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CPT code 31570: Vocal fold injection, direct, without optical magnification2026 Medicare rate & RVUs in South Carolina

Reports direct laryngoscopy with therapeutic injection into one or both vocal folds, such as botulinum toxin treatment for spasmodic dysphonia.

CMS RVU26DEffective Oct 1, 2026One payment locality830 Medicare services in 2024

In South Carolina, Medicare pays $326.25 for 31570 in the office and $189.53 when it’s performed in a hospital or facility.

$326.25Office (non-facility)
$189.53Hospital or facility
−5.3%vs the national office rate ($344.36)

Check a contract rate as a % of Medicare · 31570 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 31570 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in South Carolina
  2. What 31570 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 31570 covers

An otolaryngologist performs direct laryngoscopy and injects a therapeutic agent into one or both vocal folds. A typical use is botulinum toxin treatment for spasmodic dysphonia. The code describes the direct approach without an operating microscope or telescope, unlike 31571, and is commonly furnished in an operative setting.

Select 31570 when documentation supports direct laryngeal access and therapeutic injection, rather than flexible-scope injection, lesion treatment, or a diagnostic-only examination. Document the indication, target vocal fold or folds, injected agent, approach, and therapeutic purpose. The 0-day global period includes same-day preoperative and postoperative care. When related endoscopies are performed together, endoscopy-family pricing applies. The descriptor covers vocal cord(s), so a bilateral adjustment is inappropriate. Medicare does not pay for an assistant at surgery for this service; 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 South Carolina compares for 31570

Across 109 of 109 payment localities, the office rate for 31570 runs from $306.62 in Arkansas to $436.72 in San Benito County, CA. South Carolina pays $326.25. The RVUs are the same everywhere; the geographic indexes change the dollars.

31570 in South Carolina vs other payment areas
  1. South Carolina · this page$326.25
  2. Los Angeles, CA · California$379.15+$52.90
  3. Washington, DC area · District of Columbia$388.78+$62.53
  4. Miami, FL · Florida$383.15+$56.90
  5. Chicago, IL · Illinois$372.19+$45.94
  6. Manhattan, NY · New York$396.34+$70.09
  7. Alaska · Alaska$411.08+$84.83

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

Every other payment area

31570 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$310.82$181.35
ArkansasArkansas$306.62$179.52
ArizonaArizona$335.32$191.94
Bakersfield, CACalifornia$357.99$195.82
Chico, CACalifornia$356.28$194.11
El Centro, CACalifornia$356.38$194.21
Fresno, CACalifornia$356.28$194.11
Hanford, CACalifornia$356.28$194.11

31570 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.

$306.62

$411.08

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

View every state and territory as a table
31570 office rate range by state
State / territoryOffice rate rangeLocalities
AK$411.081
AL$310.821
AR$306.621
AZ$335.321
CA$356.28–$436.7229
CO$354.201
CT$366.391
DC$388.781
DE$340.581
FL$345.70–$383.153
GA$326.75–$351.952
GU$363.151
HI$363.151
IA$315.391
ID$317.901
IL$338.36–$372.194
IN$319.551
KS$315.341
KY$320.601
LA$320.67–$335.362
MA$352.84–$385.862
MD$346.36–$388.783
ME$320.89–$335.182
MI$329.66–$351.162
MN$336.021
MO$316.42–$334.863
MS$311.511
MT$344.321
NC$323.811
ND$332.461
NE$316.601
NH$350.011
NJ$369.61–$385.442
NM$331.901
NV$341.221
NY$328.47–$407.145
OH$327.231
OK$318.631
OR$337.62–$363.302
PA$326.96–$358.642
PR$346.251
RI$351.141
SC$326.251
SD$331.061
TN$317.001
TX$325.05–$353.868
UT$330.401
VA$335.09–$388.782
VI$346.251
VT$332.481
WA$351.74–$392.092
WI$322.151
WV$326.971
WY$339.151

See 31570 in every payment locality

How the 31570 rate is calculated

Each of 31570’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 · 31570

RVUs × geographic indexes × conversion factor

Office or facility?

Work3.76

3.76 RVUs× 1.000 GPCI

Practice expense5.95

5.95 RVUs× 1.000 GPCI

Malpractice0.60

0.60 RVUs× 1.000 GPCI

Adjusted RVUs

10.3100

Conversion factor

$33.4009

Medicare rate

$344.36

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

3,603

Code
31570
Physician work
3.76
Practice expense
5.95
Malpractice
0.60

GPCI2026.csv

93

Locality
South Carolina
Physician work
1.000
Practice expense
0.924
Malpractice
0.850
Office calculation for 31570 in South Carolina
ComponentRVULocality factorAdjusted
Physician work3.76× 1.0003.7600
Practice expense5.95× 0.9245.4978
Malpractice0.60× 0.8500.5100
Total RVUs9.7678
Conversion factor× 33.4009

Office rate, South Carolina$326.25

Office: (3.76 × 1 + 5.95 × 0.924 + 0.6 × 0.85) × $33.4009 = $326.25

Facility: (3.76 × 1 + 1.52 × 0.924 + 0.6 × 0.85) × $33.4009 = $189.53

Open 31570 in the RVU calculator

Payment rules and modifiers for 31570

The CMS indicators that decide how 31570 is paid alongside other services.

CMS payment indicators · 31570

Vocal fold injection, direct, without optical magnification

RuleCMS valueWhat it means
Global period000Same-day global: pre- and post-op care on the day of the procedure is included.
Multiple procedures3Endoscopy family rules apply.
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

31570 without 51 · national office

$344.36

Vocal fold injection, direct, without optical magnification

31570-51 · Second procedure: 50%

$172.18

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 31570

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

Codes related to 31570
CodeHow it relatesOffice range, South Carolina
Same family
31571Vocal fold injection, microscope or telescopeDirect laryngoscopy injection with an operating microscope or telescope.No office rate
Used instead
31573Laryngoscopy, therapeutic injectionFlexible laryngoscopy with therapeutic injection, including specified unilateral treatment.$270.54
31574Vocal fold injection, flexible scope, unilateralFlexible laryngoscopy with injection for vocal-fold augmentation.$838.41

How 31570 has changed in South Carolina

31570 · Office / nonfacility

$326.25

Effective 2026-10-01

The base rate is $13.98 higher than on 2025-10-01, moving from $312.27 to $326.25 (4.5%).

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

    $312.27changed to$326.25

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 3.86 changed to 3.76
    • Practice expense RVU 5.80 changed to 5.95
    • Malpractice RVU 0.61 changed to 0.60
    • 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

    $323.48changed to$312.27

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 5.87 changed to 5.80

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $318.20changed to$323.48

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $326.23changed to$318.20

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 5.86 changed to 5.87
    • Malpractice RVU 0.59 changed to 0.61
    • Practice expense GPCI 0.908 changed to 0.913
    • Malpractice GPCI 0.756 changed to 0.817

  5. January 1, 2023

    RVU23A

    $327.69changed to$326.23

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 5.75 changed to 5.86
    • Malpractice RVU 0.60 changed to 0.59
    • 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

    $326.46changed to$327.69

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 5.64 changed to 5.75
    • Malpractice RVU 0.58 changed to 0.60

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $324.09changed to$326.46

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 5.26 changed to 5.64
    • Malpractice RVU 0.56 changed to 0.58
    • 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

    $321.12changed to$324.09

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 5.18 changed to 5.26
    • Malpractice RVU 0.59 changed to 0.56
    • 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

    $317.16changed to$321.12

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 5.07 changed to 5.18

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $321.73changed to$317.16

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 5.18 changed to 5.07
    • Malpractice RVU 0.60 changed to 0.59
    • Malpractice GPCI 0.634 changed to 0.553

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $326.63changed to$321.73

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 5.30 changed to 5.18
    • Malpractice GPCI 0.715 changed to 0.634

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $326.68changed to$326.63

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 5.25 changed to 5.30
    • Malpractice RVU 0.62 changed to 0.60

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $325.06changed to$326.68

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $324.49changed to$325.06

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 5.36 changed to 5.25
    • Malpractice RVU 0.51 changed to 0.62
    • 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

    $324.10changed to$324.49

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 5.93 changed to 5.36
    • Malpractice RVU 0.53 changed to 0.51
    • 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: $324.10

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$326.25$189.53RVU26D
2026-07-01$326.25$189.53RVU26C
2026-04-01$326.25$189.53RVU26B
2026-01-01$326.25$189.53RVU26A
2025-10-01$312.27$211.86RVU25D
2025-07-01$312.27$211.86RVU25C
2025-04-01$312.27$211.86RVU25B
2025-01-01$312.27$211.86RVU25A
2024-10-01$323.48$216.80RVU24D
2024-07-01$323.48$216.80RVU24C
2024-04-01$323.48$216.80RVU24B
2024-03-09$323.48$216.80RVU24AR
2024-01-01$318.20$213.26RVU24A
2023-10-01$326.23$218.23RVU23D
2023-07-01$326.23$218.23RVU23C
2023-04-01$326.23$218.23RVU23B
2023-01-01$326.23$218.23RVU23A
2022-10-01$327.69$218.63RVU22D
2022-07-01$327.69$218.63RVU22C
2022-04-01$327.69$218.63RVU22B
2022-01-01$327.69$218.63RVU22A
2021-10-01$326.46$217.44RVU21D
2021-07-01$326.46$217.44RVU21C
2021-04-01$326.46$217.44RVU21B
2021-01-01$326.46$217.44RVU21A
2020-10-01$324.09$220.98RVU20D
2020-07-01$324.09$220.98RVU20C
2020-04-01$324.09$220.98RVU20B
2020-01-01$324.09$220.98RVU20A
2019-10-01$321.12$220.22RVU19D
2019-07-01$321.12$220.22RVU19C
2019-04-01$321.12$220.22RVU19B
2019-01-01$321.12$220.22RVU19A
2018-10-01$317.16$219.65RVU18D
2018-07-01$317.16$219.65RVU18C
2018-04-01$317.16$219.65RVU18B
2018-01-01$317.16$219.65RVU18AR1
2017-10-01$321.73$222.88RVU17D
2017-07-01$321.73$222.88RVU17C
2017-04-01$321.73$222.88RVU17B
2017-01-01$321.73$222.88RVU17A
2016-10-01$326.63$226.06RVU16D
2016-07-01$326.63$226.06RVU16C
2016-04-01$326.63$226.06RVU16B
2016-01-01$326.63$226.06RVU16A
2015-10-01$326.68$226.73RVU15D
2015-07-01$326.68$226.73RVU15C
2015-04-01$325.06$225.60RVU15B
2015-01-01$325.06$225.60RVU15A
2014-10-01$324.49$223.65RVU14D
2014-07-01$324.49$223.65RVU14C
2014-04-01$324.49$223.65RVU14B
2014-01-01$324.49$223.65RVU14A
2013-10-01$324.10$216.79RVU13D
2013-07-01$324.10$216.79RVU13C
2013-04-01$324.10$216.79RVU13B
2013-01-01$324.10$216.79RVU13AR

Price 31570 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

31570 billing questions

How does 31570 differ from 31571?

Both describe direct laryngoscopy with therapeutic vocal-fold injection. Use 31571 when the procedure includes an operating microscope or telescope.

When is 31573 or 31574 a better fit?

Those codes describe flexible laryngoscopy with injection. 31573 covers therapeutic injection, including specified unilateral treatment; 31574 is for injection for vocal-fold augmentation.

Can 31570 be reported for injections into both vocal folds?

The descriptor covers injection into vocal cord(s). Do not apply a bilateral adjustment or modifier 50.

Can diagnostic laryngoscopy be billed separately with 31570?

The laryngoscopy used to perform the injection is part of the service. A separate diagnostic laryngoscopy should not represent that same procedural work.

What documentation supports 31570?

Document the therapeutic indication, direct approach, vocal fold target or targets, injected agent, and purpose of the injection.

How does payment work when related endoscopies are performed together?

CMS endoscopy-family pricing applies when related endoscopies are performed together. The service has a 0-day global period, and assistant-at-surgery, co-surgeon, and team-surgery billing are 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 31570PPRRVU2026_Oct_nonQPP.csv, line 3,603 (RVU26D)
Geographic factors for South CarolinaGPCI2026.csv, line 93 (RVU26D)

Open CMS sourceHow we calculate rates

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