CPT code 77072: Bone age, skeletal maturity study2026 Medicare rate & RVUs in Alaska

Reports a radiographic assessment of skeletal maturity, commonly used in children when growth or endocrine evaluation calls for comparison with expected bone development.

CMS RVU26DEffective Oct 1, 2026One payment locality292 Medicare services in 2024

In Alaska, Medicare pays $29.45 for 77072 in the office.

$29.45Office (non-facility)
Not available in this settingHospital or facility
+16.0%vs the national office rate ($25.38)

Check a contract rate as a % of Medicare · 77072 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 77072 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Alaska
  2. What 77072 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 77072 covers

A bone age study uses radiographic images, typically of the hand and wrist, to assess skeletal maturity. A radiologist or other qualified interpreting practitioner evaluates the images and estimates how developed the bones appear relative to expected maturation. Pediatricians and pediatric endocrinologists commonly request the study when evaluating growth concerns or disorders that can affect development. The clinical question is skeletal maturity, not bone density or the length of a limb.

Select this code when the service performed is a bone age assessment, and retain documentation supporting the reason for the study and the interpreting report. CMS recognizes a professional component for interpretation and a technical component for the equipment and staff; bill modifier 26 for the professional portion or modifier TC for the technical portion. Billing without either modifier represents the global service, including both components.

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 Alaska compares for 77072

Across 109 of 109 payment localities, the office rate for 77072 runs from $22.47 in Arkansas to $33.89 in San Benito County, CA. Alaska pays $29.45. The RVUs are the same everywhere; the geographic indexes change the dollars.

77072 in Alaska vs other payment areas
  1. Alaska · this page$29.45
  2. Los Angeles, CA · California$28.78−$0.67
  3. Washington, DC area · District of Columbia$29.07−$0.38
  4. Miami, FL · Florida$27.16−$2.29
  5. Chicago, IL · Illinois$26.39−$3.06
  6. Manhattan, NY · New York$29.16−$0.29
  7. Alabama · Alabama$22.80−$6.65

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

Every other payment area

77072 in every other Medicare payment locality
Payment localityOfficeFacility
ArkansasArkansas$22.47—
ArizonaArizona$24.72—
Bakersfield, CACalifornia$27.01—
Chico, CACalifornia$26.95—
El Centro, CACalifornia$26.95—
Fresno, CACalifornia$26.95—
Hanford, CACalifornia$26.95—
Madera, CACalifornia$26.95—

77072 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.

$22.47

$30.42

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

View every state and territory as a table
77072 office rate range by state
State / territoryOffice rate rangeLocalities
AK$29.451
AL$22.801
AR$22.471
AZ$24.721
CA$26.95–$33.8929
CO$26.491
CT$27.071
DC$29.071
DE$25.131
FL$24.91–$27.163
GA$23.53–$25.832
GU$27.621
HI$27.621
IA$23.421
ID$23.561
IL$24.16–$26.444
IN$23.701
KS$23.291
KY$23.291
LA$23.24–$24.392
MA$26.32–$29.142
MD$25.61–$29.073
ME$23.66–$24.972
MI$23.87–$25.202
MN$25.451
MO$22.83–$24.503
MS$22.661
MT$25.381
NC$23.911
ND$24.991
NE$23.551
NH$26.051
NJ$27.39–$28.772
NM$23.991
NV$25.291
NY$24.27–$29.845
OH$23.791
OK$23.271
OR$25.11–$27.352
PA$23.84–$26.382
PR$25.581
RI$26.041
SC$23.891
SD$24.941
TN$23.401
TX$23.68–$26.398
UT$24.211
VA$24.88–$29.072
VI$25.581
VT$24.871
WA$26.28–$29.752
WI$24.151
WV$23.271
WY$25.211

See 77072 in every payment locality

How the 77072 rate is calculated

Each of 77072’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 · 77072

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.19

0.19 RVUs× 1.000 GPCI

Practice expense0.55

0.55 RVUs× 1.000 GPCI

Malpractice0.02

0.02 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 Alaska inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

8,986

Code
77072
Physician work
0.19
Practice expense
0.55
Malpractice
0.02

GPCI2026.csv

5

Locality
Alaska
Physician work
1.500
Practice expense
1.065
Malpractice
0.551
Office calculation for 77072 in Alaska
ComponentRVULocality factorAdjusted
Physician work0.19× 1.5000.2850
Practice expense0.55× 1.0650.5857
Malpractice0.02× 0.5510.0110
Total RVUs0.8818
Conversion factor× 33.4009

Office rate, Alaska$29.45

Office: (0.19 × 1.5 + 0.55 × 1.065 + 0.02 × 0.551) × $33.4009 = $29.45

Open 77072 in the RVU calculator

Payment rules and modifiers for 77072

The CMS indicators that decide how 77072 is paid alongside other services.

CMS payment indicators · 77072

Bone age, skeletal maturity study

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

77072 without 26 · national office

$25.38

Bone age, skeletal maturity study

77072-26 · Professional component

$9.02

Pays only the interpretation and report.

When to use modifier 26

How 77072 has changed in Alaska

77072 · Office / nonfacility

$29.45

Effective 2026-10-01

The base rate is $0.27 higher than on 2025-10-01, moving from $29.18 to $29.45 (0.9%).

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

    $29.18changed to$29.45

    • Conversion factor 32.3465 changed to 33.4009
    • Practice expense RVU 0.56 changed to 0.55
    • Practice expense GPCI 1.081 changed to 1.065
    • Malpractice GPCI 0.592 changed to 0.551

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $30.39changed to$29.18

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 0.57 changed to 0.56

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $29.90changed to$30.39

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $31.31changed to$29.90

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense GPCI 1.100 changed to 1.081
    • Malpractice GPCI 0.603 changed to 0.592
  5. January 1, 2023

    RVU23A

    $32.34changed to$31.31

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense GPCI 1.118 changed to 1.100
    • Malpractice GPCI 0.614 changed to 0.603

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $31.83changed to$32.34

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 0.55 changed to 0.57

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $30.94changed to$31.83

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 0.50 changed to 0.55
    • Malpractice GPCI 0.661 changed to 0.614

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $29.70changed to$30.94

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 0.47 changed to 0.50
    • Practice expense GPCI 1.117 changed to 1.118
    • Malpractice GPCI 0.708 changed to 0.661

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $28.46changed to$29.70

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 0.44 changed to 0.47

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $28.30changed to$28.46

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense GPCI 1.112 changed to 1.117
    • Malpractice GPCI 0.710 changed to 0.708

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $28.15changed to$28.30

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense GPCI 1.107 changed to 1.112
    • Malpractice GPCI 0.712 changed to 0.710

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $28.26changed to$28.15

    • Conversion factor 35.9335 changed to 35.8043

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $28.11changed to$28.26

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $28.61changed to$28.11

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 0.46 changed to 0.44
    • Practice expense GPCI 1.087 changed to 1.107
    • Malpractice GPCI 0.687 changed to 0.712

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $27.93changed to$28.61

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 0.49 changed to 0.46
    • Practice expense GPCI 1.067 changed to 1.087
    • Malpractice GPCI 0.661 changed to 0.687

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $27.93

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$29.45Not available in this settingRVU26D
2026-07-01$29.45Not available in this settingRVU26C
2026-04-01$29.45Not available in this settingRVU26B
2026-01-01$29.45Not available in this settingRVU26A
2025-10-01$29.18Not available in this settingRVU25D
2025-07-01$29.18Not available in this settingRVU25C
2025-04-01$29.18Not available in this settingRVU25B
2025-01-01$29.18Not available in this settingRVU25A
2024-10-01$30.39Not available in this settingRVU24D
2024-07-01$30.39Not available in this settingRVU24C
2024-04-01$30.39Not available in this settingRVU24B
2024-03-09$30.39Not available in this settingRVU24AR
2024-01-01$29.90Not available in this settingRVU24A
2023-10-01$31.31Not available in this settingRVU23D
2023-07-01$31.31Not available in this settingRVU23C
2023-04-01$31.31Not available in this settingRVU23B
2023-01-01$31.31Not available in this settingRVU23A
2022-10-01$32.34Not available in this settingRVU22D
2022-07-01$32.34Not available in this settingRVU22C
2022-04-01$32.34Not available in this settingRVU22B
2022-01-01$32.34Not available in this settingRVU22A
2021-10-01$31.83Not available in this settingRVU21D
2021-07-01$31.83Not available in this settingRVU21C
2021-04-01$31.83Not available in this settingRVU21B
2021-01-01$31.83Not available in this settingRVU21A
2020-10-01$30.94Not available in this settingRVU20D
2020-07-01$30.94Not available in this settingRVU20C
2020-04-01$30.94Not available in this settingRVU20B
2020-01-01$30.94Not available in this settingRVU20A
2019-10-01$29.70Not available in this settingRVU19D
2019-07-01$29.70Not available in this settingRVU19C
2019-04-01$29.70Not available in this settingRVU19B
2019-01-01$29.70Not available in this settingRVU19A
2018-10-01$28.46Not available in this settingRVU18D
2018-07-01$28.46Not available in this settingRVU18C
2018-04-01$28.46Not available in this settingRVU18B
2018-01-01$28.46Not available in this settingRVU18AR1
2017-10-01$28.30Not available in this settingRVU17D
2017-07-01$28.30Not available in this settingRVU17C
2017-04-01$28.30Not available in this settingRVU17B
2017-01-01$28.30Not available in this settingRVU17A
2016-10-01$28.15Not available in this settingRVU16D
2016-07-01$28.15Not available in this settingRVU16C
2016-04-01$28.15Not available in this settingRVU16B
2016-01-01$28.15Not available in this settingRVU16A
2015-10-01$28.26Not available in this settingRVU15D
2015-07-01$28.26Not available in this settingRVU15C
2015-04-01$28.11Not available in this settingRVU15B
2015-01-01$28.11Not available in this settingRVU15A
2014-10-01$28.61Not available in this settingRVU14D
2014-07-01$28.61Not available in this settingRVU14C
2014-04-01$28.61Not available in this settingRVU14B
2014-01-01$28.61Not available in this settingRVU14A
2013-10-01$27.93Not available in this settingRVU13D
2013-07-01$27.93Not available in this settingRVU13C
2013-04-01$27.93Not available in this settingRVU13B
2013-01-01$27.93Not available in this settingRVU13AR

Price 77072 for an earlier date of service

Where the Alaska rate applies

Alaska is a Medicare payment area, not a city. Our Census mapping connects it to 355 cities and communities in Alaska. Some span more than one payment area; confirm with the service ZIP.

  • Adak
  • Akhiok
  • Akiachak
  • Akiak
  • Akutan
  • Alakanuk
  • Alatna
  • Alcan Border

Browse all communities in Alaska

77072 billing questions

How is a bone age study different from a bone length study?

This code represents assessment of skeletal maturity. Use 77073 when the requested imaging evaluates bone length, such as in a limb-length assessment.

When should modifier 26 or TC be reported?

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

What documentation supports reporting this study?

Keep the clinical reason for assessing skeletal maturity and the interpreting report. The report should document the findings relevant to the bone age assessment.

Is this a bone-density test?

No. This study assesses skeletal maturity from radiographs; bone-density studies such as DXA evaluate bone mineral density.

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 77072PPRRVU2026_Oct_nonQPP.csv, line 8,986 (RVU26D)
Geographic factors for AlaskaGPCI2026.csv, line 5 (RVU26D)

Open CMS sourceHow we calculate rates

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