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CPT code 41105: Tongue biopsy, posterior one-third2026 Medicare rate & RVUs in Chicago, IL

Reports tissue sampling from the posterior one-third of the tongue to evaluate a suspicious lesion or other abnormal tissue.

CMS RVU26DEffective Oct 1, 2026One payment locality1.3K Medicare services in 2024

In Chicago, IL, Medicare pays $199.04 for 41105 in the office and $109.75 when it’s performed in a hospital or facility.

$199.04Office (non-facility)
$109.75Hospital or facility
+5.1%vs the national office rate ($189.38)

Check a contract rate as a % of Medicare · 41105 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 41105 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Chicago, IL
  2. What 41105 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 41105 covers

This service is a tissue sample taken from the posterior one-third of the tongue for diagnostic evaluation, such as investigation of a suspicious ulcer, mass, or mucosal change. An otolaryngologist, head-and-neck surgeon, or oral and maxillofacial surgeon may perform it in an office, procedure room, or operating room, depending on access and the patient’s needs. The sample is submitted for pathologic examination; this code describes the biopsy procedure, not the pathology interpretation.

Choose this code for a biopsy from the posterior tongue, rather than the anterior two-thirds or the floor of the mouth. The note should identify the sampled site and the lesion or abnormal tissue prompting the biopsy. It has a 10-day global period, so related postoperative visits during that period are included. When multiple procedures subject to the standard reduction are performed in the same session, the highest-valued is paid in full and the others at 50%. Modifier 50 is inappropriate. Medicare does not pay an assistant at surgery, and co-surgeon and team-surgery billing 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 Chicago, IL compares for 41105

Across 109 of 109 payment localities, the office rate for 41105 runs from $167.12 in Arkansas to $251.18 in San Benito County, CA. Chicago, IL pays $199.04. The RVUs are the same everywhere; the geographic indexes change the dollars.

41105 in Chicago, IL vs other payment areas
  1. Chicago, IL · this page$199.04
  2. East St. Louis, IL · Illinois$185.36−$13.68
  3. Rest of Illinois · Illinois$181.40−$17.64
  4. Suburban Chicago, IL · Illinois$198.52−$0.52
  5. Los Angeles, CA · California$213.79+$14.75
  6. Washington, DC area · District of Columbia$216.74+$17.70
  7. Miami, FL · Florida$205.13+$6.09

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

Every other payment area

41105 in every other Medicare payment locality
Payment localityOfficeFacility
Manhattan, NYNew York$218.21$114.98
AlaskaAlaska$219.04$124.42
AlabamaAlabama$169.62$91.88
ArkansasArkansas$167.12$90.80
ArizonaArizona$184.24$98.15
Bakersfield, CACalifornia$200.63$103.26
Chico, CACalifornia$200.05$102.67
El Centro, CACalifornia$200.08$102.71

41105 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.

$167.12

$225.62

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

View every state and territory as a table
41105 office rate range by state
State / territoryOffice rate rangeLocalities
AK$219.041
AL$169.621
AR$167.121
AZ$184.241
CA$200.05–$251.1829
CO$197.131
CT$202.131
DC$216.741
DE$187.331
FL$186.81–$205.133
GA$176.09–$193.032
GU$205.061
HI$205.061
IA$173.891
ID$175.071
IL$181.40–$199.044
IN$176.101
KS$173.121
KY$173.841
LA$173.58–$182.332
MA$195.94–$216.782
MD$190.93–$216.743
ME$176.06–$185.702
MI$178.51–$189.242
MN$188.591
MO$170.59–$182.923
MS$168.881
MT$189.371
NC$177.931
ND$185.421
NE$174.841
NH$194.081
NJ$204.36–$214.442
NM$179.531
NV$188.401
NY$180.65–$223.675
OH$177.701
OK$173.451
OR$186.86–$203.422
PA$177.95–$197.062
PR$190.771
RI$194.021
SC$178.131
SD$184.951
TN$174.011
TX$176.76–$196.548
UT$180.611
VA$185.13–$216.742
VI$190.771
VT$184.731
WA$195.56–$221.182
WI$179.091
WV$174.591
WY$187.651

See 41105 in every payment locality

How the 41105 rate is calculated

Each of 41105’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 · 41105

RVUs × geographic indexes × conversion factor

Office or facility?

Work1.43

1.43 RVUs× 1.000 GPCI

Practice expense4.04

4.04 RVUs× 1.000 GPCI

Malpractice0.20

0.20 RVUs× 1.000 GPCI

Adjusted RVUs

5.6700

Conversion factor

$33.4009

Medicare rate

$189.38

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

The exact Chicago, IL inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

4,896

Code
41105
Physician work
1.43
Practice expense
4.04
Malpractice
0.20

GPCI2026.csv

48

Locality
Chicago, IL
Physician work
1.007
Practice expense
1.005
Malpractice
2.295
Office calculation for 41105 in Chicago, IL
ComponentRVULocality factorAdjusted
Physician work1.43× 1.0071.4400
Practice expense4.04× 1.0054.0602
Malpractice0.20× 2.2950.4590
Total RVUs5.9592
Conversion factor× 33.4009

Office rate, Chicago, IL$199.04

Office: (1.43 × 1.007 + 4.04 × 1.005 + 0.2 × 2.295) × $33.4009 = $199.04

Facility: (1.43 × 1.007 + 1.38 × 1.005 + 0.2 × 2.295) × $33.4009 = $109.75

Open 41105 in the RVU calculator

Payment rules and modifiers for 41105

41105 has a 10-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 41105

Tongue biopsy, posterior one-third

RuleCMS valueWhat it means
Global period010Minor procedure: the day of the procedure plus 10 days after are 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.
Split (54/55/56)0.10/0.80/0.10Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 41105

Tongue biopsy, posterior one-third

10-day global period ends

Oct 11, 2026

Covers Oct 1, 2026 through Oct 11, 2026 (11 days).

Visit on Oct 31, 2026

After the global period ends: visits and procedures are billed normally.

SurgeryVisit
Sep 28, 2026Oct 14, 2026

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

41105 without 51 · national office

$189.38

Tongue biopsy, posterior one-third

41105-51 · Second procedure: 50%

$94.69

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 41105

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

Codes related to 41105
CodeHow it relatesOffice range, Chicago, IL
Same family
41100Tongue biopsy, anterior two-thirdsBiopsy of the anterior two-thirds of the tongue.$197.27
Used instead
41108Oral biopsy, floor of mouthBiopsy code for a lesion sampled from the floor of the mouth.$177.40
41110Tongue lesion excision, without closureTongue lesion excision when the lesion is removed rather than sampled.$237.08
41112Tongue excision, anterior two-thirds, with closureTongue lesion excision with closure, rather than diagnostic tissue sampling.$360.63
41113Tongue lesion excision, complicated closurePosterior tongue lesion excision with closure, rather than biopsy.$388.66

How 41105 has changed in Chicago, IL

41105 · Office / nonfacility

$199.04

Effective 2026-10-01

The base rate is $8.37 higher than on 2025-10-01, moving from $190.67 to $199.04 (4.4%).

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

    $190.67changed to$199.04

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 1.47 changed to 1.43
    • Practice expense RVU 3.96 changed to 4.04
    • Malpractice RVU 0.18 changed to 0.20
    • Practice expense GPCI 1.023 changed to 1.005
    • Malpractice GPCI 2.018 changed to 2.295

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $198.59changed to$190.67

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 4.01 changed to 3.96
    • Malpractice RVU 0.19 changed to 0.18

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $195.35changed to$198.59

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $202.81changed to$195.35

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 4.00 changed to 4.01
    • Work GPCI 1.009 changed to 1.007
    • Practice expense GPCI 1.033 changed to 1.023
    • Malpractice GPCI 1.945 changed to 2.018

  5. January 1, 2023

    RVU23A

    $206.80changed to$202.81

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 3.96 changed to 4.00
    • Work GPCI 1.011 changed to 1.009
    • Practice expense GPCI 1.044 changed to 1.033
    • Malpractice GPCI 1.871 changed to 1.945

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $204.66changed to$206.80

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 3.89 changed to 3.96
    • Malpractice RVU 0.17 changed to 0.19

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $193.35changed to$204.66

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 3.40 changed to 3.89
    • Malpractice RVU 0.18 changed to 0.17
    • Work GPCI 1.009 changed to 1.011
    • Practice expense GPCI 1.039 changed to 1.044
    • Malpractice GPCI 1.898 changed to 1.871

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $193.08changed to$193.35

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 3.32 changed to 3.40
    • Malpractice RVU 0.23 changed to 0.18
    • Work GPCI 1.008 changed to 1.009
    • Practice expense GPCI 1.034 changed to 1.039
    • Malpractice GPCI 1.925 changed to 1.898

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $189.14changed to$193.08

    • Conversion factor 35.9996 changed to 36.0391
    • Practice expense RVU 3.22 changed to 3.32

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $190.13changed to$189.14

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 3.24 changed to 3.22
    • Work GPCI 1.012 changed to 1.008
    • Practice expense GPCI 1.036 changed to 1.034
    • Malpractice GPCI 1.972 changed to 1.925

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $191.88changed to$190.13

    • Conversion factor 35.8043 changed to 35.8887
    • Practice expense RVU 3.28 changed to 3.24
    • Work GPCI 1.016 changed to 1.012
    • Practice expense GPCI 1.037 changed to 1.036
    • Malpractice GPCI 2.019 changed to 1.972

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $192.20changed to$191.88

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 3.27 changed to 3.28

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $191.25changed to$192.20

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $190.48changed to$191.25

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 3.28 changed to 3.27
    • Malpractice RVU 0.19 changed to 0.23
    • Work GPCI 1.023 changed to 1.016
    • Practice expense GPCI 1.044 changed to 1.037
    • Malpractice GPCI 2.048 changed to 2.019

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $195.09changed to$190.48

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 3.62 changed to 3.28
    • Malpractice RVU 0.20 changed to 0.19
    • Work GPCI 1.030 changed to 1.023
    • Practice expense GPCI 1.051 changed to 1.044
    • Malpractice GPCI 2.077 changed to 2.048

    Held through RVU14B, RVU14C, RVU14D.

  16. October 1, 2013

    RVU13D

    No ratechanged to$195.09

  17. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$199.04$109.75RVU26D
2026-07-01$199.04$109.75RVU26C
2026-04-01$199.04$109.75RVU26B
2026-01-01$199.04$109.75RVU26A
2025-10-01$190.67$115.89RVU25D
2025-07-01$190.67$115.89RVU25C
2025-04-01$190.67$115.89RVU25B
2025-01-01$190.67$115.89RVU25A
2024-10-01$198.59$118.91RVU24D
2024-07-01$198.59$118.91RVU24C
2024-04-01$198.59$118.91RVU24B
2024-03-09$198.59$118.91RVU24AR
2024-01-01$195.35$116.97RVU24A
2023-10-01$202.81$120.19RVU23D
2023-07-01$202.81$120.19RVU23C
2023-04-01$202.81$120.19RVU23B
2023-01-01$202.81$120.19RVU23A
2022-10-01$206.80$120.82RVU22D
2022-07-01$206.80$120.82RVU22C
2022-04-01$206.80$120.82RVU22B
2022-01-01$206.80$120.82RVU22A
2021-10-01$204.66$120.15RVU21D
2021-07-01$204.66$120.15RVU21C
2021-04-01$204.66$120.15RVU21B
2021-01-01$204.66$120.15RVU21A
2020-10-01$193.35$120.60RVU20D
2020-07-01$193.35$120.60RVU20C
2020-04-01$193.35$120.60RVU20B
2020-01-01$193.35$120.60RVU20A
2019-10-01$193.08$124.88RVU19D
2019-07-01$193.08$124.88RVU19C
2019-04-01$193.08$124.88RVU19B
2019-01-01$193.08$124.88RVU19A
2018-10-01$189.14$125.86RVU18D
2018-07-01$189.14$125.86RVU18C
2018-04-01$189.14$125.86RVU18B
2018-01-01$189.14$125.86RVU18AR1
2017-10-01$190.13$127.67RVU17D
2017-07-01$190.13$127.67RVU17C
2017-04-01$190.13$127.67RVU17B
2017-01-01$190.13$127.67RVU17A
2016-10-01$191.88$128.39RVU16D
2016-07-01$191.88$128.39RVU16C
2016-04-01$191.88$128.39RVU16B
2016-01-01$191.88$128.39RVU16A
2015-10-01$192.20$128.86RVU15D
2015-07-01$192.20$128.86RVU15C
2015-04-01$191.25$128.22RVU15B
2015-01-01$191.25$128.22RVU15A
2014-10-01$190.48$127.27RVU14D
2014-07-01$190.48$127.27RVU14C
2014-04-01$190.48$127.27RVU14B
2014-01-01$190.48$127.27RVU14A
2013-10-01$195.09$127.51RVU13D
2013-07-01Rate data unavailableRate data unavailableRVU13C
2013-04-01Rate data unavailableRate data unavailableRVU13B
2013-01-01Rate data unavailableRate data unavailableRVU13AR

Price 41105 for an earlier date of service

Where the Chicago, IL rate applies

Chicago, IL is a Medicare payment area, not a city. Our Census mapping connects it to 137 cities and communities in Illinois. Some span more than one payment area; confirm with the service ZIP.

Browse all communities in Illinois

41105 billing questions

How is 41105 distinguished from 41100?

41105 is for a biopsy of the posterior one-third of the tongue; 41100 is for the anterior two-thirds. The documentation should identify which part of the tongue was sampled.

Can 41105 be used for a floor-of-mouth biopsy?

No. A biopsy of the floor of the mouth is reported with 41108; 41105 is for the posterior tongue.

When would a tongue lesion excision code be more appropriate?

Use a biopsy code when tissue is sampled for diagnosis. When the lesion is removed rather than sampled, consider the applicable tongue lesion excision code, such as 41110.

Is modifier 50 appropriate for a biopsy of both sides of the tongue?

No. CMS identifies bilateral adjustment as inappropriate for this code, so do not append modifier 50.

Are related postoperative visits included?

Yes. Related postoperative visits during the 10-day global period are included in the procedure.

Can an assistant surgeon or co-surgeon be billed?

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 41105PPRRVU2026_Oct_nonQPP.csv, line 4,896 (RVU26D)
Geographic factors for Chicago, ILGPCI2026.csv, line 48 (RVU26D)

Open CMS sourceHow we calculate rates

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