CPT code 29365: Cylinder cast, knee immobilization2026 Medicare rate & RVUs in Metropolitan Boston, MA

Report 29365 when a clinician applies a cylinder cast that immobilizes the knee while leaving the foot uncovered.

CMS RVU26DEffective Oct 1, 2026One payment locality240 Medicare services in 2024

In Metropolitan Boston, MA, Medicare pays $157.69 for 29365 in the office and $89.89 when it’s performed in a hospital or facility.

$157.69Office (non-facility)
$89.89Hospital or facility
+13.5%vs the national office rate ($138.95)

Check a contract rate as a % of Medicare · 29365 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 29365 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Metropolitan Boston, MA
  2. What 29365 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 29365 covers

A cylinder cast stabilizes the knee by extending around the leg above and below the joint, while leaving the foot free. Orthopedic clinicians and emergency physicians may apply one for selected knee injuries, including patellar fractures, when the treatment plan calls for cast immobilization rather than a brace or a cast that includes the foot. The service is typically performed in an office, emergency department, or other setting where the cast can be fitted and molded.

Select 29365 for the cylinder configuration, not solely because the knee is being treated. Document the indication, laterality, and cast extent so the record shows that the foot was left uncovered. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When bilateral casts are reported with modifier 50, CMS pays at 150%. For multiple procedures in one session, the highest-valued procedure is paid in full and other procedures at 50%. Assistant-at-surgery payment is restricted; co-surgeons and team surgery are not permitted.

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 Metropolitan Boston, MA compares for 29365

Across 109 of 109 payment localities, the office rate for 29365 runs from $122.13 in Arkansas to $180.65 in San Benito County, CA. Metropolitan Boston, MA pays $157.69. The RVUs are the same everywhere; the geographic indexes change the dollars.

29365 in Metropolitan Boston, MA vs other payment areas
  1. Metropolitan Boston, MA · this page$157.69
  2. Rest of Massachusetts · Massachusetts$142.92−$14.77
  3. Los Angeles, CA · California$154.93−$2.76
  4. Washington, DC area · District of Columbia$158.42+$0.73
  5. Miami, FL · Florida$154.50−$3.19
  6. Chicago, IL · Illinois$149.63−$8.06
  7. Manhattan, NY · New York$160.95+$3.26

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

Every other payment area

29365 in every other Medicare payment locality
Payment localityOfficeFacility
AlaskaAlaska$160.74$100.27
AlabamaAlabama$124.01$74.32
ArkansasArkansas$122.13$73.35
ArizonaArizona$134.96$79.94
Bakersfield, CACalifornia$145.59$83.36
Chico, CACalifornia$144.95$82.72
El Centro, CACalifornia$144.99$82.76
Fresno, CACalifornia$144.95$82.72

29365 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.

$122.13

$162.80

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

View every state and territory as a table
29365 office rate range by state
State / territoryOffice rate rangeLocalities
AK$160.741
AL$124.011
AR$122.131
AZ$134.961
CA$144.95–$180.6529
CO$143.671
CT$148.481
DC$158.421
DE$137.251
FL$138.73–$154.503
GA$130.39–$142.092
GU$148.431
HI$148.431
IA$126.421
ID$127.471
IL$135.19–$149.634
IN$128.221
KS$126.221
KY$127.991
LA$127.95–$134.512
MA$142.92–$157.692
MD$139.82–$158.423
ME$128.62–$135.282
MI$131.86–$140.972
MN$136.231
MO$125.93–$134.513
MS$124.041
MT$138.931
NC$129.951
ND$134.381
NE$127.021
NH$141.791
NJ$149.77–$156.752
NM$132.781
NV$137.761
NY$132.02–$165.545
OH$130.931
OK$127.301
OR$136.29–$147.902
PA$130.91–$144.932
PR$139.851
RI$141.911
SC$130.741
SD$133.851
TN$126.941
TX$130.05–$143.538
UT$132.591
VA$135.11–$158.422
VI$139.851
VT$134.221
WA$142.53–$160.542
WI$129.731
WV$130.091
WY$136.951

See 29365 in every payment locality

How the 29365 rate is calculated

Each of 29365’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 · 29365

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.15

1.15 RVUs× 1.000 GPCI

Practice expense2.78

2.78 RVUs× 1.000 GPCI

Malpractice0.23

0.23 RVUs× 1.000 GPCI

Adjusted RVUs

4.1600

Conversion factor

$33.4009

Medicare rate

$138.95

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

The exact Metropolitan Boston, MA inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

3,290

Code
29365
Physician work
1.15
Practice expense
2.78
Malpractice
0.23

GPCI2026.csv

62

Locality
Metropolitan Boston, MA
Physician work
1.041
Practice expense
1.194
Malpractice
0.890
Office calculation for 29365 in Metropolitan Boston, MA
ComponentRVULocality factorAdjusted
Physician work1.15× 1.0411.1971
Practice expense2.78× 1.1943.3193
Malpractice0.23× 0.8900.2047
Total RVUs4.7212
Conversion factor× 33.4009

Office rate, Metropolitan Boston, MA$157.69

Office: (1.15 × 1.041 + 2.78 × 1.194 + 0.23 × 0.89) × $33.4009 = $157.69

Facility: (1.15 × 1.041 + 1.08 × 1.194 + 0.23 × 0.89) × $33.4009 = $89.89

Open 29365 in the RVU calculator

Payment rules and modifiers for 29365

The CMS indicators that decide how 29365 is paid alongside other services.

CMS payment indicators · 29365

Cylinder cast, knee immobilization

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

29365 without 50 · national office

$138.95

Cylinder cast, knee immobilization

29365-50 · Bilateral: 150%

$208.43

Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).

When to use modifier 50

How 29365 has changed in Metropolitan Boston, MA

29365 · Office / nonfacility

$157.69

Effective 2026-10-01

The base rate is $16.41 higher than on 2025-10-01, moving from $141.28 to $157.69 (11.6%).

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

    $141.28changed to$157.69

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 1.18 changed to 1.15
    • Practice expense RVU 2.45 changed to 2.78
    • Work GPCI 1.042 changed to 1.041
    • Practice expense GPCI 1.197 changed to 1.194
    • Malpractice GPCI 0.894 changed to 0.890

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $143.70changed to$141.28

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 2.40 changed to 2.45
    • Malpractice RVU 0.24 changed to 0.23

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $141.35changed to$143.70

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $142.89changed to$141.35

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 2.32 changed to 2.40
    • Malpractice RVU 0.23 changed to 0.24
    • Work GPCI 1.045 changed to 1.042
    • Practice expense GPCI 1.200 changed to 1.197
    • Malpractice GPCI 0.868 changed to 0.894
  5. January 1, 2023

    RVU23A

    $140.59changed to$142.89

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 2.18 changed to 2.32
    • Malpractice RVU 0.24 changed to 0.23
    • Work GPCI 1.049 changed to 1.045
    • Practice expense GPCI 1.203 changed to 1.200
    • Malpractice GPCI 0.842 changed to 0.868

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $139.48changed to$140.59

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 2.14 changed to 2.18
    • Malpractice RVU 0.22 changed to 0.24

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $140.78changed to$139.48

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 2.06 changed to 2.14
    • Malpractice RVU 0.23 changed to 0.22
    • Work GPCI 1.041 changed to 1.049
    • Practice expense GPCI 1.191 changed to 1.203
    • Malpractice GPCI 0.952 changed to 0.842

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $141.15changed to$140.78

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 2.09 changed to 2.06
    • Malpractice RVU 0.22 changed to 0.23
    • Work GPCI 1.033 changed to 1.041
    • Practice expense GPCI 1.179 changed to 1.191
    • Malpractice GPCI 1.061 changed to 0.952

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $142.69changed to$141.15

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 2.13 changed to 2.09

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $138.71changed to$142.69

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 2.11 changed to 2.13
    • Work GPCI 1.025 changed to 1.033
    • Practice expense GPCI 1.171 changed to 1.179
    • Malpractice GPCI 0.839 changed to 1.061

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $135.69changed to$138.71

    • Conversion factor 35.8043 changed to 35.8887
    • Work GPCI 1.017 changed to 1.025
    • Practice expense GPCI 1.163 changed to 1.171
    • Malpractice GPCI 0.617 changed to 0.839

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $136.60changed to$135.69

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 2.12 changed to 2.11

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $135.92changed to$136.60

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $135.46changed to$135.92

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 2.10 changed to 2.12
    • Work GPCI 1.016 changed to 1.017
    • Practice expense GPCI 1.156 changed to 1.163
    • Malpractice GPCI 0.704 changed to 0.617

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    No ratechanged to$135.46

    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$157.69$89.89RVU26D
2026-07-01$157.69$89.89RVU26C
2026-04-01$157.69$89.89RVU26B
2026-01-01$157.69$89.89RVU26A
2025-10-01$141.28$94.82RVU25D
2025-07-01$141.28$94.82RVU25C
2025-04-01$141.28$94.82RVU25B
2025-01-01$141.28$94.82RVU25A
2024-10-01$143.70$97.08RVU24D
2024-07-01$143.70$97.08RVU24C
2024-04-01$143.70$97.08RVU24B
2024-03-09$143.70$97.08RVU24AR
2024-01-01$141.35$95.50RVU24A
2023-10-01$142.89$96.94RVU23D
2023-07-01$142.89$96.94RVU23C
2023-04-01$142.89$96.94RVU23B
2023-01-01$142.89$96.94RVU23A
2022-10-01$140.59$97.29RVU22D
2022-07-01$140.59$97.29RVU22C
2022-04-01$140.59$97.29RVU22B
2022-01-01$140.59$97.29RVU22A
2021-10-01$139.48$97.09RVU21D
2021-07-01$139.48$97.09RVU21C
2021-04-01$139.48$97.09RVU21B
2021-01-01$139.48$97.09RVU21A
2020-10-01$140.78$99.09RVU20D
2020-07-01$140.78$99.09RVU20C
2020-04-01$140.78$99.09RVU20B
2020-01-01$140.78$99.09RVU20A
2019-10-01$141.15$99.51RVU19D
2019-07-01$141.15$99.51RVU19C
2019-04-01$141.15$99.51RVU19B
2019-01-01$141.15$99.51RVU19A
2018-10-01$142.69$100.25RVU18D
2018-07-01$142.69$100.25RVU18C
2018-04-01$142.69$100.25RVU18B
2018-01-01$142.69$100.25RVU18AR1
2017-10-01$138.71$97.10RVU17D
2017-07-01$138.71$97.10RVU17C
2017-04-01$138.71$97.10RVU17B
2017-01-01$138.71$97.10RVU17A
2016-10-01$135.69$94.46RVU16D
2016-07-01$135.69$94.46RVU16C
2016-04-01$135.69$94.46RVU16B
2016-01-01$135.69$94.46RVU16A
2015-10-01$136.60$94.81RVU15D
2015-07-01$136.60$94.81RVU15C
2015-04-01$135.92$94.33RVU15B
2015-01-01$135.92$94.33RVU15A
2014-10-01$135.46$94.88RVU14D
2014-07-01$135.46$94.88RVU14C
2014-04-01$135.46$94.88RVU14B
2014-01-01$135.46$94.88RVU14A
2013-10-01Rate data unavailableRate data unavailableRVU13D
2013-07-01Rate data unavailableRate data unavailableRVU13C
2013-04-01Rate data unavailableRate data unavailableRVU13B
2013-01-01Rate data unavailableRate data unavailableRVU13AR

Price 29365 for an earlier date of service

Where the Metropolitan Boston, MA rate applies

Metropolitan Boston, MA is a Medicare payment area, not a city. Our Census mapping connects it to 60 cities and communities in Massachusetts. Some span more than one payment area; confirm with the service ZIP.

  • Boston
  • Arlington
  • Ayer
  • Bellingham
  • Belmont
  • Braintree Town
  • Brookline
  • Burlington

Browse all communities in Massachusetts

29365 billing questions

How does a cylinder cast differ from a long leg cast?

A cylinder cast immobilizes the knee while leaving the foot uncovered. A long leg cast extends to the foot; select based on the cast actually applied.

Can 29365 be reported for casts on both knees?

For bilateral cylinder casts, report modifier 50. CMS pays bilateral procedures at 150%.

Does the 0-day global period include same-day care?

Yes. Same-day preoperative and postoperative care is included in the procedure's 0-day global period.

Can an assistant or co-surgeon be reported?

CMS does not pay an assistant at surgery for this code. Co-surgeons and team surgery are not permitted.

What documentation supports choosing 29365?

Record the knee-related indication, laterality, and cast configuration and extent, including that the foot remains uncovered.

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 29365PPRRVU2026_Oct_nonQPP.csv, line 3,290 (RVU26D)
Geographic factors for Metropolitan Boston, MAGPCI2026.csv, line 62 (RVU26D)

Open CMS sourceHow we calculate rates

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