$172.69
41100 is for biopsy of the tongue. Choose 41108 when the biopsy site is the floor of the mouth.
On this page
CMS RVU26D · Effective 2026-10-01
41108 Oral biopsy Medicare reimbursement rates in Iowa
Report this service when a clinician biopsies a lesion or abnormal tissue arising from the floor of the mouth for diagnostic evaluation. Compare 41108 office and facility rates across CMS payment localities in Iowa.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 41108 in Iowa?
Iowa has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
$156.00
1 of 1 localities have a supported rate.
Payment area: Iowa
One mapped payment locality.
Facility setting
$77.46
1 of 1 localities have a supported rate.
Payment area: Iowa
One mapped payment locality.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Oral surgery
About 41108: Floor of mouth tissue biopsy
Report this service when a clinician biopsies a lesion or abnormal tissue arising from the floor of the mouth for diagnostic evaluation.
A clinician removes a tissue sample from the floor of the mouth for diagnostic examination, often when an oral lesion or unexplained tissue change needs evaluation. Oral and maxillofacial surgeons, otolaryngologists, and other clinicians qualified to perform oral procedures may do the biopsy in an office or facility. The specimen is generally submitted for pathologic examination; the biopsy code describes the tissue-sampling procedure, not the pathology interpretation.
Select this code for a biopsy at the floor of the mouth, rather than a biopsy of the tongue or an excision of a lesion. The operative note should identify the sampled site and document that tissue was obtained for diagnosis. CMS assigns a 10-day global period, so related postoperative visits during that period are included. 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. Do not use modifier 50 for this anatomy. CMS does not pay an assistant at surgery, and co-surgeons and team surgery are not permitted.
CMS billing rules for 41108
- Global period
- Minor procedure with a 10-day global period: related postoperative visits for 10 days are included.
- Multiple procedures
- Standard multiple procedure reduction: the highest-valued procedure is paid in full and others at 50% when performed in the same session.
- Bilateral procedures
- Bilateral adjustment does not apply; the descriptor or anatomy makes modifier 50 inappropriate.
- Assistant at surgery
- Statutory restriction: assistant at surgery is not paid.
- Co-surgeons
- Co-surgeons not permitted.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU1.07 · 21%
- Practice expense (office) RVU3.87 · 76%
- Malpractice RVU0.15 · 3%
966
Medicare services in 2024 · #2999 by national volume
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.
41108 compared with similar codes
Office rates for Iowa, from the same CMS release.
$173.89
41105 also describes a tongue biopsy, not a floor-of-mouth biopsy. Base code selection on the documented anatomic site.
$307.60
41116 describes excision of a mouth lesion. Use 41108 when tissue is sampled for diagnosis rather than the lesion being excised.
$154.20
40808 is for biopsy of the vestibule of the mouth. It is not the code for tissue sampled from the floor of the mouth.
Compare 41108 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
1 of 1 payment localities
Iowa →
Office / nonfacility
$156.00
Facility
$77.46
Need rates for a whole code list?
Fee-sheet and API access are in early access. Tell us which codes and locations your team needs.
How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 41108 in Iowa.
PPRRVU2026_Oct_nonQPP.csv
4,897
- Code
- 41108
- Physician work
- 1.07
- Practice expense
- 3.87
- Malpractice
- 0.15
GPCI2026.csv
53
- Locality
- Iowa
- Physician work
- 1.000
- Practice expense
- 0.915
- Malpractice
- 0.397
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 1.07 | × 1.000 | 1.0700 |
| Practice expense | 3.87 | × 0.915 | 3.5411 |
| Malpractice | 0.15 | × 0.397 | 0.0595 |
| Total RVUs | 4.6706 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Iowa$156.00
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 1.07 | 1 |
| Practice expense | 3.87 | 0.915 |
| Malpractice | 0.15 | 0.397 |
(1.07 × 1 + 3.87 × 0.915 + 0.15 × 0.397) × $33.4009 = $156.00
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 1.07 | 1 |
| Practice expense | 1.3 | 0.915 |
| Malpractice | 0.15 | 0.397 |
(1.07 × 1 + 1.3 × 0.915 + 0.15 × 0.397) × $33.4009 = $77.46
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
41108 billing questions
How is 41108 distinguished from a tongue biopsy?
Use 41108 when the sampled tissue is from the floor of the mouth. A biopsy of tongue tissue is coded according to the tongue site instead.
Can the pathology examination be reported separately?
The biopsy reports the clinician's tissue-sampling procedure. The pathologist's examination of the submitted specimen is a separate service when performed and reportable.
Is modifier 50 appropriate for bilateral floor-of-mouth biopsies?
No. CMS identifies bilateral adjustment as inappropriate for this code's descriptor and anatomy; do not append modifier 50.
What happens when another procedure is performed in the same session?
Under the standard multiple procedure reduction, the highest-valued procedure is paid in full and the other procedures are paid at 50% when performed in the same session.
Are assistant surgeons or co-surgeons payable for 41108?
CMS does not pay an assistant at surgery for this service. Co-surgeons and team surgery are not permitted.
Are related postoperative visits included?
Yes. The code has a 10-day global period, which includes related postoperative visits during those 10 days.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
4,89441019,,Place needles h&n for rt,A,,8.62,2.85,NA,2.85,,0.68,12.15,12.15,0,000,0.00,0.00,0.00,2,0,0,1,1,9,,33.4009,09,0,99,0.00,0.00,0.00
4,89541100,,Biopsy of tongue,A,,1.38,4.06,,1.35,,0.19,5.63,2.92,0,010,0.10,0.80,0.10,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,89641105,,Biopsy of tongue,A,,1.43,4.04,,1.38,,0.20,5.67,3.01,0,010,0.10,0.80,0.10,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,89741108,,Biopsy of floor of mouth,A,,1.07,3.87,,1.30,,0.15,5.09,2.52,0,010,0.10,0.80,0.10,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,8984110F,,Int mam art used for cabg,M,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
4,89941110,,Excision of tongue lesion,A,,1.52,5.06,,1.83,,0.21,6.79,3.56,0,010,0.10,0.80,0.10,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,90041112,,Excision of tongue lesion,A,,2.76,7.11,,3.62,,0.38,10.25,6.76,0,090,0.09,0.81,0.10,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5006102,IL,15,SUBURBAN CHICAGO,1.007,1.027,1.772
5106102,IL,99,REST OF ILLINOIS,1.000,0.913,1.563
5208102,IN,00,INDIANA,1.000,0.927,0.486
5305102,IA,00,IOWA,1.000,0.915,0.397
5405202,KS,00,KANSAS,1.000,0.904,0.504
5515102,KY,00,KENTUCKY,1.000,0.889,0.915
5607202,LA,01,NEW ORLEANS,1.000,0.941,1.136