CPT code 31576: Laryngeal biopsy, flexible endoscopic approach2026 Medicare rate & RVUs

An otolaryngologist uses a flexible scope to inspect the larynx and obtain tissue from a suspicious area for diagnostic evaluation.

CMS RVU26DEffective Oct 1, 2026109 payment localities666 Medicare services in 2024

Medicare pays $268.54 for 31576 nationally in the office and $103.88 in a hospital or facility. Local office rates run $236.36–$358.97.

Medicare rate · 31576

Laryngeal biopsy, flexible endoscopic approach

Office or facility?

Work RVUs
1.84
Total RVUs
8.04
Global days
000

National rate · 2026

$268.54

Office setting, before claim adjustments.

See every locality for 31576 →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.

Your location

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What 31576 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 31576 covers

This service involves passing a flexible endoscope to examine the larynx and taking one or more tissue samples from an abnormal area. Otolaryngologists commonly perform it in an office or facility when a vocal fold or other laryngeal finding needs tissue diagnosis. The scope provides visualization and access for the biopsy; the purpose is sampling, not removing a lesion as treatment.

Report the service when the flexible examination includes an actual tissue biopsy, and document the sampled site, endoscopic findings, and biopsy performed. Same-day preoperative and postoperative care is included in the 0-day global period. When related endoscopies are performed together, endoscopy family pricing applies. A bilateral adjustment is not appropriate. Medicare does not pay for an assistant at surgery, and co-surgeons and team surgery are not permitted for this service.

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 31576 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

$236.36 to $358.97

$236.36$297.67$358.97
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

31576 office and facility rates by payment locality
Payment localityOfficeFacility
Alabama$239.97$95.89
Alaska$308.27$132.90
Arizona$261.14$101.58
Arkansas$236.36$94.91
Atlanta, GA$273.65$106.35
Austin, TX$279.18$104.97
Bakersfield, CA$285.36$104.89
Baltimore area, MD$286.07$109.38
Beaumont, TX$250.07$100.22
Brazoria, TX$265.34$102.15

31576 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.

$236.36

$321.79

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

View every state and territory as a table
31576 office rate range by state
State / territoryOffice rate rangeLocalities
AK$308.271
AL$239.971
AR$236.361
AZ$261.141
CA$284.61–$358.9729
CO$280.081
CT$286.871
DC$308.161
DE$265.591
FL$264.18–$289.963
GA$248.78–$273.652
GU$292.071
HI$292.071
IA$246.441
ID$248.091
IL$256.17–$281.214
IN$249.601
KS$245.191
KY$245.781
LA$245.36–$258.022
MA$278.28–$308.602
MD$270.83–$308.163
ME$249.39–$263.552
MI$252.40–$267.562
MN$268.181
MO$240.94–$259.043
MS$238.701
MT$268.531
NC$252.121
ND$263.381
NE$247.861
NH$275.591
NJ$290.10–$304.752
NM$253.821
NV$267.291
NY$256.04–$317.425
OH$251.351
OK$245.381
OR$265.17–$289.332
PA$251.80–$279.462
PR$270.601
RI$275.321
SC$252.161
SD$262.781
TN$246.471
TX$250.07–$279.188
UT$255.751
VA$262.62–$308.162
VI$270.601
VT$262.271
WA$277.78–$315.062
WI$254.201
WV$246.301
WY$266.291

How the 31576 rate is calculated

Each of 31576’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 · 31576

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.84

1.84 RVUs× 1.000 GPCI

Practice expense5.94

5.94 RVUs× 1.000 GPCI

Malpractice0.26

0.26 RVUs× 1.000 GPCI

Adjusted RVUs

8.0400

Conversion factor

$33.4009

Medicare rate

$268.54

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

Payment rules and modifiers for 31576

The CMS indicators that decide how 31576 is paid alongside other services.

CMS payment indicators · 31576

Laryngeal biopsy, flexible endoscopic approach

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

31576 without 51 · national office

$268.54

Laryngeal biopsy, flexible endoscopic approach

31576-51 · Second procedure: 50%

$134.27

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

31576 compared with similar codes

Compare codes · National

5 codes, side by side

Office or facility?

  • 31576

    Laryngeal biopsy, flexible endoscopic approach1.84 wRVU

    $268.54

  • 31575

    Laryngoscopy, flexible, diagnostic0.92 wRVU

    $127.26−$141.28

  • 31578

    Laryngoscopy, flexible scope, lesion removal2.37 wRVU

    $304.28+$35.74

  • 31535

    Laryngeal biopsy, direct operative approach3.08 wRVU

    Not priced

  • 31579

    Laryngoscopy, with stroboscopy1.83 wRVU

    $195.06−$73.48

How to choose

31575LaryngoscopyFlexible, diagnostic
31575 covers flexible laryngeal examination without tissue sampling. Report 31576 when a biopsy is performed during the flexible examination.
31578LaryngoscopyFlexible scope, lesion removal
31578 is for flexible endoscopic removal of a lesion. Choose 31576 when tissue is sampled for diagnosis rather than the lesion being removed as treatment.
31535Laryngeal biopsyDirect operative approach
31535 describes biopsy using direct laryngoscopy. 31576 is the flexible endoscopic approach.
31579LaryngoscopyWith stroboscopy
31579 involves stroboscopic examination of laryngeal function. 31576 is distinguished by obtaining tissue for biopsy.

31576 billing questions

How does this differ from diagnostic flexible laryngoscopy?

This code includes tissue sampling during the flexible examination. Use diagnostic flexible laryngoscopy when the examination is performed without a biopsy.

When would a laryngoscopy code for lesion removal be more appropriate?

Use the removal service when the lesion is excised or otherwise removed as treatment. This code represents biopsy sampling for diagnosis, not therapeutic lesion removal.

What documentation supports reporting this service?

Document the laryngeal site examined, the abnormal finding, and that tissue was obtained with the flexible scope. The record should distinguish biopsy sampling from inspection alone or lesion removal.

Can modifier 50 be used for biopsies on both sides?

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

How does payment work when related endoscopies are performed together?

CMS endoscopy family pricing applies when related endoscopies are performed together. The code also has a 0-day global period, so same-day preoperative and postoperative care is included.

Can an assistant or co-surgeon be reported?

Medicare does not pay an assistant at surgery for this code. Co-surgeons and team surgery 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 31576PPRRVU2026_Oct_nonQPP.csv, line 3,609 (RVU26D)

Open CMS sourceHow we calculate rates

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