CPT code 28306: Metatarsal osteotomy, first metatarsal2026 Medicare rate & RVUs in Marin County, CA

Reports a first metatarsal bone cut used to correct its alignment or length when the work is not included in a broader procedure.

CMS RVU26DEffective Oct 1, 2026One payment locality1.5K Medicare services in 2024

In Marin County, CA, Medicare pays $798.27 for 28306 in the office and $456.35 when it’s performed in a hospital or facility.

$798.27Office (non-facility)
$456.35Hospital or facility
+27.1%vs the national office rate ($628.27)

Check a contract rate as a % of Medicare · 28306 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 28306 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Marin County, CA
  2. What 28306 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 28306 covers

The surgeon makes a controlled cut in the first metatarsal and repositions or reshapes the bone to address a deformity or alignment problem. Orthopedic foot and ankle surgeons and podiatrists commonly perform this work in an operating room. The operative report should identify the bone treated, the deformity, the osteotomy performed, and the correction achieved.

Select this code for the first metatarsal when the documented work is not part of a more comprehensive procedure that includes the osteotomy. Use the graft-specific sibling when an autograft is used. The code has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in one session, the highest-valued procedure is paid in full and the others at 50%. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment may be made; co-surgeon payment requires supporting documentation, and team surgery is 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 Marin County, CA compares for 28306

Across 109 of 109 payment localities, the office rate for 28306 runs from $557.81 in Arkansas to $816.28 in San Benito County, CA. Marin County, CA pays $798.27. The RVUs are the same everywhere; the geographic indexes change the dollars.

28306 in Marin County, CA vs other payment areas
  1. Marin County, CA · this page$798.27
  2. Bakersfield, CA · California$660.20−$138.07
  3. Chico, CA · California$657.81−$140.46
  4. El Centro, CA · California$657.95−$140.32
  5. Fresno, CA · California$657.81−$140.46
  6. Hanford, CA · California$657.81−$140.46
  7. Los Angeles, CA · California$701.28−$96.99

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

Every other payment area

28306 in every other Medicare payment locality
Payment localityOfficeFacility
Madera, CACalifornia$657.81$392.04
Merced, CACalifornia$657.81$392.04
Modesto, CACalifornia$657.81$392.04
Napa, CACalifornia$756.05$436.45
Oxnard, CACalifornia$697.22$410.59
Redding, CACalifornia$657.81$392.04
Rest of CaliforniaCalifornia$657.81$392.04
Riverside, CACalifornia$666.69$400.92

28306 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.

$557.81

$740.03

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

View every state and territory as a table
28306 office rate range by state
State / territoryOffice rate rangeLocalities
AK$740.031
AL$565.701
AR$557.811
AZ$611.761
CA$657.81–$816.2829
CO$650.571
CT$669.151
DC$714.091
DE$621.621
FL$624.21–$686.773
GA$589.74–$640.852
GU$672.291
HI$672.291
IA$577.291
ID$581.401
IL$608.41–$667.134
IN$584.591
KS$575.761
KY$580.931
LA$580.49–$608.072
MA$647.33–$711.932
MD$632.84–$714.093
ME$585.48–$614.522
MI$596.53–$632.872
MN$620.751
MO$571.60–$608.863
MS$564.761
MT$628.221
NC$591.221
ND$612.001
NE$580.011
NH$641.471
NJ$676.05–$707.322
NM$600.121
NV$624.101
NY$599.86–$740.895
OH$593.211
OK$578.781
OR$618.51–$669.392
PA$593.51–$653.702
PR$632.321
RI$642.411
SC$593.351
SD$610.081
TN$578.691
TX$589.83–$649.068
UT$601.151
VA$613.33–$714.092
VI$632.321
VT$610.691
WA$645.76–$725.072
WI$592.291
WV$586.961
WY$621.151

See 28306 in every payment locality

How the 28306 rate is calculated

Each of 28306’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 · 28306

RVUs × geographic indexes × conversion factor

Office or facility?

Work5.85

5.85 RVUs× 1.000 GPCI

Practice expense12.14

12.14 RVUs× 1.000 GPCI

Malpractice0.82

0.82 RVUs× 1.000 GPCI

Adjusted RVUs

18.8100

Conversion factor

$33.4009

Medicare rate

$628.27

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

The exact Marin County, CA inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

3,183

Code
28306
Physician work
5.85
Practice expense
12.14
Malpractice
0.82

GPCI2026.csv

25

Locality
Marin County, CA
Physician work
1.095
Practice expense
1.410
Malpractice
0.459
Office calculation for 28306 in Marin County, CA
ComponentRVULocality factorAdjusted
Physician work5.85× 1.0956.4057
Practice expense12.14× 1.41017.1174
Malpractice0.82× 0.4590.3764
Total RVUs23.8995
Conversion factor× 33.4009

Office rate, Marin County, CA$798.27

Office: (5.85 × 1.095 + 12.14 × 1.41 + 0.82 × 0.459) × $33.4009 = $798.27

Facility: (5.85 × 1.095 + 4.88 × 1.41 + 0.82 × 0.459) × $33.4009 = $456.35

Open 28306 in the RVU calculator

Payment rules and modifiers for 28306

28306 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 28306

Metatarsal osteotomy, first metatarsal

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are 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)2Paid.
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.69/0.21Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 28306

Metatarsal osteotomy, first metatarsal

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

28306 without 50 · national office

$628.27

Metatarsal osteotomy, first metatarsal

28306-50 · Bilateral: 150%

$942.41

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 28306 has changed in Marin County, CA

28306 · Office / nonfacility

$798.27

Effective 2026-10-01

The base rate is $51.23 higher than on 2025-10-01, moving from $747.04 to $798.27 (6.9%).

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

    $747.04changed to$798.27

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 6.00 changed to 5.85
    • Practice expense RVU 11.41 changed to 12.14
    • Malpractice RVU 0.80 changed to 0.82
    • Work GPCI 1.088 changed to 1.095
    • Practice expense GPCI 1.419 changed to 1.410
    • Malpractice GPCI 0.470 changed to 0.459

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $775.54changed to$747.04

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 11.55 changed to 11.41
    • Malpractice RVU 0.81 changed to 0.80

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $762.88changed to$775.54

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $761.80changed to$762.88

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 11.36 changed to 11.55
    • Malpractice RVU 0.78 changed to 0.81
    • Work GPCI 1.082 changed to 1.088
    • Practice expense GPCI 1.374 changed to 1.419
    • Malpractice GPCI 0.487 changed to 0.470
  5. January 1, 2023

    RVU23A

    $749.58changed to$761.80

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 11.14 changed to 11.36
    • Work GPCI 1.077 changed to 1.082
    • Practice expense GPCI 1.329 changed to 1.374
    • Malpractice GPCI 0.504 changed to 0.487

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $749.12changed to$749.58

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 11.19 changed to 11.14
    • Malpractice RVU 0.74 changed to 0.78
    • Work GPCI 1.071 changed to 1.077
    • Practice expense GPCI 1.311 changed to 1.329

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $747.48changed to$749.12

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 10.73 changed to 11.19
    • Malpractice RVU 0.76 changed to 0.74
    • Work GPCI 1.068 changed to 1.071
    • Practice expense GPCI 1.299 changed to 1.311
    • Malpractice GPCI 0.481 changed to 0.504

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $751.50changed to$747.48

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 10.94 changed to 10.73
    • Malpractice RVU 0.74 changed to 0.76
    • Work GPCI 1.065 changed to 1.068
    • Practice expense GPCI 1.291 changed to 1.299
    • Malpractice GPCI 0.458 changed to 0.481

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $750.54changed to$751.50

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 11.05 changed to 10.94
    • Malpractice RVU 0.75 changed to 0.74
    • Work GPCI 1.062 changed to 1.065
    • Practice expense GPCI 1.279 changed to 1.291

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $742.88changed to$750.54

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 11.01 changed to 11.05
    • Work GPCI 1.058 changed to 1.062
    • Practice expense GPCI 1.271 changed to 1.279
    • Malpractice GPCI 0.477 changed to 0.458

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    No ratechanged to$742.88

    Held through RVU17B, RVU17C, RVU17D.

  12. 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.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$798.27$456.35RVU26D
2026-07-01$798.27$456.35RVU26C
2026-04-01$798.27$456.35RVU26B
2026-01-01$798.27$456.35RVU26A
2025-10-01$747.04$481.74RVU25D
2025-07-01$747.04$481.74RVU25C
2025-04-01$747.04$481.74RVU25B
2025-01-01$747.04$481.74RVU25A
2024-10-01$775.54$492.13RVU24D
2024-07-01$775.54$492.13RVU24C
2024-04-01$775.54$492.13RVU24B
2024-03-09$775.54$492.13RVU24AR
2024-01-01$762.88$484.10RVU24A
2023-10-01$761.80$481.50RVU23D
2023-07-01$761.80$481.50RVU23C
2023-04-01$761.80$481.50RVU23B
2023-01-01$761.80$481.50RVU23A
2022-10-01$749.58$471.79RVU22D
2022-07-01$749.58$471.79RVU22C
2022-04-01$749.58$471.79RVU22B
2022-01-01$749.58$471.79RVU22A
2021-10-01$749.12$463.67RVU21D
2021-07-01$749.12$463.67RVU21C
2021-04-01$749.12$463.67RVU21B
2021-01-01$749.12$463.67RVU21A
2020-10-01$747.48$469.01RVU20D
2020-07-01$747.48$469.01RVU20C
2020-04-01$747.48$469.01RVU20B
2020-01-01$747.48$469.01RVU20A
2019-10-01$751.50$469.09RVU19D
2019-07-01$751.50$469.09RVU19C
2019-04-01$751.50$469.09RVU19B
2019-01-01$751.50$469.09RVU19A
2018-10-01$750.54$467.37RVU18D
2018-07-01$750.54$467.37RVU18C
2018-04-01$750.54$467.37RVU18B
2018-01-01$750.54$467.37RVU18AR1
2017-10-01$742.88$463.26RVU17D
2017-07-01$742.88$463.26RVU17C
2017-04-01$742.88$463.26RVU17B
2017-01-01$742.88$463.26RVU17A
2016-10-01Rate data unavailableRate data unavailableRVU16D
2016-07-01Rate data unavailableRate data unavailableRVU16C
2016-04-01Rate data unavailableRate data unavailableRVU16B
2016-01-01Rate data unavailableRate data unavailableRVU16A
2015-10-01Rate data unavailableRate data unavailableRVU15D
2015-07-01Rate data unavailableRate data unavailableRVU15C
2015-04-01Rate data unavailableRate data unavailableRVU15B
2015-01-01Rate data unavailableRate data unavailableRVU15A
2014-10-01Rate data unavailableRate data unavailableRVU14D
2014-07-01Rate data unavailableRate data unavailableRVU14C
2014-04-01Rate data unavailableRate data unavailableRVU14B
2014-01-01Rate data unavailableRate data unavailableRVU14A
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 28306 for an earlier date of service

Where the Marin County, CA rate applies

Marin County, CA is a Medicare payment area, not a city. Our Census mapping connects it to 31 cities and communities in California. Some span more than one payment area; confirm with the service ZIP.

  • Alto
  • Belvedere
  • Black Point-Green Point
  • Bolinas
  • Corte Madera
  • Dillon Beach
  • Fairfax
  • Inverness

Browse all communities in California

28306 billing questions

How does 28306 differ from 28307?

Both address an osteotomy of the first metatarsal. Use 28307 when the procedure includes autograft; 28306 describes the osteotomy without that graft-specific distinction.

Can 28306 be reported with a bunion correction code?

Do not separately report 28306 for an osteotomy already included in a comprehensive bunion correction procedure, such as a procedure that includes a distal metatarsal osteotomy. The operative documentation must support distinct work before separate reporting is considered.

What documentation supports 28306?

Document the first metatarsal as the treated bone, the reason for correction, the osteotomy and any repositioning performed, and the resulting alignment. Identify any autograft, which may point to the graft-specific sibling code.

How is bilateral 28306 reported?

For procedures on both first metatarsals, report bilateral surgery with modifier 50; CMS pays the bilateral procedure at 150%.

What postoperative care is included?

The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care. Related routine follow-up during that period is included in the surgical payment.

Can an assistant or co-surgeon be paid?

Assistant-at-surgery payment may be made. Co-surgeon payment requires supporting documentation; team surgery is not permitted.

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 28306PPRRVU2026_Oct_nonQPP.csv, line 3,183 (RVU26D)
Geographic factors for Marin County, CAGPCI2026.csv, line 25 (RVU26D)

Open CMS sourceHow we calculate rates

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