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CPT code 77073: Bone length study, lower extremity2026 Medicare rate & RVUs in Connecticut

Reports radiographic measurement of lower-extremity bone lengths, commonly used to evaluate limb-length differences and guide orthopedic assessment or treatment.

CMS RVU26DEffective Oct 1, 2026One payment locality80.8K Medicare services in 2024

In Connecticut, Medicare pays $49.66 for 77073 in the office.

$49.66Office (non-facility)
Not available in this settingHospital or facility
+7.0%vs the national office rate ($46.43)

Check a contract rate as a % of Medicare · 77073 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 77073 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Connecticut
  2. What 77073 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 77073 covers

This study uses radiographs to compare lower-extremity bone lengths, often when a patient has a suspected limb-length difference or is being assessed for an orthopedic growth or alignment concern. It is commonly performed in radiology departments and imaging centers, with a radiologic technologist acquiring the images and a radiologist interpreting them. Orthopedic clinicians may use the findings in evaluating children with unequal limb growth and patients being considered for corrective treatment.

Report 77073 for the bone-length examination, rather than a routine radiograph of one bone or joint. The order and report should support the limb-length question and identify the structures assessed and the interpretation. CMS recognizes professional and technical components: report modifier 26 for the interpretation, modifier TC for the equipment and staff, or no modifier when billing the global service. The component may be billed separately when the service is split between practitioners or entities.

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 77073

Across 109 of 109 payment localities, the office rate for 77073 runs from $40.71 in Arkansas to $63.27 in San Benito County, CA. Connecticut pays $49.66. The RVUs are the same everywhere; the geographic indexes change the dollars.

77073 in Connecticut vs other payment areas
  1. Connecticut · this page$49.66
  2. Los Angeles, CA · California$53.22+$3.56
  3. Washington, DC area · District of Columbia$53.59+$3.93
  4. Miami, FL · Florida$49.48−$0.18
  5. Chicago, IL · Illinois$47.97−$1.69
  6. Manhattan, NY · New York$53.56+$3.90
  7. Alaska · Alaska$52.56+$2.90

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

Every other payment area

77073 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$41.36—
ArkansasArkansas$40.71—
ArizonaArizona$45.13—
Bakersfield, CACalifornia$49.75—
Chico, CACalifornia$49.66—
El Centro, CACalifornia$49.67—
Fresno, CACalifornia$49.66—
Hanford, CACalifornia$49.66—

77073 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.

$40.71

$56.47

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

View every state and territory as a table
77073 office rate range by state
State / territoryOffice rate rangeLocalities
AK$52.561
AL$41.361
AR$40.711
AZ$45.131
CA$49.66–$63.2729
CO$48.681
CT$49.661
DC$53.591
DE$45.921
FL$45.30–$49.483
GA$42.62–$47.252
GU$51.081
HI$51.081
IA$42.671
ID$42.931
IL$43.77–$48.264
IN$43.211
KS$42.371
KY$42.231
LA$42.12–$44.382
MA$48.32–$53.852
MD$46.87–$53.593
ME$43.08–$45.722
MI$43.33–$45.822
MN$46.801
MO$41.28–$44.653
MS$41.011
MT$46.431
NC$43.581
ND$45.831
NE$42.951
NH$47.821
NJ$50.27–$52.952
NM$43.551
NV$46.301
NY$44.28–$54.835
OH$43.211
OK$42.241
OR$45.98–$50.422
PA$43.33–$48.292
PR$46.821
RI$47.701
SC$43.461
SD$45.761
TN$42.591
TX$43.02–$48.488
UT$44.101
VA$45.50–$53.592
VI$46.821
VT$45.561
WA$48.26–$55.082
WI$44.181
WV$42.001
WY$46.171

See 77073 in every payment locality

How the 77073 rate is calculated

Each of 77073’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 · 77073

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.25

0.25 RVUs× 1.000 GPCI

Practice expense1.11

1.11 RVUs× 1.000 GPCI

Malpractice0.03

0.03 RVUs× 1.000 GPCI

Adjusted RVUs

1.3900

Conversion factor

$33.4009

Medicare rate

$46.43

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

8,989

Code
77073
Physician work
0.25
Practice expense
1.11
Malpractice
0.03

GPCI2026.csv

38

Locality
Connecticut
Physician work
1.020
Practice expense
1.077
Malpractice
1.210
Office calculation for 77073 in Connecticut
ComponentRVULocality factorAdjusted
Physician work0.25× 1.0200.2550
Practice expense1.11× 1.0771.1955
Malpractice0.03× 1.2100.0363
Total RVUs1.4868
Conversion factor× 33.4009

Office rate, Connecticut$49.66

Office: (0.25 × 1.02 + 1.11 × 1.077 + 0.03 × 1.21) × $33.4009 = $49.66

Open 77073 in the RVU calculator

Payment rules and modifiers for 77073

The CMS indicators that decide how 77073 is paid alongside other services.

CMS payment indicators · 77073

Bone length study, lower extremity

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

77073 without 26 · national office

$46.43

Bone length study, lower extremity

77073-26 · Professional component

$13.03

Pays only the interpretation and report.

When to use modifier 26

Codes related to 77073

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

Codes related to 77073
CodeHow it relatesOffice range, Connecticut
Often billed with
77072Bone age, skeletal maturity studyMay accompany a length study when skeletal maturity is also being evaluated.$27.07
73552Femur X-ray, two or more viewsDedicated femur views may be separately indicated for a distinct diagnostic question.$38.24
73590Lower-leg X-ray, tibia and fibula, two viewsDedicated tibia and fibula views may be separately indicated for a distinct diagnostic question.$33.60

How 77073 has changed in Connecticut

77073 · Office / nonfacility

$49.66

Effective 2026-10-01

The base rate is $2.13 higher than on 2025-10-01, moving from $47.53 to $49.66 (4.5%).

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

    $47.53changed to$49.66

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 0.26 changed to 0.25
    • Practice expense RVU 1.07 changed to 1.11
    • 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

    $48.91changed to$47.53

    • Conversion factor 33.2875 changed to 32.3465

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $48.11changed to$48.91

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $49.75changed to$48.11

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 1.06 changed to 1.07
    • 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

    $51.16changed to$49.75

    • 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

    $50.42changed to$51.16

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 1.03 changed to 1.06

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $49.00changed to$50.42

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 0.95 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

    $41.75changed to$49.00

    • Conversion factor 36.0391 changed to 36.0896
    • Work RVU 0.27 changed to 0.26
    • Practice expense RVU 0.76 changed to 0.95
    • 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

    $40.10changed to$41.75

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 0.72 changed to 0.76

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $39.71changed to$40.10

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 0.71 changed to 0.72
    • 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

    $39.72changed to$39.71

    • Conversion factor 35.8043 changed to 35.8887
    • 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

    $40.31changed to$39.72

    • Conversion factor 35.9335 changed to 35.8043
    • Malpractice RVU 0.04 changed to 0.03

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $40.10changed to$40.31

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $42.50changed to$40.10

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 0.76 changed to 0.71
    • Malpractice RVU 0.05 changed to 0.04
    • 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

    $43.23changed to$42.50

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 0.84 changed to 0.76
    • 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: $43.23

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$49.66Not available in this settingRVU26D
2026-07-01$49.66Not available in this settingRVU26C
2026-04-01$49.66Not available in this settingRVU26B
2026-01-01$49.66Not available in this settingRVU26A
2025-10-01$47.53Not available in this settingRVU25D
2025-07-01$47.53Not available in this settingRVU25C
2025-04-01$47.53Not available in this settingRVU25B
2025-01-01$47.53Not available in this settingRVU25A
2024-10-01$48.91Not available in this settingRVU24D
2024-07-01$48.91Not available in this settingRVU24C
2024-04-01$48.91Not available in this settingRVU24B
2024-03-09$48.91Not available in this settingRVU24AR
2024-01-01$48.11Not available in this settingRVU24A
2023-10-01$49.75Not available in this settingRVU23D
2023-07-01$49.75Not available in this settingRVU23C
2023-04-01$49.75Not available in this settingRVU23B
2023-01-01$49.75Not available in this settingRVU23A
2022-10-01$51.16Not available in this settingRVU22D
2022-07-01$51.16Not available in this settingRVU22C
2022-04-01$51.16Not available in this settingRVU22B
2022-01-01$51.16Not available in this settingRVU22A
2021-10-01$50.42Not available in this settingRVU21D
2021-07-01$50.42Not available in this settingRVU21C
2021-04-01$50.42Not available in this settingRVU21B
2021-01-01$50.42Not available in this settingRVU21A
2020-10-01$49.00Not available in this settingRVU20D
2020-07-01$49.00Not available in this settingRVU20C
2020-04-01$49.00Not available in this settingRVU20B
2020-01-01$49.00Not available in this settingRVU20A
2019-10-01$41.75Not available in this settingRVU19D
2019-07-01$41.75Not available in this settingRVU19C
2019-04-01$41.75Not available in this settingRVU19B
2019-01-01$41.75Not available in this settingRVU19A
2018-10-01$40.10Not available in this settingRVU18D
2018-07-01$40.10Not available in this settingRVU18C
2018-04-01$40.10Not available in this settingRVU18B
2018-01-01$40.10Not available in this settingRVU18AR1
2017-10-01$39.71Not available in this settingRVU17D
2017-07-01$39.71Not available in this settingRVU17C
2017-04-01$39.71Not available in this settingRVU17B
2017-01-01$39.71Not available in this settingRVU17A
2016-10-01$39.72Not available in this settingRVU16D
2016-07-01$39.72Not available in this settingRVU16C
2016-04-01$39.72Not available in this settingRVU16B
2016-01-01$39.72Not available in this settingRVU16A
2015-10-01$40.31Not available in this settingRVU15D
2015-07-01$40.31Not available in this settingRVU15C
2015-04-01$40.10Not available in this settingRVU15B
2015-01-01$40.10Not available in this settingRVU15A
2014-10-01$42.50Not available in this settingRVU14D
2014-07-01$42.50Not available in this settingRVU14C
2014-04-01$42.50Not available in this settingRVU14B
2014-01-01$42.50Not available in this settingRVU14A
2013-10-01$43.23Not available in this settingRVU13D
2013-07-01$43.23Not available in this settingRVU13C
2013-04-01$43.23Not available in this settingRVU13B
2013-01-01$43.23Not available in this settingRVU13AR

Price 77073 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

77073 billing questions

When should 77073 be chosen instead of a bone-age study?

Use 77073 when the imaging question is lower-extremity bone length or limb-length difference. A bone-age study, such as 77072, evaluates skeletal maturity.

How are the professional and technical services reported?

Use modifier 26 for the professional interpretation and modifier TC for the technical service. Without either modifier, the claim represents the global service.

Can dedicated femur or tibia and fibula films also be reported?

They may be separately reported when the clinician orders distinct diagnostic views for a separate clinical question. The documentation should support that additional examination, rather than simply restating the bone-length assessment.

What documentation supports 77073?

The order and report should identify the lower-extremity length question and document the structures evaluated and the radiologist’s findings.

Is 77073 the same as a skeletal survey?

No. It assesses lower-extremity bone lengths; a skeletal survey examines bones for a broader or different diagnostic purpose.

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 77073PPRRVU2026_Oct_nonQPP.csv, line 8,989 (RVU26D)
Geographic factors for ConnecticutGPCI2026.csv, line 38 (RVU26D)

Open CMS sourceHow we calculate rates

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