CPT code 28050: Joint biopsy, foot joint lining2026 Medicare rate & RVUs in South Carolina

Report this procedure when a surgeon samples the lining of a foot joint for diagnostic evaluation rather than removing the lining therapeutically.

CMS RVU26DEffective Oct 1, 2026One payment locality53 Medicare services in 2024

In South Carolina, Medicare pays $386.16 for 28050 in the office and $253.15 when it’s performed in a hospital or facility.

$386.16Office (non-facility)
$253.15Hospital or facility
−5.2%vs the national office rate ($407.16)

Check a contract rate as a % of Medicare · 28050 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 28050 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in South Carolina
  2. What 28050 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 28050 covers

A surgeon obtains tissue from the lining of a foot joint so it can be examined for causes of joint disease, such as unexplained inflammation or suspected infection. Orthopedic surgeons and podiatrists may perform the biopsy in an operating room or another surgical setting. The sampled tissue may be sent for pathology or other appropriate testing. This service concerns a foot joint; a biopsy of a toe joint is represented separately.

Select the code based on the documented joint and the procedure actually performed. The operative note should identify the foot joint, the tissue sampled, and the diagnostic purpose; a therapeutic removal of joint lining is a different service. This 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 the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. For bilateral reporting, modifier 50 is paid at 150%. Medicare does not pay an assistant at surgery; co-surgeons require 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 Carolina compares for 28050

Across 109 of 109 payment localities, the office rate for 28050 runs from $365.65 in Arkansas to $528.46 in San Benito County, CA. South Carolina pays $386.16. The RVUs are the same everywhere; the geographic indexes change the dollars.

28050 in South Carolina vs other payment areas
  1. South Carolina · this page$386.16
  2. Los Angeles, CA · California$454.95+$68.79
  3. Washington, DC area · District of Columbia$461.10+$74.94
  4. Miami, FL · Florida$436.38+$50.22
  5. Chicago, IL · Illinois$425.42+$39.26
  6. Manhattan, NY · New York$464.35+$78.19
  7. Alaska · Alaska$489.46+$103.30

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

Every other payment area

28050 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$370.31$244.35
ArkansasArkansas$365.65$241.99
ArizonaArizona$397.57$258.08
Bakersfield, CACalifornia$429.22$271.44
Chico, CACalifornia$428.03$270.25
El Centro, CACalifornia$428.09$270.31
Fresno, CACalifornia$428.03$270.25
Hanford, CACalifornia$428.03$270.25

28050 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.

$365.65

$489.46

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

View every state and territory as a table
28050 office rate range by state
State / territoryOffice rate rangeLocalities
AK$489.461
AL$370.311
AR$365.651
AZ$397.571
CA$428.03–$528.4629
CO$422.281
CT$432.001
DC$461.101
DE$403.601
FL$402.29–$436.383
GA$382.33–$414.102
GU$436.461
HI$436.461
IA$378.301
ID$380.501
IL$392.20–$425.424
IN$382.421
KS$376.851
KY$378.151
LA$377.68–$393.982
MA$420.28–$460.522
MD$410.60–$461.103
ME$382.34–$400.332
MI$386.84–$406.822
MN$405.761
MO$372.08–$395.093
MS$368.931
MT$407.131
NC$385.821
ND$399.821
NE$380.081
NH$415.941
NJ$437.24–$457.302
NM$388.741
NV$405.341
NY$390.89–$474.505
OH$385.351
OK$377.451
OR$402.48–$434.242
PA$385.83–$422.442
PR$409.741
RI$416.851
SC$386.161
SD$398.951
TN$378.521
TX$383.61–$420.648
UT$390.791
VA$399.24–$461.102
VI$409.741
VT$398.531
WA$419.41–$469.212
WI$388.031
WV$379.491
WY$403.941

See 28050 in every payment locality

How the 28050 rate is calculated

Each of 28050’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 · 28050

RVUs × geographic indexes × conversion factor

Office or facility?

Work4.28

4.28 RVUs× 1.000 GPCI

Practice expense7.54

7.54 RVUs× 1.000 GPCI

Malpractice0.37

0.37 RVUs× 1.000 GPCI

Adjusted RVUs

12.1900

Conversion factor

$33.4009

Medicare rate

$407.16

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

The exact South Carolina inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

3,104

Code
28050
Physician work
4.28
Practice expense
7.54
Malpractice
0.37

GPCI2026.csv

93

Locality
South Carolina
Physician work
1.000
Practice expense
0.924
Malpractice
0.850
Office calculation for 28050 in South Carolina
ComponentRVULocality factorAdjusted
Physician work4.28× 1.0004.2800
Practice expense7.54× 0.9246.9670
Malpractice0.37× 0.8500.3145
Total RVUs11.5615
Conversion factor× 33.4009

Office rate, South Carolina$386.16

Office: (4.28 × 1 + 7.54 × 0.924 + 0.37 × 0.85) × $33.4009 = $386.16

Facility: (4.28 × 1 + 3.23 × 0.924 + 0.37 × 0.85) × $33.4009 = $253.15

Open 28050 in the RVU calculator

Payment rules and modifiers for 28050

28050 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 28050

Joint biopsy, foot joint lining

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)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 · 28050

Joint biopsy, foot joint lining

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

28050 without 50 · national office

$407.16

Joint biopsy, foot joint lining

28050-50 · Bilateral: 150%

$610.74

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 28050 has changed in South Carolina

28050 · Office / nonfacility

$386.16

Effective 2026-10-01

The base rate is $7.81 higher than on 2025-10-01, moving from $378.35 to $386.16 (2.1%).

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

    $378.35changed to$386.16

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 4.39 changed to 4.28
    • Practice expense RVU 7.69 changed to 7.54
    • Malpractice RVU 0.35 changed to 0.37
    • Practice expense GPCI 0.913 changed to 0.924
    • Malpractice GPCI 0.817 changed to 0.850

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $390.88changed to$378.35

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 7.74 changed to 7.69

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $384.50changed to$390.88

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $391.58changed to$384.50

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 7.60 changed to 7.74
    • Practice expense GPCI 0.908 changed to 0.913
    • Malpractice GPCI 0.756 changed to 0.817
  5. January 1, 2023

    RVU23A

    $395.72changed to$391.58

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 7.54 changed to 7.60
    • Malpractice RVU 0.34 changed to 0.35
    • Practice expense GPCI 0.903 changed to 0.908
    • Malpractice GPCI 0.695 changed to 0.756

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $403.41changed to$395.72

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 7.68 changed to 7.54

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $409.95changed to$403.41

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 7.45 changed to 7.68
    • Practice expense GPCI 0.907 changed to 0.903
    • Malpractice GPCI 0.624 changed to 0.695

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $412.67changed to$409.95

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 7.56 changed to 7.45
    • Malpractice RVU 0.30 changed to 0.34
    • Practice expense GPCI 0.912 changed to 0.907
    • Malpractice GPCI 0.553 changed to 0.624

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $412.35changed to$412.67

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 7.57 changed to 7.56
    • Malpractice RVU 0.29 changed to 0.30

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $457.61changed to$412.35

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 8.82 changed to 7.57
    • Malpractice RVU 0.50 changed to 0.29
    • Malpractice GPCI 0.634 changed to 0.553

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $411.72changed to$457.61

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 7.56 changed to 8.82
    • Malpractice RVU 0.30 changed to 0.50
    • Malpractice GPCI 0.715 changed to 0.634

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $466.48changed to$411.72

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 9.17 changed to 7.56
    • Malpractice RVU 0.32 changed to 0.30

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $464.16changed to$466.48

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $408.58changed to$464.16

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 7.45 changed to 9.17
    • Malpractice RVU 0.37 changed to 0.32
    • Practice expense GPCI 0.911 changed to 0.912
    • Malpractice GPCI 0.618 changed to 0.715

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $408.62changed to$408.58

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 8.16 changed to 7.45
    • Malpractice RVU 0.39 changed to 0.37
    • Practice expense GPCI 0.909 changed to 0.911
    • Malpractice GPCI 0.520 changed to 0.618

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $408.62

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$386.16$253.15RVU26D
2026-07-01$386.16$253.15RVU26C
2026-04-01$386.16$253.15RVU26B
2026-01-01$386.16$253.15RVU26A
2025-10-01$378.35$262.88RVU25D
2025-07-01$378.35$262.88RVU25C
2025-04-01$378.35$262.88RVU25B
2025-01-01$378.35$262.88RVU25A
2024-10-01$390.88$268.40RVU24D
2024-07-01$390.88$268.40RVU24C
2024-04-01$390.88$268.40RVU24B
2024-03-09$390.88$268.40RVU24AR
2024-01-01$384.50$264.02RVU24A
2023-10-01$391.58$266.96RVU23D
2023-07-01$391.58$266.96RVU23C
2023-04-01$391.58$266.96RVU23B
2023-01-01$391.58$266.96RVU23A
2022-10-01$395.72$266.97RVU22D
2022-07-01$395.72$266.97RVU22C
2022-04-01$395.72$266.97RVU22B
2022-01-01$395.72$266.97RVU22A
2021-10-01$403.41$267.61RVU21D
2021-07-01$403.41$267.61RVU21C
2021-04-01$403.41$267.61RVU21B
2021-01-01$403.41$267.61RVU21A
2020-10-01$409.95$274.11RVU20D
2020-07-01$409.95$274.11RVU20C
2020-04-01$409.95$274.11RVU20B
2020-01-01$409.95$274.11RVU20A
2019-10-01$412.67$274.63RVU19D
2019-07-01$412.67$274.63RVU19C
2019-04-01$412.67$274.63RVU19B
2019-01-01$412.67$274.63RVU19A
2018-10-01$412.35$274.13RVU18D
2018-07-01$412.35$274.13RVU18C
2018-04-01$412.35$274.13RVU18B
2018-01-01$412.35$274.13RVU18AR1
2017-10-01$457.61$300.50RVU17D
2017-07-01$457.61$300.50RVU17C
2017-04-01$457.61$300.50RVU17B
2017-01-01$457.61$300.50RVU17A
2016-10-01$411.72$274.25RVU16D
2016-07-01$411.72$274.25RVU16C
2016-04-01$411.72$274.25RVU16B
2016-01-01$411.72$274.25RVU16A
2015-10-01$466.48$302.95RVU15D
2015-07-01$466.48$302.95RVU15C
2015-04-01$464.16$301.45RVU15B
2015-01-01$464.16$301.45RVU15A
2014-10-01$408.58$273.80RVU14D
2014-07-01$408.58$273.80RVU14C
2014-04-01$408.58$273.80RVU14B
2014-01-01$408.58$273.80RVU14A
2013-10-01$408.62$267.60RVU13D
2013-07-01$408.62$267.60RVU13C
2013-04-01$408.62$267.60RVU13B
2013-01-01$408.62$267.60RVU13AR

Price 28050 for an earlier date of service

Where the South Carolina rate applies

South Carolina is a Medicare payment area, not a city. Our Census mapping connects it to 475 cities and communities in South Carolina. Some span more than one payment area; confirm with the service ZIP.

  • Abbeville
  • Abney Crossroads
  • Adams Run
  • Aiken
  • Alcolu
  • Allendale
  • Anderson
  • Andrews

Browse all communities in South Carolina

28050 billing questions

How is a foot joint biopsy different from a toe joint biopsy?

This code is for sampling the lining of a foot joint. Use the separate toe-joint biopsy code, 28054, when the sampled joint is in a toe.

Can the surgeon also report a synovectomy?

A diagnostic tissue sample is distinct from therapeutic removal of joint lining. Report a separate synovectomy only when it is independently performed and documented, rather than treating the biopsy itself as a synovectomy.

Does joint exploration include a biopsy?

Exploration codes describe inspection or exploration of a joint, while this code represents obtaining tissue from the joint lining. The operative note should support each service reported.

What should the operative note document?

Document the specific foot joint, the tissue sampled, and the diagnostic reason for obtaining the specimen. The record should make clear that tissue was sampled rather than the lining being removed therapeutically.

How does Medicare handle bilateral reporting and multiple procedures?

Modifier 50 is subject to the bilateral payment rule of 150%. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and the others are reduced to 50%.

Can an assistant or co-surgeon be reported?

Medicare does not pay an assistant at surgery for this code. 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 28050PPRRVU2026_Oct_nonQPP.csv, line 3,104 (RVU26D)
Geographic factors for South CarolinaGPCI2026.csv, line 93 (RVU26D)

Open CMS sourceHow we calculate rates

Did this answer your question about what 28050 pays in South Carolina?

Tell us what you were actually trying to work out. We’ll answer you directly, or build the page that does.

Fee sheets · Coming soon

Put 28050 and the rest of your codes on one sheet

Your codes at your locality, with payer contracts beside Medicare.

Join the waitlist