Billing code 28312: Toe osteotomyMedicare rate & RVUs

Reports surgical reshaping of a lesser toe’s proximal phalanx to correct shortening, angular alignment, or rotation when an osseous correction is performed.

CMS RVU26DEffective Oct 1, 2026109 payment localities2K Medicare services in 2024

Medicare pays $595.87 for 28312 nationally in the office and $346.70 in a hospital or facility. Local office rates run $525.10–$786.78.

Medicare rate · 28312

Toe osteotomy

Swap in your local Medicare rate.

Work RVUs
4.57
Total RVUs
17.84
Global days
090

National rate · 2026

$595.87

Office setting, before claim adjustments.

See every locality for 28312 → · Billed by an NP, PA or therapist? →

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

On this page 10 sections
  1. Medicare rate
  2. What 28312 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What 28312 covers

This procedure reshapes the proximal phalanx of a toe other than the great toe to correct a bony alignment problem, such as angular or rotational deformity. An orthopedic foot and ankle surgeon or podiatric surgeon typically performs it in an operating room, often as part of forefoot reconstruction. The operative report should identify the treated lesser toe, the phalanx addressed, the deformity, and the osteotomy and correction performed.

Report this code for the proximal-phalanx osteotomy, not merely because a toe deformity was treated. The 90-day global period includes the day-before preoperative visit and related postoperative care for 90 days. When multiple procedures are performed in the same session, Medicare pays the highest-valued procedure in full and reduces the others to 50%. Modifier 50 is inappropriate for this code. Medicare does not pay an assistant at surgery; 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.

Where 28312 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 payment localities

$525.10 to $786.78

$525.10$655.94$786.78
One dot per payment locality, office / nonfacility. Hover a dot to see the locality; select it to open that rate.

109 of 109 payment localities

28312 office and facility rates by payment locality
Payment localityOfficeFacility
Alabama$533.04$315.01
Alaska*$688.64$423.28
Arizona$579.41$337.97
Arkansas$525.10$311.07
Atlanta$607.87$354.71
Austin$617.75$354.13
Bakersfield$629.61$356.52
Baltimore/Surr. Cntys$634.61$367.25
Beaumont$556.44$329.69
Brazoria$588.03$341.10

28312 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

$525.10

$707.17

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

View every state and territory as a table
28312 office rate range by state
State / territoryOffice rate rangeLocalities
AK$688.641
AL$533.041
AR$525.101
AZ$579.411
CA$627.55–$786.7829
CO$619.261
CT$636.251
DC$681.451
DE$589.181
FL$589.52–$649.833
GA$555.22–$607.872
GU$643.181
HI$643.181
IA$545.741
ID$549.661
IL$572.94–$630.184
IN$552.911
KS$543.701
KY$547.301
LA$546.66–$574.412
MA$615.65–$680.812
MD$600.46–$681.453
ME$553.25–$583.232
MI$562.51–$597.702
MN$591.101
MO$537.40–$575.803
MS$531.331
MT$595.821
NC$559.111
ND$581.591
NE$548.641
NH$610.051
NJ$642.88–$674.192
NM$565.911
NV$592.281
NY$567.77–$705.485
OH$559.601
OK$545.661
OR$587.05–$638.692
PA$560.18–$620.452
PR$600.121
RI$610.011
SC$560.411
SD$579.901
TN$546.591
TX$556.44–$617.758
UT$568.271
VA$581.68–$681.452
VI$600.121
VT$579.801
WA$614.33–$694.262
WI$561.621
WV$551.321
WY$589.621

How the 28312 rate is calculated

Each of 28312’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 · 28312

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 4.57Practice expense 12.55Malpractice 0.72

17.8400 adjusted RVUs×$33.4009 conversion factor=$595.87

All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.

Payment rules and modifiers for 28312

28312 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 28312

Toe osteotomy

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)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
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 · 28312

Toe osteotomy

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.

  • 24 Unrelated E/M visit by the same physician
  • 79 Unrelated procedure (starts its own global period)
  • 58 Staged, more extensive, or therapy procedure that was planned
  • 78 Unplanned 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 51 · payment effect

With and without the modifier

28312 without 51 · national office

$595.87

Toe osteotomy

28312-51 · Second procedure: 50%

$297.94

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

28312 compared with similar codes

Compare codes

28312 vs 28310 vs 28313 vs 28285 vs 28308: national Medicare rates

Swap in your local Medicare rate.

  • 28312
    Toe osteotomy · 4.57 wRVU
    $595.87
  • 28310
    Toe osteotomy · 5.43 wRVU
    $565.14−$30.73
  • 28313
    Toe deformity repair · 5.02 wRVU
    $545.77−$50.10
  • 28285
    Hammertoe repair · 5.48 wRVU
    $548.44−$47.43
  • 28308
    Metatarsal osteotomy · 5.34 wRVU
    $585.52−$10.35

How to choose

28310Toe osteotomy
28310 addresses the proximal phalanx of the great toe. This code addresses a toe other than the great toe.
28313Toe deformity repair
28313 is for toe deformity reconstruction using soft-tissue procedures only. This code represents a bony osteotomy of a lesser toe’s proximal phalanx.
28285Hammertoe repair
28285 is used for hammertoe correction. Choose between the codes based on the documented procedure; a hammertoe diagnosis by itself does not establish a proximal-phalanx osteotomy.
28308Metatarsal osteotomy
28308 addresses an osteotomy of a metatarsal. This code addresses the proximal phalanx of a lesser toe.

28312 billing questions

When is this code appropriate instead of 28310?

Use 28312 for a proximal-phalanx osteotomy of a toe other than the great toe. Code 28310 is for the great toe’s proximal phalanx.

Does a hammertoe diagnosis alone support this code?

No. Documentation should establish that the surgeon performed a proximal-phalanx osteotomy to correct the lesser toe’s bony alignment. A hammertoe procedure without that osteotomy does not establish the service.

Can this be reported with a metatarsal osteotomy?

It may be reported with a metatarsal osteotomy when both distinct bony corrections are performed and documented. Same-session procedures are subject to Medicare’s multiple procedure reduction.

Can modifier 50 be used when both feet are treated?

No. CMS identifies bilateral adjustment as inappropriate for this code. Follow the applicable reporting instructions for services performed on separate toes or feet.

How does the global period affect postoperative visits?

The 90-day global period includes the day-before preoperative visit and related postoperative care during the 90 days after surgery.

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 28312PPRRVU2026_Oct_nonQPP.csv, line 3,188 (RVU26D)

Open CMS sourceHow we calculate rates

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