TX$51.78–$56.518
UT$51.921
VA$50.97–$58.312
VI$53.461
VT$49.521
WA$52.69–$56.512
WI$47.611
WV$55.131
WY$51.441

See 93564 in every payment locality

How the 93564 rate is calculated

Each of 93564’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 · 93564

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.00

1.00 RVUs× 1.000 GPCI

Practice expense0.37

0.37 RVUs× 1.000 GPCI

Malpractice0.23

0.23 RVUs× 1.000 GPCI

Adjusted RVUs

1.6000

Conversion factor

$33.4009

Medicare rate

$53.44

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

The exact King County, WA inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

12,134

Code
93564
Physician work
1.00
Practice expense
0.37
Malpractice
0.23

GPCI2026.csv

108

Locality
King County, WA
Physician work
1.050
Practice expense
1.227
Malpractice
0.817
Office calculation for 93564 in King County, WA
ComponentRVULocality factorAdjusted
Physician work1.00× 1.0501.0500
Practice expense0.37× 1.2270.4540
Malpractice0.23× 0.8170.1879
Total RVUs1.6919
Conversion factor× 33.4009

Office rate, King County, WA$56.51

Office: (1 × 1.05 + 0.37 × 1.227 + 0.23 × 0.817) × $33.4009 = $56.51

Facility: (1 × 1.05 + 0.19 × 1.227 + 0.23 × 0.817) × $33.4009 = $49.13

Open 93564 in the RVU calculator

Payment rules and modifiers for 93564

The CMS indicators that decide how 93564 is paid alongside other services.

CMS payment indicators · 93564

Graft angiography, aortocoronary venous bypass grafts

RuleCMS valueWhat it means
Global periodZZZAdd-on code: falls within the primary procedure’s global period.
Multiple procedures0No multiple-procedure reduction.
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/technical0Physician service: no professional/technical split.

Codes related to 93564

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

Codes related to 93564
CodeHow it relatesOffice range, King County, WA
Add-on codes
93455Coronary angiography, with bypass graft imagingPrimary coronary angiography procedure that includes bypass grafts, without right or left heart catheterization.$1,156.32
93457Cardiac catheterization, right heart, coronaries, bypass graftsPrimary right heart catheterization and coronary angiography procedure that includes bypass grafts.$1,407.86
93459Cardiac catheterization, left heart with bypass graftsPrimary left heart catheterization and coronary angiography procedure that includes bypass grafts.$1,280.14
93461Heart catheterization, bilateral heart and graft imagingPrimary combined right and left heart catheterization with coronary angiography including bypass grafts.$1,564.12
Same family
93563Coronary angiography, during congenital catheterizationRelated catheterization injection add-on for selective native coronary angiography.$53.90
93565Cardiac angiography, left ventricle or atriumRelated catheterization injection add-on for left ventricular or left atrial angiography.$27.84

How 93564 has changed in King County, WA

93564 · Office / nonfacility

$56.51

Effective 2026-10-01

The base rate is $1.21 higher than on 2025-10-01, moving from $55.30 to $56.51 (2.2%).

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

    $55.30changed to$56.51

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 1.03 changed to 1.00
    • Practice expense RVU 0.36 changed to 0.37
    • Work GPCI 1.043 changed to 1.050
    • Practice expense GPCI 1.220 changed to 1.227
    • Malpractice GPCI 0.853 changed to 0.817

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $56.79changed to$55.30

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 0.35 changed to 0.36
    • Malpractice RVU 0.24 changed to 0.23

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $55.86changed to$56.79

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $56.93changed to$55.86

    • Conversion factor 33.8872 changed to 32.7442
    • Malpractice RVU 0.23 changed to 0.24
    • Work GPCI 1.039 changed to 1.043
    • Practice expense GPCI 1.207 changed to 1.220
    • Malpractice GPCI 0.815 changed to 0.853

  5. January 1, 2023

    RVU23A

    $63.34changed to$56.93

    • Conversion factor 34.6062 changed to 33.8872
    • Work RVU 1.13 changed to 1.03
    • Practice expense RVU 0.39 changed to 0.35
    • Malpractice RVU 0.25 changed to 0.23
    • Work GPCI 1.036 changed to 1.039
    • Practice expense GPCI 1.194 changed to 1.207
    • Malpractice GPCI 0.776 changed to 0.815

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $63.87changed to$63.34

    • Conversion factor 34.8931 changed to 34.6062

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $66.53changed to$63.87

    • Conversion factor 36.0896 changed to 34.8931
    • Malpractice RVU 0.26 changed to 0.25
    • Work GPCI 1.031 changed to 1.036
    • Practice expense GPCI 1.170 changed to 1.194
    • Malpractice GPCI 0.854 changed to 0.776

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $66.99changed to$66.53

    • Conversion factor 36.0391 changed to 36.0896
    • Malpractice RVU 0.27 changed to 0.26
    • Work GPCI 1.027 changed to 1.031
    • Practice expense GPCI 1.146 changed to 1.170
    • Malpractice GPCI 0.931 changed to 0.854

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $66.58changed to$66.99

    • Conversion factor 35.9996 changed to 36.0391
    • Malpractice RVU 0.26 changed to 0.27

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $64.78changed to$66.58

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 0.40 changed to 0.39
    • Work GPCI 1.026 changed to 1.027
    • Practice expense GPCI 1.151 changed to 1.146
    • Malpractice GPCI 0.713 changed to 0.931

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $62.21changed to$64.78

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 0.39 changed to 0.40
    • Work GPCI 1.025 changed to 1.026
    • Practice expense GPCI 1.155 changed to 1.151
    • Malpractice GPCI 0.495 changed to 0.713

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $62.61changed to$62.21

    • Conversion factor 35.9335 changed to 35.8043
    • Malpractice RVU 0.27 changed to 0.26

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $62.30changed to$62.61

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $60.27changed to$62.30

    • Conversion factor 35.8228 changed to 35.7547
    • Malpractice RVU 0.11 changed to 0.27
    • Practice expense GPCI 1.150 changed to 1.155
    • Malpractice GPCI 0.688 changed to 0.495

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $58.66changed to$60.27

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 0.41 changed to 0.39
    • Practice expense GPCI 1.144 changed to 1.150
    • Malpractice GPCI 0.881 changed to 0.688

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $58.66

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$56.51$49.13RVU26D
2026-07-01$56.51$49.13RVU26C
2026-04-01$56.51$49.13RVU26B
2026-01-01$56.51$49.13RVU26A
2025-10-01$55.30$55.30RVU25D
2025-07-01$55.30$55.30RVU25C
2025-04-01$55.30$55.30RVU25B
2025-01-01$55.30$55.30RVU25A
2024-10-01$56.79$56.79RVU24D
2024-07-01$56.79$56.79RVU24C
2024-04-01$56.79$56.79RVU24B
2024-03-09$56.79$56.79RVU24AR
2024-01-01$55.86$55.86RVU24A
2023-10-01$56.93$56.93RVU23D
2023-07-01$56.93$56.93RVU23C
2023-04-01$56.93$56.93RVU23B
2023-01-01$56.93$56.93RVU23A
2022-10-01$63.34$63.34RVU22D
2022-07-01$63.34$63.34RVU22C
2022-04-01$63.34$63.34RVU22B
2022-01-01$63.34$63.34RVU22A
2021-10-01$63.87$63.87RVU21D
2021-07-01$63.87$63.87RVU21C
2021-04-01$63.87$63.87RVU21B
2021-01-01$63.87$63.87RVU21A
2020-10-01$66.53$66.53RVU20D
2020-07-01$66.53$66.53RVU20C
2020-04-01$66.53$66.53RVU20B
2020-01-01$66.53$66.53RVU20A
2019-10-01$66.99$66.99RVU19D
2019-07-01$66.99$66.99RVU19C
2019-04-01$66.99$66.99RVU19B
2019-01-01$66.99$66.99RVU19A
2018-10-01$66.58$66.58RVU18D
2018-07-01$66.58$66.58RVU18C
2018-04-01$66.58$66.58RVU18B
2018-01-01$66.58$66.58RVU18AR1
2017-10-01$64.78$64.78RVU17D
2017-07-01$64.78$64.78RVU17C
2017-04-01$64.78$64.78RVU17B
2017-01-01$64.78$64.78RVU17A
2016-10-01$62.21$62.21RVU16D
2016-07-01$62.21$62.21RVU16C
2016-04-01$62.21$62.21RVU16B
2016-01-01$62.21$62.21RVU16A
2015-10-01$62.61$62.61RVU15D
2015-07-01$62.61$62.61RVU15C
2015-04-01$62.30$62.30RVU15B
2015-01-01$62.30$62.30RVU15A
2014-10-01$60.27$60.27RVU14D
2014-07-01$60.27$60.27RVU14C
2014-04-01$60.27$60.27RVU14B
2014-01-01$60.27$60.27RVU14A
2013-10-01$58.66$58.66RVU13D
2013-07-01$58.66$58.66RVU13C
2013-04-01$58.66$58.66RVU13B
2013-01-01$58.66$58.66RVU13AR

Price 93564 for an earlier date of service

Where the King County, WA rate applies

King County, WA is a Medicare payment area, not a city. Our Census mapping connects it to 63 cities and communities in Washington. Some span more than one payment area; confirm with the service ZIP.

  • Seattle
  • Algona
  • Ames Lake
  • 93564 in Auburn · multiple payment areas
  • Baring
  • Beaux Arts Village
  • Bellevue
  • Black Diamond

Browse all communities in Washington

93564 billing questions

How does 93564 differ from 93563?

93564 captures selective imaging of aortocoronary venous bypass grafts. 93563 is for selective coronary angiography of the native coronary arteries.

Which primary procedure should accompany 93564?

Report it with the applicable cardiac catheterization code, such as 93459 for left heart catheterization with coronary angiography that includes bypass grafts. It is an add-on and cannot stand alone.

Do I report one unit for each graft?

No. The add-on represents selective opacification of one or more aortocoronary venous bypass grafts during the catheterization, rather than a separate unit for every graft.

What documentation supports 93564?

Document the selective graft imaging performed, including which bypass grafts were injected and the resulting imaging interpretation. The record should distinguish graft opacification from imaging of native coronary arteries.

Can 93564 be billed by itself?

No. It must be reported with a primary cardiac catheterization procedure and is paid within that procedure’s global period.

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 93564PPRRVU2026_Oct_nonQPP.csv, line 12,134 (RVU26D)
Geographic factors for King County, WAGPCI2026.csv, line 108 (RVU26D)

Open CMS sourceHow we calculate rates

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