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CPT code 78582: Lung scan, ventilation and perfusion2026 Medicare rate & RVUs in Connecticut

Reports paired lung ventilation and perfusion imaging, commonly used to evaluate suspected pulmonary embolism by comparing airflow and blood-flow patterns.

CMS RVU26DEffective Oct 1, 2026One payment locality51.7K Medicare services in 2024

In Connecticut, Medicare pays $311.47 for 78582 in the office.

$311.47Office (non-facility)
Not available in this settingHospital or facility
+7.2%vs the national office rate ($290.59)

Check a contract rate as a % of Medicare · 78582 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 78582 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Connecticut
  2. What 78582 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 78582 covers

A nuclear medicine team acquires images of air distribution after the patient inhales a radiotracer and blood flow after an intravenous radiotracer. A nuclear medicine physician interprets the paired patterns, often for evaluation of suspected pulmonary embolism. The study is typically performed in a hospital or outpatient imaging department, with imaging staff handling tracer administration and acquisition.

Report 78582 when both ventilation and perfusion imaging are performed as a paired lung study; ventilation-only or perfusion-only imaging is reported with a different code. Documentation should support both portions of the examination and include the resulting interpretation. CMS recognizes professional and technical components: report modifier 26 for the interpretation, modifier TC for the equipment and staff, or no component modifier for the global 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 Connecticut compares for 78582

Across 109 of 109 payment localities, the office rate for 78582 runs from $253.25 in Arkansas to $404.17 in San Benito County, CA. Connecticut pays $311.47. The RVUs are the same everywhere; the geographic indexes change the dollars.

78582 in Connecticut vs other payment areas
  1. Connecticut · this page$311.47
  2. Los Angeles, CA · California$336.93+$25.46
  3. Washington, DC area · District of Columbia$337.77+$26.30
  4. Miami, FL · Florida$306.54−$4.93
  5. Chicago, IL · Illinois$296.85−$14.62
  6. Manhattan, NY · New York$335.82+$24.35
  7. Alaska · Alaska$322.70+$11.23

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

Every other payment area

78582 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$257.47—
ArkansasArkansas$253.25—
ArizonaArizona$282.24—
Bakersfield, CACalifornia$314.02—
Chico, CACalifornia$313.68—
El Centro, CACalifornia$313.70—
Fresno, CACalifornia$313.68—
Hanford, CACalifornia$313.68—

78582 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.

$253.25

$358.93

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

View every state and territory as a table
78582 office rate range by state
State / territoryOffice rate rangeLocalities
AK$322.701
AL$257.471
AR$253.251
AZ$282.241
CA$313.68–$404.1729
CO$306.341
CT$311.471
DC$337.771
DE$287.361
FL$281.34–$306.543
GA$264.06–$295.472
GU$323.591
HI$323.591
IA$266.941
ID$268.481
IL$270.72–$300.484
IN$270.291
KS$264.561
KY$262.281
LA$261.43–$276.212
MA$303.76–$340.532
MD$293.66–$337.773
ME$269.02–$286.962
MI$269.12–$284.282
MN$295.311
MO$255.69–$278.493
MS$254.581
MT$290.581
NC$272.371
ND$288.411
NE$268.881
NH$300.471
NJ$315.53–$333.372
NM$270.401
NV$290.231
NY$276.89–$343.625
OH$268.681
OK$262.791
OR$288.49–$318.192
PA$269.71–$302.262
PR$293.311
RI$299.171
SC$270.871
SD$288.151
TN$265.941
TX$267.63–$304.868
UT$275.081
VA$285.22–$337.772
VI$293.311
VT$286.251
WA$303.53–$348.902
WI$277.451
WV$259.141
WY$289.631

See 78582 in every payment locality

How the 78582 rate is calculated

Each of 78582’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 · 78582

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.04

1.04 RVUs× 1.000 GPCI

Practice expense7.55

7.55 RVUs× 1.000 GPCI

Malpractice0.11

0.11 RVUs× 1.000 GPCI

Adjusted RVUs

8.7000

Conversion factor

$33.4009

Medicare rate

$290.59

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

9,431

Code
78582
Physician work
1.04
Practice expense
7.55
Malpractice
0.11

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Office calculation for 78582 in Connecticut
ComponentRVULocality factorAdjusted
Physician work1.04× 1.0201.0608
Practice expense7.55× 1.0778.1313
Malpractice0.11× 1.2100.1331
Total RVUs9.3253
Conversion factor× 33.4009

Office rate, Connecticut$311.47

Office: (1.04 × 1.02 + 7.55 × 1.077 + 0.11 × 1.21) × $33.4009 = $311.47

Open 78582 in the RVU calculator

Payment rules and modifiers for 78582

The CMS indicators that decide how 78582 is paid alongside other services.

CMS payment indicators · 78582

Lung scan, ventilation and perfusion

RuleCMS valueWhat it means
Global periodXXXThe global surgery concept doesn’t apply.
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/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

78582 without 26 · national office

$290.59

Lung scan, ventilation and perfusion

78582-26 · Professional component

$48.43

Pays only the interpretation and report.

When to use modifier 26

Codes related to 78582

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

Codes related to 78582
CodeHow it relatesOffice range, Connecticut
Same family
78579Lung scan, ventilation onlyVentilation-only lung imaging; use when perfusion imaging is not part of the study.$178.50
78580Lung perfusion scan, perfusion onlyPerfusion-only lung imaging; use when ventilation imaging is not part of the study.$224.53
Used instead
78597Lung perfusion, differential quantificationDifferential perfusion imaging for quantitative assessment rather than paired routine ventilation and perfusion imaging.$192.77
78598Lung V/Q imaging, differential ventilation and perfusionDifferential ventilation and perfusion imaging for quantitative lung-function assessment.$284.08

How 78582 has changed in Connecticut

78582 · Office / nonfacility

$311.47

Effective 2026-10-01

The base rate is $0.17 lower than on 2025-10-01, moving from $311.64 to $311.47 (0.1%).

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

    $311.64changed to$311.47

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 1.07 changed to 1.04
    • Practice expense RVU 7.74 changed to 7.55
    • Malpractice RVU 0.08 changed to 0.11
    • 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

    $328.41changed to$311.64

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 7.93 changed to 7.74
    • Malpractice RVU 0.10 changed to 0.08

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $323.05changed to$328.41

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $343.11changed to$323.05

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 8.11 changed to 7.93
    • Malpractice RVU 0.08 changed to 0.10
    • 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

    $359.36changed to$343.11

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 8.25 changed to 8.11
    • Malpractice RVU 0.09 changed to 0.08
    • 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

    $377.11changed to$359.36

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 8.63 changed to 8.25

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $379.89changed to$377.11

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 8.37 changed to 8.63
    • Malpractice RVU 0.10 changed to 0.09
    • 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

    $383.33changed to$379.89

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 8.47 changed to 8.37
    • 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

    $389.32changed to$383.33

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 8.63 changed to 8.47

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $389.30changed to$389.32

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 8.62 changed to 8.63
    • 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

    $388.82changed to$389.30

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 8.60 changed to 8.62
    • 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

    $388.13changed to$388.82

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 8.57 changed to 8.60
    • Malpractice RVU 0.08 changed to 0.10

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $386.19changed to$388.13

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $379.40changed to$386.19

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 8.42 changed to 8.57
    • 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

    No ratechanged to$379.40

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$311.47Not available in this settingRVU26D
2026-07-01$311.47Not available in this settingRVU26C
2026-04-01$311.47Not available in this settingRVU26B
2026-01-01$311.47Not available in this settingRVU26A
2025-10-01$311.64Not available in this settingRVU25D
2025-07-01$311.64Not available in this settingRVU25C
2025-04-01$311.64Not available in this settingRVU25B
2025-01-01$311.64Not available in this settingRVU25A
2024-10-01$328.41Not available in this settingRVU24D
2024-07-01$328.41Not available in this settingRVU24C
2024-04-01$328.41Not available in this settingRVU24B
2024-03-09$328.41Not available in this settingRVU24AR
2024-01-01$323.05Not available in this settingRVU24A
2023-10-01$343.11Not available in this settingRVU23D
2023-07-01$343.11Not available in this settingRVU23C
2023-04-01$343.11Not available in this settingRVU23B
2023-01-01$343.11Not available in this settingRVU23A
2022-10-01$359.36Not available in this settingRVU22D
2022-07-01$359.36Not available in this settingRVU22C
2022-04-01$359.36Not available in this settingRVU22B
2022-01-01$359.36Not available in this settingRVU22A
2021-10-01$377.11Not available in this settingRVU21D
2021-07-01$377.11Not available in this settingRVU21C
2021-04-01$377.11Not available in this settingRVU21B
2021-01-01$377.11Not available in this settingRVU21A
2020-10-01$379.89Not available in this settingRVU20D
2020-07-01$379.89Not available in this settingRVU20C
2020-04-01$379.89Not available in this settingRVU20B
2020-01-01$379.89Not available in this settingRVU20A
2019-10-01$383.33Not available in this settingRVU19D
2019-07-01$383.33Not available in this settingRVU19C
2019-04-01$383.33Not available in this settingRVU19B
2019-01-01$383.33Not available in this settingRVU19A
2018-10-01$389.32Not available in this settingRVU18D
2018-07-01$389.32Not available in this settingRVU18C
2018-04-01$389.32Not available in this settingRVU18B
2018-01-01$389.32Not available in this settingRVU18AR1
2017-10-01$389.30Not available in this settingRVU17D
2017-07-01$389.30Not available in this settingRVU17C
2017-04-01$389.30Not available in this settingRVU17B
2017-01-01$389.30Not available in this settingRVU17A
2016-10-01$388.82Not available in this settingRVU16D
2016-07-01$388.82Not available in this settingRVU16C
2016-04-01$388.82Not available in this settingRVU16B
2016-01-01$388.82Not available in this settingRVU16A
2015-10-01$388.13Not available in this settingRVU15D
2015-07-01$388.13Not available in this settingRVU15C
2015-04-01$386.19Not available in this settingRVU15B
2015-01-01$386.19Not available in this settingRVU15A
2014-10-01$379.40Not available in this settingRVU14D
2014-07-01$379.40Not available in this settingRVU14C
2014-04-01$379.40Not available in this settingRVU14B
2014-01-01$379.40Not available in this settingRVU14A
2013-10-01Additional calculation requiredNot available in this settingRVU13D
2013-07-01Additional calculation requiredNot available in this settingRVU13C
2013-04-01Additional calculation requiredNot available in this settingRVU13B
2013-01-01Additional calculation requiredNot available in this settingRVU13AR

Price 78582 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

78582 billing questions

When should 78582 be chosen over 78579 or 78580?

Use 78582 when the examination includes both ventilation and perfusion imaging. Code 78579 is for ventilation imaging alone, and 78580 is for perfusion imaging alone.

How are the professional and technical services reported?

Use modifier 26 for the physician's interpretation and modifier TC for the technical service. Without either modifier, the code represents the global service.

What documentation supports reporting 78582?

The record should show that both ventilation and perfusion images were acquired and include the physician's interpretation of the study.

Is this the same as differential lung imaging?

No. 78582 reports paired ventilation and perfusion imaging; differential codes address quantitative assessment of lung-function distribution.

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 78582PPRRVU2026_Oct_nonQPP.csv, line 9,431 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)

Open CMS sourceHow we calculate rates

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