CPT code 74018: Abdomen X-ray, single view (KUB)2026 Medicare rate & RVUs in Connecticut

Report 74018 for a single-view abdominal radiograph, commonly called a KUB, obtained to assess bowel gas patterns, radiopaque stones, or tube position.

CMS RVU26DEffective Oct 1, 2026One payment locality2M Medicare services in 2024

In Connecticut, Medicare pays $31.76 for 74018 in the office.

$31.76Office (non-facility)
Not available in this settingHospital or facility
+6.8%vs the national office rate ($29.73)

Check a contract rate as a % of Medicare · 74018 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 74018 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Connecticut
  2. What 74018 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 74018 covers

A technologist obtains one projection of the abdomen, commonly a supine kidney-ureter-bladder (KUB) view, in an office, imaging center, emergency department, or at the bedside. Clinicians order it to evaluate bowel gas in suspected obstruction or ileus, locate radiopaque urinary stones or ingested objects, and check enteric tube position when the anatomy needed for confirmation is visible. A radiologist or other qualified interpreting physician reviews the images and documents findings. More than one exposure may be needed to cover the abdomen without creating another view.

Select 74018 by the number of abdominal projections, not the number of images or findings; document the projection obtained and its interpretation. Two abdominal views belong to 74019, three or more to 74021, and a complete acute abdomen series with chest imaging belongs to 74022. Medicare prices the interpretation separately with modifier 26 and the equipment and staff portion with modifier TC. Bill the combined service without a component modifier when the same billing entity provides both portions. For hospital imaging, the physician generally reports modifier 26; the facility reports its technical 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 74018

Across 109 of 109 payment localities, the office rate for 74018 runs from $26.15 in Arkansas to $40.26 in San Benito County, CA. Connecticut pays $31.76. The RVUs are the same everywhere; the geographic indexes change the dollars.

74018 in Connecticut vs other payment areas
  1. Connecticut · this page$31.76
  2. Los Angeles, CA · California$33.97+$2.21
  3. Washington, DC area · District of Columbia$34.23+$2.47
  4. Miami, FL · Florida$31.69−$0.07
  5. Chicago, IL · Illinois$30.75−$1.01
  6. Manhattan, NY · New York$34.24+$2.48
  7. Alaska · Alaska$33.93+$2.17

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

Every other payment area

74018 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$26.56—
ArkansasArkansas$26.15—
ArizonaArizona$28.92—
Bakersfield, CACalifornia$31.79—
Chico, CACalifornia$31.73—
El Centro, CACalifornia$31.73—
Fresno, CACalifornia$31.73—
Hanford, CACalifornia$31.73—

74018 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.

$26.15

$36.00

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

View every state and territory as a table
74018 office rate range by state
State / territoryOffice rate rangeLocalities
AK$33.931
AL$26.561
AR$26.151
AZ$28.921
CA$31.73–$40.2629
CO$31.131
CT$31.761
DC$34.231
DE$29.411
FL$29.05–$31.693
GA$27.37–$30.252
GU$32.601
HI$32.601
IA$27.371
ID$27.531
IL$28.10–$30.914
IN$27.701
KS$27.181
KY$27.111
LA$27.05–$28.462
MA$30.91–$34.372
MD$30.01–$34.233
ME$27.63–$29.272
MI$27.81–$29.382
MN$29.921
MO$26.53–$28.623
MS$26.351
MT$29.731
NC$27.941
ND$29.331
NE$27.541
NH$30.591
NJ$32.15–$33.842
NM$27.951
NV$29.641
NY$28.38–$35.045
OH$27.731
OK$27.111
OR$29.44–$32.212
PA$27.80–$30.912
PR$29.971
RI$30.531
SC$27.881
SD$29.281
TN$27.321
TX$27.61–$31.008
UT$28.281
VA$29.14–$34.232
VI$29.971
VT$29.171
WA$30.87–$35.142
WI$28.301
WV$27.001
WY$29.551

See 74018 in every payment locality

How the 74018 rate is calculated

Each of 74018’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 · 74018

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.18

0.18 RVUs× 1.000 GPCI

Practice expense0.69

0.69 RVUs× 1.000 GPCI

Malpractice0.02

0.02 RVUs× 1.000 GPCI

Adjusted RVUs

0.8900

Conversion factor

$33.4009

Medicare rate

$29.73

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

8,288

Code
74018
Physician work
0.18
Practice expense
0.69
Malpractice
0.02

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Office calculation for 74018 in Connecticut
ComponentRVULocality factorAdjusted
Physician work0.18× 1.0200.1836
Practice expense0.69× 1.0770.7431
Malpractice0.02× 1.2100.0242
Total RVUs0.9509
Conversion factor× 33.4009

Office rate, Connecticut$31.76

Office: (0.18 × 1.02 + 0.69 × 1.077 + 0.02 × 1.21) × $33.4009 = $31.76

Open 74018 in the RVU calculator

Payment rules and modifiers for 74018

The CMS indicators that decide how 74018 is paid alongside other services.

CMS payment indicators · 74018

Abdomen X-ray, single view (KUB)

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

74018 without 26 · national office

$29.73

Abdomen X-ray, single view (KUB)

74018-26 · Professional component

$8.68

Pays only the interpretation and report.

When to use modifier 26

How 74018 has changed in Connecticut

74018 · Office / nonfacility

$31.76

Effective 2026-10-01

The base rate is $0.33 higher than on 2025-10-01, moving from $31.43 to $31.76 (1.0%).

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

    $31.43changed to$31.76

    • Conversion factor 32.3465 changed to 33.4009
    • Practice expense RVU 0.70 changed to 0.69
    • 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

    $32.71changed to$31.43

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 0.71 changed to 0.70

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $32.18changed to$32.71

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $33.15changed to$32.18

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 0.70 changed to 0.71
    • 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

    $34.09changed to$33.15

    • Conversion factor 34.6062 changed to 33.8872
    • 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

    $33.21changed to$34.09

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 0.67 changed to 0.70

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $32.38changed to$33.21

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 0.62 changed to 0.67
    • 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

    $31.57changed to$32.38

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 0.60 changed to 0.62
    • 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

    $30.34changed to$31.57

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 0.57 changed to 0.60

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    No ratechanged to$30.34

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D, RVU17A, RVU17B, RVU17C, RVU17D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$31.76Not available in this settingRVU26D
2026-07-01$31.76Not available in this settingRVU26C
2026-04-01$31.76Not available in this settingRVU26B
2026-01-01$31.76Not available in this settingRVU26A
2025-10-01$31.43Not available in this settingRVU25D
2025-07-01$31.43Not available in this settingRVU25C
2025-04-01$31.43Not available in this settingRVU25B
2025-01-01$31.43Not available in this settingRVU25A
2024-10-01$32.71Not available in this settingRVU24D
2024-07-01$32.71Not available in this settingRVU24C
2024-04-01$32.71Not available in this settingRVU24B
2024-03-09$32.71Not available in this settingRVU24AR
2024-01-01$32.18Not available in this settingRVU24A
2023-10-01$33.15Not available in this settingRVU23D
2023-07-01$33.15Not available in this settingRVU23C
2023-04-01$33.15Not available in this settingRVU23B
2023-01-01$33.15Not available in this settingRVU23A
2022-10-01$34.09Not available in this settingRVU22D
2022-07-01$34.09Not available in this settingRVU22C
2022-04-01$34.09Not available in this settingRVU22B
2022-01-01$34.09Not available in this settingRVU22A
2021-10-01$33.21Not available in this settingRVU21D
2021-07-01$33.21Not available in this settingRVU21C
2021-04-01$33.21Not available in this settingRVU21B
2021-01-01$33.21Not available in this settingRVU21A
2020-10-01$32.38Not available in this settingRVU20D
2020-07-01$32.38Not available in this settingRVU20C
2020-04-01$32.38Not available in this settingRVU20B
2020-01-01$32.38Not available in this settingRVU20A
2019-10-01$31.57Not available in this settingRVU19D
2019-07-01$31.57Not available in this settingRVU19C
2019-04-01$31.57Not available in this settingRVU19B
2019-01-01$31.57Not available in this settingRVU19A
2018-10-01$30.34Not available in this settingRVU18D
2018-07-01$30.34Not available in this settingRVU18C
2018-04-01$30.34Not available in this settingRVU18B
2018-01-01$30.34Not available in this settingRVU18AR1
2017-10-01Not in this releaseNot in this releaseRVU17D
2017-07-01Not in this releaseNot in this releaseRVU17C
2017-04-01Not in this releaseNot in this releaseRVU17B
2017-01-01Not in this releaseNot in this releaseRVU17A
2016-10-01Not in this releaseNot in this releaseRVU16D
2016-07-01Not in this releaseNot in this releaseRVU16C
2016-04-01Not in this releaseNot in this releaseRVU16B
2016-01-01Not in this releaseNot in this releaseRVU16A
2015-10-01Not in this releaseNot in this releaseRVU15D
2015-07-01Not in this releaseNot in this releaseRVU15C
2015-04-01Not in this releaseNot in this releaseRVU15B
2015-01-01Not in this releaseNot in this releaseRVU15A
2014-10-01Not in this releaseNot in this releaseRVU14D
2014-07-01Not in this releaseNot in this releaseRVU14C
2014-04-01Not in this releaseNot in this releaseRVU14B
2014-01-01Not in this releaseNot in this releaseRVU14A
2013-10-01Not in this releaseNot in this releaseRVU13D
2013-07-01Not in this releaseNot in this releaseRVU13C
2013-04-01Not in this releaseNot in this releaseRVU13B
2013-01-01Not in this releaseNot in this releaseRVU13AR

Price 74018 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

74018 billing questions

When should 74018 be reported instead of the two-view code?

Report 74018 for one abdominal projection. If a second projection, such as an upright or decubitus view, is obtained, use 74019 instead.

Which modifier does a radiologist interpreting a hospital film use?

The interpreting physician appends modifier 26 to report the interpretation and signed report. The hospital reports its technical service on the facility claim.

Can a single-view abdomen and a single-view chest be reported together?

When separately ordered and performed as distinct exams, report the one-view abdomen with 74018 and the one-view chest with 71045. A complete acute abdomen series with multiple abdominal views and a chest view is reported with 74022.

Do multiple images of the same abdominal projection count as multiple views?

No. If additional images extend coverage of the same projection, select 74018 based on the single view rather than the number of exposures.

How is the technical portion of a one-view abdominal study reported?

The entity furnishing the equipment and staff reports 74018 with modifier TC when billing only that portion. An entity furnishing both the technical service and interpretation reports 74018 without a component modifier.

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 74018PPRRVU2026_Oct_nonQPP.csv, line 8,288 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)

Open CMS sourceHow we calculate rates

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