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CPT code 20200: Muscle biopsy, superficial, open approach2026 Medicare rate & RVUs in New Mexico

Reports an open biopsy of an accessible superficial skeletal muscle when tissue is needed to investigate suspected muscle disease.

CMS RVU26DEffective Oct 1, 2026One payment locality505 Medicare services in 2024

In New Mexico, Medicare pays $229.20 for 20200 in the office and $90.14 when it’s performed in a hospital or facility.

$229.20Office (non-facility)
$90.14Hospital or facility
−5.2%vs the national office rate ($241.82)

Check a contract rate as a % of Medicare · 20200 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 20200 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in New Mexico
  2. What 20200 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 20200 covers

A physician obtains a small sample of accessible skeletal muscle through an open incision for diagnostic examination. Neurologists and surgeons may perform this procedure when evaluation of conditions such as inflammatory myopathy, muscular dystrophy, or metabolic muscle disease requires tissue. The specimen may be sent for histologic or other laboratory studies. This code describes a superficial muscle biopsy, not a needle sample or an open biopsy of a deeper muscle.

Select the code based on the muscle’s depth and the approach documented in the operative report. Documentation should identify the sampled muscle and site, the open approach, and the diagnostic reason for obtaining tissue. The 0-day global period includes same-day preoperative and postoperative care. If 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. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery for this code, and 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 New Mexico compares for 20200

Across 109 of 109 payment localities, the office rate for 20200 runs from $210.16 in Arkansas to $321.76 in San Benito County, CA. New Mexico pays $229.20. The RVUs are the same everywhere; the geographic indexes change the dollars.

20200 in New Mexico vs other payment areas
  1. New Mexico · this page$229.20
  2. Los Angeles, CA · California$272.93+$43.73
  3. Washington, DC area · District of Columbia$278.18+$48.98
  4. Miami, FL · Florida$268.18+$38.98
  5. Chicago, IL · Illinois$259.07+$29.87
  6. Manhattan, NY · New York$281.59+$52.39
  7. Alaska · Alaska$271.82+$42.62

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

Every other payment area

20200 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$213.70$81.02
ArkansasArkansas$210.16$79.90
ArizonaArizona$234.40$87.46
Bakersfield, CACalifornia$255.37$89.17
Chico, CACalifornia$254.37$88.17
El Centro, CACalifornia$254.43$88.23
Fresno, CACalifornia$254.37$88.17
Hanford, CACalifornia$254.37$88.17

20200 rates by state

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

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

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.

$210.16

$288.07

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

View every state and territory as a table
20200 office rate range by state
State / territoryOffice rate rangeLocalities
AK$271.821
AL$213.701
AR$210.161
AZ$234.401
CA$254.37–$321.7629
CO$251.341
CT$259.381
DC$278.181
DE$238.631
FL$240.03–$268.183
GA$224.54–$247.362
GU$261.561
HI$261.561
IA$218.901
ID$220.751
IL$232.94–$259.074
IN$222.181
KS$218.221
KY$220.571
LA$220.37–$232.762
MA$249.72–$277.722
MD$243.47–$278.183
ME$222.59–$235.622
MI$227.58–$243.932
MN$238.401
MO$216.38–$233.113
MS$213.291
MT$241.801
NC$225.161
ND$234.481
NE$220.121
NH$247.741
NJ$261.67–$274.782
NM$229.201
NV$239.941
NY$229.05–$289.855
OH$226.081
OK$219.591
OR$237.42–$259.622
PA$226.22–$252.522
PR$243.641
RI$247.401
SC$226.131
SD$233.621
TN$219.541
TX$224.56–$251.078
UT$229.641
VA$235.09–$278.182
VI$243.641
VT$233.901
WA$249.13–$283.252
WI$225.631
WV$223.301
WY$238.611

See 20200 in every payment locality

How the 20200 rate is calculated

Each of 20200’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 · 20200

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.42

1.42 RVUs× 1.000 GPCI

Practice expense5.45

5.45 RVUs× 1.000 GPCI

Malpractice0.37

0.37 RVUs× 1.000 GPCI

Adjusted RVUs

7.2400

Conversion factor

$33.4009

Medicare rate

$241.82

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

The exact New Mexico inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

1,727

Code
20200
Physician work
1.42
Practice expense
5.45
Malpractice
0.37

GPCI2026.csv

77

Locality
New Mexico
Physician work
1.000
Practice expense
0.917
Malpractice
1.201
Office calculation for 20200 in New Mexico
ComponentRVULocality factorAdjusted
Physician work1.42× 1.0001.4200
Practice expense5.45× 0.9174.9977
Malpractice0.37× 1.2010.4444
Total RVUs6.8620
Conversion factor× 33.4009

Office rate, New Mexico$229.20

Office: (1.42 × 1 + 5.45 × 0.917 + 0.37 × 1.201) × $33.4009 = $229.20

Facility: (1.42 × 1 + 0.91 × 0.917 + 0.37 × 1.201) × $33.4009 = $90.14

Open 20200 in the RVU calculator

Payment rules and modifiers for 20200

The CMS indicators that decide how 20200 is paid alongside other services.

CMS payment indicators · 20200

Muscle biopsy, superficial, open approach

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)0The 150% bilateral adjustment doesn’t apply.
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 51 · payment effect

With and without the modifier

20200 without 51 · national office

$241.82

Muscle biopsy, superficial, open approach

20200-51 · Second procedure: 50%

$120.91

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

Codes related to 20200

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to 20200
CodeHow it relatesOffice range, New Mexico
Same family
20205Muscle biopsy, open deep-muscle approachOpen muscle biopsy when the sampled muscle is deep rather than superficial.$323.09
Used instead
20206Muscle biopsy, percutaneous needle approachPercutaneous needle approach for obtaining a muscle biopsy specimen.$196.08
Often billed with
88305Tissue pathology exam, level IV specimenMay be reported by the laboratory for pathologic examination of the muscle specimen.$66.53

How 20200 has changed in New Mexico

20200 · Office / nonfacility

$229.20

Effective 2026-10-01

The base rate is $33.05 higher than on 2025-10-01, moving from $196.15 to $229.20 (16.8%).

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

    $196.15changed to$229.20

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 1.46 changed to 1.42
    • Practice expense RVU 4.58 changed to 5.45
    • Malpractice RVU 0.38 changed to 0.37
    • Practice expense GPCI 0.908 changed to 0.917
    • Malpractice GPCI 1.172 changed to 1.201

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $204.19changed to$196.15

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 4.67 changed to 4.58
    • Malpractice RVU 0.37 changed to 0.38

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $200.85changed to$204.19

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $209.02changed to$200.85

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 4.74 changed to 4.67
    • Practice expense GPCI 0.902 changed to 0.908
    • Malpractice GPCI 1.169 changed to 1.172

  5. January 1, 2023

    RVU23A

    $214.41changed to$209.02

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 4.83 changed to 4.74
    • Malpractice RVU 0.35 changed to 0.37
    • Practice expense GPCI 0.896 changed to 0.902
    • Malpractice GPCI 1.166 changed to 1.169

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $217.66changed to$214.41

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 4.89 changed to 4.83
    • Malpractice RVU 0.34 changed to 0.35

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $207.53changed to$217.66

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 4.26 changed to 4.89
    • Malpractice RVU 0.35 changed to 0.34
    • Practice expense GPCI 0.908 changed to 0.896
    • Malpractice GPCI 1.207 changed to 1.166

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $205.88changed to$207.53

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 4.13 changed to 4.26
    • Malpractice RVU 0.36 changed to 0.35
    • Practice expense GPCI 0.921 changed to 0.908
    • Malpractice GPCI 1.247 changed to 1.207

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $203.66changed to$205.88

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 4.07 changed to 4.13

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $202.77changed to$203.66

    • Conversion factor 35.8887 changed to 35.9996
    • Malpractice RVU 0.37 changed to 0.36
    • Practice expense GPCI 0.920 changed to 0.921
    • Malpractice GPCI 1.204 changed to 1.247

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $201.57changed to$202.77

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense GPCI 0.919 changed to 0.920
    • Malpractice GPCI 1.161 changed to 1.204

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $202.63changed to$201.57

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 4.08 changed to 4.07

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $201.62changed to$202.63

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $197.53changed to$201.62

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 4.04 changed to 4.08
    • Malpractice RVU 0.32 changed to 0.37
    • Practice expense GPCI 0.918 changed to 0.919
    • Malpractice GPCI 1.079 changed to 1.161

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $201.11changed to$197.53

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 4.50 changed to 4.04
    • Malpractice RVU 0.33 changed to 0.32
    • Practice expense GPCI 0.916 changed to 0.918
    • Malpractice GPCI 0.997 changed to 1.079

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $201.11

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$229.20$90.14RVU26D
2026-07-01$229.20$90.14RVU26C
2026-04-01$229.20$90.14RVU26B
2026-01-01$229.20$90.14RVU26A
2025-10-01$196.15$92.76RVU25D
2025-07-01$196.15$92.76RVU25C
2025-04-01$196.15$92.76RVU25B
2025-01-01$196.15$92.76RVU25A
2024-10-01$204.19$94.17RVU24D
2024-07-01$204.19$94.17RVU24C
2024-04-01$204.19$94.17RVU24B
2024-03-09$204.19$94.17RVU24AR
2024-01-01$200.85$92.63RVU24A
2023-10-01$209.02$94.70RVU23D
2023-07-01$209.02$94.70RVU23C
2023-04-01$209.02$94.70RVU23B
2023-01-01$209.02$94.70RVU23A
2022-10-01$214.41$95.03RVU22D
2022-07-01$214.41$95.03RVU22C
2022-04-01$214.41$95.03RVU22B
2022-01-01$214.41$95.03RVU22A
2021-10-01$217.66$94.79RVU21D
2021-07-01$217.66$94.79RVU21C
2021-04-01$217.66$94.79RVU21B
2021-01-01$217.66$94.79RVU21A
2020-10-01$207.53$98.08RVU20D
2020-07-01$207.53$98.08RVU20C
2020-04-01$207.53$98.08RVU20B
2020-01-01$207.53$98.08RVU20A
2019-10-01$205.88$99.00RVU19D
2019-07-01$205.88$99.00RVU19C
2019-04-01$205.88$99.00RVU19B
2019-01-01$205.88$99.00RVU19A
2018-10-01$203.66$99.22RVU18D
2018-07-01$203.66$99.22RVU18C
2018-04-01$203.66$99.22RVU18B
2018-01-01$203.66$99.22RVU18AR1
2017-10-01$202.77$99.09RVU17D
2017-07-01$202.77$99.09RVU17C
2017-04-01$202.77$99.09RVU17B
2017-01-01$202.77$99.09RVU17A
2016-10-01$201.57$98.26RVU16D
2016-07-01$201.57$98.26RVU16C
2016-04-01$201.57$98.26RVU16B
2016-01-01$201.57$98.26RVU16A
2015-10-01$202.63$98.61RVU15D
2015-07-01$202.63$98.61RVU15C
2015-04-01$201.62$98.12RVU15B
2015-01-01$201.62$98.12RVU15A
2014-10-01$197.53$95.58RVU14D
2014-07-01$197.53$95.58RVU14C
2014-04-01$197.53$95.58RVU14B
2014-01-01$197.53$95.58RVU14A
2013-10-01$201.11$92.66RVU13D
2013-07-01$201.11$92.66RVU13C
2013-04-01$201.11$92.66RVU13B
2013-01-01$201.11$92.66RVU13AR

Price 20200 for an earlier date of service

Where the New Mexico rate applies

New Mexico is a Medicare payment area, not a city. Our Census mapping connects it to 528 cities and communities in New Mexico. Some span more than one payment area; confirm with the service ZIP.

  • Abeytas
  • Abiquiu
  • Acomita Lake
  • Adelino
  • Agua Fria
  • Alamillo
  • Alamo
  • Alamogordo

Browse all communities in New Mexico

20200 billing questions

How does this differ from 20205?

Use 20200 for an open biopsy of superficial muscle. Code 20205 describes an open biopsy of deep muscle.

When is 20206 more appropriate?

Code 20206 describes a percutaneous needle muscle biopsy. Use 20200 when the documented method is an open biopsy of superficial muscle.

Can modifier 50 be used for biopsies on both sides?

No. The CMS bilateral adjustment does not apply, and modifier 50 is inappropriate for this code.

Is same-day postoperative care separately included?

The code has a 0-day global period, which includes same-day preoperative and postoperative care.

Can an assistant or co-surgeon report this procedure?

Medicare does not pay an assistant-at-surgery claim for 20200. Co-surgeons and team surgery are not permitted.

What documentation supports reporting 20200?

The operative report should identify the muscle and site, establish that the biopsy was open and superficial, and state why tissue was obtained.

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 20200PPRRVU2026_Oct_nonQPP.csv, line 1,727 (RVU26D)
Geographic factors for New MexicoGPCI2026.csv, line 77 (RVU26D)

Open CMS sourceHow we calculate rates

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