CPT code 28100: Bone lesion excision, talus or calcaneus2026 Medicare rate & RVUs in South Dakota

Reports surgical curettage or excision of a bone cyst or benign tumor in the talus or calcaneus when the lesion is treated without a graft.

CMS RVU26DEffective Oct 1, 2026One payment locality478 Medicare services in 2024

In South Dakota, Medicare pays $625.57 for 28100 in the office and $383.74 when it’s performed in a hospital or facility.

$625.57Office (non-facility)
$383.74Hospital or facility
−3.1%vs the national office rate ($645.31)

Check a contract rate as a % of Medicare · 28100 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 28100 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in South Dakota
  2. What 28100 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 28100 covers

This service removes or curettes a bone cyst or benign tumor in the talus or calcaneus. An orthopedic surgeon or podiatric surgeon typically performs it in an operating room, using an approach that exposes the affected bone and allows the lesion to be treated. The operative report should identify the bone and lesion and describe the work performed; the code is for these two bones, not other tarsal bones or toe bones.

Select this code when the lesion is in the talus or calcaneus and the procedure does not use a graft; grafted procedures have separate sibling codes. Document the diagnosis, exact site, and whether grafting was performed. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. In a same-session multiple-procedure claim, the highest-valued procedure is paid in full and other procedures 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 South Dakota compares for 28100

Across 109 of 109 payment localities, the office rate for 28100 runs from $570.84 in Arkansas to $840.61 in San Benito County, CA. South Dakota pays $625.57. The RVUs are the same everywhere; the geographic indexes change the dollars.

28100 in South Dakota vs other payment areas
  1. South Dakota · this page$625.57
  2. Los Angeles, CA · California$721.03+$95.46
  3. Washington, DC area · District of Columbia$734.71+$109.14
  4. Miami, FL · Florida$708.22+$82.65
  5. Chicago, IL · Illinois$687.26+$61.69
  6. Manhattan, NY · New York$743.86+$118.29
  7. Alaska · Alaska$754.50+$128.93

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

Every other payment area

28100 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$579.17$367.58
ArkansasArkansas$570.84$363.12
ArizonaArizona$627.82$393.50
Bakersfield, CACalifornia$678.17$413.13
Chico, CACalifornia$675.62$410.58
El Centro, CACalifornia$675.77$410.73
Fresno, CACalifornia$675.62$410.58
Hanford, CACalifornia$675.62$410.58

28100 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.

$570.84

$758.12

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

View every state and territory as a table
28100 office rate range by state
State / territoryOffice rate rangeLocalities
AK$754.501
AL$579.171
AR$570.841
AZ$627.821
CA$675.62–$840.6129
CO$668.331
CT$688.131
DC$734.711
DE$638.141
FL$641.52–$708.223
GA$605.02–$658.662
GU$691.131
HI$691.131
IA$591.181
ID$595.571
IL$624.99–$687.264
IN$598.941
KS$589.681
KY$595.511
LA$595.08–$624.222
MA$664.88–$732.432
MD$649.88–$734.713
ME$600.00–$630.502
MI$612.09–$650.792
MN$636.731
MO$585.76–$624.923
MS$578.351
MT$645.251
NC$606.041
ND$627.651
NE$594.021
NH$659.051
NJ$694.96–$727.422
NM$615.931
NV$640.771
NY$615.18–$763.415
OH$608.491
OK$593.111
OR$634.77–$688.002
PA$608.75–$671.922
PR$649.541
RI$659.751
SC$608.481
SD$625.571
TN$592.791
TX$604.87–$667.008
UT$616.721
VA$629.33–$734.712
VI$649.541
VT$626.361
WA$663.24–$746.022
WI$606.851
WV$602.331
WY$637.581

See 28100 in every payment locality

How the 28100 rate is calculated

Each of 28100’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 · 28100

RVUs × geographic indexes × conversion factor

Office or facility?

Work5.68

5.68 RVUs× 1.000 GPCI

Practice expense12.75

12.75 RVUs× 1.000 GPCI

Malpractice0.89

0.89 RVUs× 1.000 GPCI

Adjusted RVUs

19.3200

Conversion factor

$33.4009

Medicare rate

$645.31

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

The exact South Dakota inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

3,117

Code
28100
Physician work
5.68
Practice expense
12.75
Malpractice
0.89

GPCI2026.csv

94

Locality
South Dakota
Physician work
1.000
Practice expense
1.000
Malpractice
0.336
Office calculation for 28100 in South Dakota
ComponentRVULocality factorAdjusted
Physician work5.68× 1.0005.6800
Practice expense12.75× 1.00012.7500
Malpractice0.89× 0.3360.2990
Total RVUs18.7290
Conversion factor× 33.4009

Office rate, South Dakota$625.57

Office: (5.68 × 1 + 12.75 × 1 + 0.89 × 0.336) × $33.4009 = $625.57

Facility: (5.68 × 1 + 5.51 × 1 + 0.89 × 0.336) × $33.4009 = $383.74

Open 28100 in the RVU calculator

Payment rules and modifiers for 28100

28100 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 28100

Bone lesion excision, talus or calcaneus

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 · 28100

Bone lesion excision, talus or calcaneus

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

28100 without 50 · national office

$645.31

Bone lesion excision, talus or calcaneus

28100-50 · Bilateral: 150%

$967.96

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 28100 has changed in South Dakota

28100 · Office / nonfacility

$625.57

Effective 2026-10-01

The base rate is $45.17 higher than on 2025-10-01, moving from $580.40 to $625.57 (7.8%).

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

    $580.40changed to$625.57

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 5.83 changed to 5.68
    • Practice expense RVU 11.80 changed to 12.75
    • Malpractice RVU 0.82 changed to 0.89
    • Malpractice GPCI 0.382 changed to 0.336

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $595.62changed to$580.40

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 11.75 changed to 11.80

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $585.90changed to$595.62

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $602.83changed to$585.90

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 11.65 changed to 11.75
    • Malpractice RVU 0.85 changed to 0.82
    • Malpractice GPCI 0.364 changed to 0.382
  5. January 1, 2023

    RVU23A

    $612.01changed to$602.83

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 11.56 changed to 11.65
    • Malpractice GPCI 0.347 changed to 0.364

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $622.15changed to$612.01

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 11.74 changed to 11.56
    • Malpractice RVU 0.75 changed to 0.85

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $617.88changed to$622.15

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 11.00 changed to 11.74
    • Malpractice RVU 0.79 changed to 0.75
    • Malpractice GPCI 0.368 changed to 0.347

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $620.44changed to$617.88

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 11.09 changed to 11.00
    • Malpractice RVU 0.76 changed to 0.79
    • Malpractice GPCI 0.389 changed to 0.368

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $620.98changed to$620.44

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 11.12 changed to 11.09
    • Malpractice RVU 0.77 changed to 0.76

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $611.91changed to$620.98

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 10.92 changed to 11.12
    • Malpractice RVU 0.76 changed to 0.77
    • Malpractice GPCI 0.395 changed to 0.389

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $610.53changed to$611.91

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 10.91 changed to 10.92
    • Malpractice RVU 0.78 changed to 0.76
    • Malpractice GPCI 0.400 changed to 0.395

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $617.19changed to$610.53

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 11.03 changed to 10.91
    • Malpractice RVU 0.79 changed to 0.78

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $614.12changed to$617.19

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $605.54changed to$614.12

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 10.77 changed to 11.03
    • Malpractice RVU 0.73 changed to 0.79
    • Malpractice GPCI 0.416 changed to 0.400

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $620.52changed to$605.54

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 12.08 changed to 10.77
    • Malpractice RVU 0.76 changed to 0.73
    • Malpractice GPCI 0.432 changed to 0.416

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $620.52

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$625.57$383.74RVU26D
2026-07-01$625.57$383.74RVU26C
2026-04-01$625.57$383.74RVU26B
2026-01-01$625.57$383.74RVU26A
2025-10-01$580.40$398.61RVU25D
2025-07-01$580.40$398.61RVU25C
2025-04-01$580.40$398.61RVU25B
2025-01-01$580.40$398.61RVU25A
2024-10-01$595.62$404.88RVU24D
2024-07-01$595.62$404.88RVU24C
2024-04-01$595.62$404.88RVU24B
2024-03-09$595.62$404.88RVU24AR
2024-01-01$585.90$398.28RVU24A
2023-10-01$602.83$406.63RVU23D
2023-07-01$602.83$406.63RVU23C
2023-04-01$602.83$406.63RVU23B
2023-01-01$602.83$406.63RVU23A
2022-10-01$612.01$410.25RVU22D
2022-07-01$612.01$410.25RVU22C
2022-04-01$612.01$410.25RVU22B
2022-01-01$612.01$410.25RVU22A
2021-10-01$622.15$409.65RVU21D
2021-07-01$622.15$409.65RVU21C
2021-04-01$622.15$409.65RVU21B
2021-01-01$622.15$409.65RVU21A
2020-10-01$617.88$414.33RVU20D
2020-07-01$617.88$414.33RVU20C
2020-04-01$617.88$414.33RVU20B
2020-01-01$617.88$414.33RVU20A
2019-10-01$620.44$414.65RVU19D
2019-07-01$620.44$414.65RVU19C
2019-04-01$620.44$414.65RVU19B
2019-01-01$620.44$414.65RVU19A
2018-10-01$620.98$413.98RVU18D
2018-07-01$620.98$413.98RVU18C
2018-04-01$620.98$413.98RVU18B
2018-01-01$620.98$413.98RVU18AR1
2017-10-01$611.91$409.86RVU17D
2017-07-01$611.91$409.86RVU17C
2017-04-01$611.91$409.86RVU17B
2017-01-01$611.91$409.86RVU17A
2016-10-01$610.53$408.60RVU16D
2016-07-01$610.53$408.60RVU16C
2016-04-01$610.53$408.60RVU16B
2016-01-01$610.53$408.60RVU16A
2015-10-01$617.19$412.37RVU15D
2015-07-01$617.19$412.37RVU15C
2015-04-01$614.12$410.32RVU15B
2015-01-01$614.12$410.32RVU15A
2014-10-01$605.54$406.00RVU14D
2014-07-01$605.54$406.00RVU14C
2014-04-01$605.54$406.00RVU14B
2014-01-01$605.54$406.00RVU14A
2013-10-01$620.52$405.50RVU13D
2013-07-01$620.52$405.50RVU13C
2013-04-01$620.52$405.50RVU13B
2013-01-01$620.52$405.50RVU13AR

Price 28100 for an earlier date of service

Where the South Dakota rate applies

South Dakota is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in South Dakota. Some span more than one payment area; confirm with the service ZIP.

  • Aberdeen
  • Agar
  • Agency Village
  • Akaska
  • Albee
  • Alcester
  • Alexandria
  • Allen

Browse all communities in South Dakota

28100 billing questions

When should I choose this code instead of 28102 or 28103?

Use 28100 for a talus or calcaneus lesion treated without a graft. Codes 28102 and 28103 are the grafted sibling procedures.

Can I report this for a lesion in another tarsal bone?

No. This code is specific to the talus or calcaneus. Code 28104 is for a bone cyst or benign tumor in another tarsal bone.

Is routine postoperative care separately reported?

Related postoperative care during the 90-day global period is included, as is the day-before preoperative visit.

How is bilateral surgery paid?

CMS lists bilateral reporting with modifier 50 at 150% payment. Document the procedure on both sides.

Can an assistant or co-surgeon be reported?

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 28100PPRRVU2026_Oct_nonQPP.csv, line 3,117 (RVU26D)
Geographic factors for South DakotaGPCI2026.csv, line 94 (RVU26D)

Open CMS sourceHow we calculate rates

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