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CPT code 93566: Chamber angiography, right atrium or ventricle2026 Medicare rate & RVUs in Washington, DC area

Reports selective angiography of the right atrium or right ventricle performed during cardiac catheterization, with imaging supervision, interpretation, and reporting.

CMS RVU26DEffective Oct 1, 2026One payment locality166 Medicare services in 2024

In Washington, DC area, Medicare pays $27.70 for 93566 in the office and $24.16 when it’s performed in a hospital or facility.

$27.70Office (non-facility)
$24.16Hospital or facility
+9.1%vs the national office rate ($25.38)

Check a contract rate as a % of Medicare · 93566 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 93566 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Washington, DC area
  2. What 93566 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 93566 covers

This add-on describes selective contrast imaging of the right atrium or right ventricle during cardiac catheterization. A cardiologist or other physician performing the catheterization may use it to evaluate right-sided chamber anatomy, such as when assessing a congenital or structural abnormality. The code covers the injection and its imaging supervision, interpretation, and report; routine catheter placement and pressure measurements alone do not describe this angiographic service.

Report 93566 only with an eligible primary cardiac catheterization procedure, not as a standalone service. The record should identify the selectively imaged chamber and support that a contrast injection and angiographic study were performed, with the findings documented. CMS treats this add-on as paid within the primary procedure's global period. The imaging supervision, interpretation, and report are part of this injection service.

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 Washington, DC area compares for 93566

Across 109 of 109 payment localities, the office rate for 93566 runs from $23.19 in Arkansas to $32.78 in Alaska. Washington, DC area pays $27.70. The RVUs are the same everywhere; the geographic indexes change the dollars.

93566 in Washington, DC area vs other payment areas
  1. Washington, DC area · this page$27.70
  2. Los Angeles, CA · California$26.32−$1.38
  3. Miami, FL · Florida$29.73+$2.03
  4. Chicago, IL · Illinois$28.99+$1.29
  5. Manhattan, NY · New York$29.03+$1.33
  6. Alaska · Alaska$32.78+$5.08
  7. Alabama · Alabama$23.43−$4.27

Other areas in District of Columbia first, then benchmark localities. Bars start at $0.

Every other payment area

93566 in every other Medicare payment locality
Payment localityOfficeFacility
ArkansasArkansas$23.19$20.61
ArizonaArizona$24.80$21.89
Bakersfield, CACalifornia$25.26$21.97
Chico, CACalifornia$25.03$21.74
El Centro, CACalifornia$25.05$21.75
Fresno, CACalifornia$25.03$21.74
Hanford, CACalifornia$25.03$21.74
Madera, CACalifornia$25.03$21.74

93566 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.

$23.19

$32.78

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

View every state and territory as a table
93566 office rate range by state
State / territoryOffice rate rangeLocalities
AK$32.781
AL$23.431
AR$23.191
AZ$24.801
CA$25.03–$28.7529
CO$25.401
CT$26.761
DC$27.701
DE$25.121
FL$26.45–$29.733
GA$25.21–$26.072
GU$25.131
HI$25.131
IA$23.231
ID$23.471
IL$26.34–$28.994
IN$23.551
KS$23.451
KY$24.451
LA$24.54–$25.372
MA$25.44–$26.992
MD$25.41–$27.703
ME$23.87–$24.342
MI$25.18–$27.002
MN$23.691
MO$24.44–$25.093
MS$23.811
MT$25.381
NC$23.991
ND$23.801
NE$23.231
NH$25.311
NJ$26.88–$27.612
NM$25.401
NV$24.941
NY$24.27–$29.925
OH$24.851
OK$24.111
OR$24.57–$25.672
PA$24.72–$26.462
PR$25.411
RI$25.621
SC$24.501
SD$23.611
TN$23.571
TX$24.62–$26.488
UT$24.731
VA$24.49–$27.702
VI$25.411
VT$24.001
WA$25.30–$27.152
WI$23.271
WV$25.701
WY$24.691

See 93566 in every payment locality

How the 93566 rate is calculated

Each of 93566’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 · 93566

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.49

0.49 RVUs× 1.000 GPCI

Practice expense0.19

0.19 RVUs× 1.000 GPCI

Malpractice0.08

0.08 RVUs× 1.000 GPCI

Adjusted RVUs

0.7600

Conversion factor

$33.4009

Medicare rate

$25.38

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

The exact Washington, DC area inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

12,136

Code
93566
Physician work
0.49
Practice expense
0.19
Malpractice
0.08

GPCI2026.csv

39

Locality
Washington, DC area
Physician work
1.054
Practice expense
1.178
Malpractice
1.113
Office calculation for 93566 in Washington, DC area
ComponentRVULocality factorAdjusted
Physician work0.49× 1.0540.5165
Practice expense0.19× 1.1780.2238
Malpractice0.08× 1.1130.0890
Total RVUs0.8293
Conversion factor× 33.4009

Office rate, Washington, DC area$27.70

Office: (0.49 × 1.054 + 0.19 × 1.178 + 0.08 × 1.113) × $33.4009 = $27.70

Facility: (0.49 × 1.054 + 0.1 × 1.178 + 0.08 × 1.113) × $33.4009 = $24.16

Open 93566 in the RVU calculator

Payment rules and modifiers for 93566

The CMS indicators that decide how 93566 is paid alongside other services.

CMS payment indicators · 93566

Chamber angiography, right atrium or ventricle

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 93566

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

Codes related to 93566
CodeHow it relatesOffice range, Washington, DC area
Add-on codes
93451Right heart cath, hemodynamic measurementsRight heart catheterization that may serve as the primary procedure for this add-on.$992.04
Same family
93565Cardiac angiography, left ventricle or atriumRelated catheterization injection code for left ventricular or left atrial angiography.$28.79
93567Aortic angiography, supravalvular injectionRelated catheterization injection code for supravalvular aortography.$40.12
93568Pulmonary angiography, nonselective injectionRelated catheterization injection code for nonselective pulmonary artery angiography.$49.95
93563Coronary angiography, during congenital catheterizationRelated catheterization injection code for selective coronary angiography.$55.01

How 93566 has changed in Washington, DC area

93566 · Office / nonfacility

$27.70

Effective 2026-10-01

The base rate is $0.64 higher than on 2025-10-01, moving from $27.06 to $27.70 (2.4%).

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

    $27.06changed to$27.70

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.50 changed to 0.49
    • Practice expense RVU 0.18 changed to 0.19
    • Work GPCI 1.057 changed to 1.054
    • Practice expense GPCI 1.192 changed to 1.178
    • Malpractice GPCI 1.168 changed to 1.113

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $27.84changed to$27.06

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 0.17 changed to 0.18
    • Malpractice RVU 0.09 changed to 0.08

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $27.38changed to$27.84

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $29.47changed to$27.38

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 0.18 changed to 0.17
    • Malpractice RVU 0.10 changed to 0.09
    • Work GPCI 1.056 changed to 1.057
    • Practice expense GPCI 1.214 changed to 1.192
    • Malpractice GPCI 1.231 changed to 1.168

  5. January 1, 2023

    RVU23A

    $161.33changed to$29.47

    • Conversion factor 34.6062 changed to 33.8872
    • Work RVU 0.86 changed to 0.50
    • Practice expense RVU 2.85 changed to 0.18
    • Malpractice RVU 0.18 changed to 0.10
    • Work GPCI 1.054 changed to 1.056
    • Practice expense GPCI 1.236 changed to 1.214
    • Malpractice GPCI 1.294 changed to 1.231

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $174.27changed to$161.33

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 3.14 changed to 2.85
    • Malpractice RVU 0.16 changed to 0.18

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $179.22changed to$174.27

    • Conversion factor 36.0896 changed to 34.8931
    • Malpractice RVU 0.18 changed to 0.16
    • Work GPCI 1.049 changed to 1.054
    • Practice expense GPCI 1.221 changed to 1.236
    • Malpractice GPCI 1.277 changed to 1.294

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $185.64changed to$179.22

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 3.33 changed to 3.14
    • Malpractice RVU 0.19 changed to 0.18
    • Work GPCI 1.045 changed to 1.049
    • Practice expense GPCI 1.205 changed to 1.221
    • Malpractice GPCI 1.261 changed to 1.277

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $195.84changed to$185.64

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 3.57 changed to 3.33

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $193.67changed to$195.84

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 3.53 changed to 3.57
    • Work GPCI 1.048 changed to 1.045
    • Malpractice GPCI 1.271 changed to 1.261

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $205.45changed to$193.67

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 3.81 changed to 3.53
    • Work GPCI 1.051 changed to 1.048
    • Malpractice GPCI 1.280 changed to 1.271

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $205.76changed to$205.45

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 3.80 changed to 3.81

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $204.73changed to$205.76

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $202.87changed to$204.73

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 3.88 changed to 3.80
    • Malpractice RVU 0.08 changed to 0.19
    • Work GPCI 1.050 changed to 1.051
    • Practice expense GPCI 1.202 changed to 1.205
    • Malpractice GPCI 1.205 changed to 1.280

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $207.40changed to$202.87

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 4.26 changed to 3.88
    • Work GPCI 1.049 changed to 1.050
    • Practice expense GPCI 1.198 changed to 1.202
    • Malpractice GPCI 1.130 changed to 1.205

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $207.40

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$27.70$24.16RVU26D
2026-07-01$27.70$24.16RVU26C
2026-04-01$27.70$24.16RVU26B
2026-01-01$27.70$24.16RVU26A
2025-10-01$27.06$27.06RVU25D
2025-07-01$27.06$27.06RVU25C
2025-04-01$27.06$27.06RVU25B
2025-01-01$27.06$27.06RVU25A
2024-10-01$27.84$27.84RVU24D
2024-07-01$27.84$27.84RVU24C
2024-04-01$27.84$27.84RVU24B
2024-03-09$27.84$27.84RVU24AR
2024-01-01$27.38$27.38RVU24A
2023-10-01$29.47$29.47RVU23D
2023-07-01$29.47$29.47RVU23C
2023-04-01$29.47$29.47RVU23B
2023-01-01$29.47$29.47RVU23A
2022-10-01$161.33$52.69RVU22D
2022-07-01$161.33$52.69RVU22C
2022-04-01$161.33$52.69RVU22B
2022-01-01$161.33$52.69RVU22A
2021-10-01$174.27$51.79RVU21D
2021-07-01$174.27$51.79RVU21C
2021-04-01$174.27$51.79RVU21B
2021-01-01$174.27$51.79RVU21A
2020-10-01$179.22$54.07RVU20D
2020-07-01$179.22$54.07RVU20C
2020-04-01$179.22$54.07RVU20B
2020-01-01$179.22$54.07RVU20A
2019-10-01$185.64$54.05RVU19D
2019-07-01$185.64$54.05RVU19C
2019-04-01$185.64$54.05RVU19B
2019-01-01$185.64$54.05RVU19A
2018-10-01$195.84$53.99RVU18D
2018-07-01$195.84$53.99RVU18C
2018-04-01$195.84$53.99RVU18B
2018-01-01$195.84$53.99RVU18AR1
2017-10-01$193.67$53.99RVU17D
2017-07-01$193.67$53.99RVU17C
2017-04-01$193.67$53.99RVU17B
2017-01-01$193.67$53.99RVU17A
2016-10-01$205.45$53.58RVU16D
2016-07-01$205.45$53.58RVU16C
2016-04-01$205.45$53.58RVU16B
2016-01-01$205.45$53.58RVU16A
2015-10-01$205.76$53.77RVU15D
2015-07-01$205.76$53.77RVU15C
2015-04-01$204.73$53.51RVU15B
2015-01-01$204.73$53.51RVU15A
2014-10-01$202.87$48.72RVU14D
2014-07-01$202.87$48.72RVU14C
2014-04-01$202.87$48.72RVU14B
2014-01-01$202.87$48.72RVU14A
2013-10-01$207.40$46.40RVU13D
2013-07-01$207.40$46.40RVU13C
2013-04-01$207.40$46.40RVU13B
2013-01-01$207.40$46.40RVU13AR

Price 93566 for an earlier date of service

Where the Washington, DC area rate applies

Washington, DC area is a Medicare payment area, not a city. Our Census mapping connects it to 1 cities and communities in District of Columbia. Some span more than one payment area; confirm with the service ZIP.

  • Washington

Browse all communities in District of Columbia

93566 billing questions

Can 93566 be reported by itself?

No. It is an add-on code and must be reported with an eligible primary cardiac catheterization procedure.

How is 93566 different from 93565?

93566 reports selective imaging of the right atrium or right ventricle. 93565 is for left ventricular or left atrial angiography.

Does a right heart catheterization with pressure measurements support 93566?

Pressure measurements alone do not describe selective right-sided chamber angiography. The record should support a contrast injection and angiographic imaging of the right atrium or ventricle.

Is the angiographic interpretation separately reported?

The code includes imaging supervision, interpretation, and reporting for the injection study.

What should the procedure note identify?

Document which right-sided chamber was selectively imaged, the injection and angiographic study, and the resulting 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 93566PPRRVU2026_Oct_nonQPP.csv, line 12,136 (RVU26D)
Geographic factors for Washington, DC areaGPCI2026.csv, line 39 (RVU26D)

Open CMS sourceHow we calculate rates

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