Billing code 42104: Palatal excisionMedicare rate & RVUs

Report this service when a clinician excises a lesion of the palate or uvula without closing the resulting site.

CMS RVU26DEffective Oct 1, 2026109 payment localities1.1K Medicare services in 2024

Medicare pays $218.44 for 42104 nationally in the office and $122.58 in a hospital or facility. Local office rates run $192.88–$290.04.

Medicare rate · 42104

Palatal excision

Swap in your local Medicare rate.

Work RVUs
1.65
Total RVUs
6.54
Global days
010

National rate · 2026

$218.44

Office setting, before claim adjustments.

See every locality for 42104 → · 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.

On this page 10 sections
  1. Medicare rate
  2. What 42104 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 42104 covers

A surgeon removes a lesion from the roof of the mouth or uvula without closing the excision site. The service may be performed by an otolaryngologist or oral and maxillofacial surgeon in an office, ambulatory surgery center, or hospital. It represents removal of the lesion, rather than sampling tissue solely to establish a diagnosis or destroying the lesion in place.

Select this code when the operative report supports excision without closure; document the lesion’s location and the work performed. A 10-day global period includes related postoperative visits during that period. 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% multiple-procedure reduction. Modifier 50 is inappropriate for this code. 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.

Where 42104 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

$192.88 to $290.04

$192.88$241.46$290.04
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

42104 office and facility rates by payment locality
Payment localityOfficeFacility
Alabama$195.75$111.88
Alaska*$252.84$150.75
Arizona$212.55$119.66
Arkansas$192.88$110.54
Atlanta$222.58$125.19
Austin$226.76$125.34
Bakersfield$231.59$126.53
Baltimore/Surr. Cntys$232.45$129.59
Beaumont$203.88$116.65
Brazoria$215.86$120.86

42104 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.

$192.88

$260.49

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

View every state and territory as a table
42104 office rate range by state
State / territoryOffice rate rangeLocalities
AK$252.841
AL$195.751
AR$192.881
AZ$212.551
CA$230.94–$290.0429
CO$227.481
CT$233.101
DC$250.011
DE$216.101
FL$215.27–$236.073
GA$203.01–$222.582
GU$236.721
HI$236.721
IA$200.751
ID$202.091
IL$209.01–$229.124
IN$203.281
KS$199.821
KY$200.501
LA$200.20–$210.242
MA$226.10–$250.152
MD$220.26–$250.013
ME$203.19–$214.332
MI$205.82–$218.022
MN$217.791
MO$196.73–$210.973
MS$194.841
MT$218.431
NC$205.341
ND$214.081
NE$201.861
NH$223.921
NJ$235.71–$247.372
NM$206.971
NV$217.371
NY$208.46–$257.755
OH$204.931
OK$200.111
OR$215.64–$234.762
PA$205.25–$227.252
PR$220.051
RI$223.841
SC$205.491
SD$213.561
TN$200.851
TX$203.88–$226.768
UT$208.331
VA$213.63–$250.012
VI$220.051
VT$213.251
WA$225.67–$255.262
WI$206.811
WV$201.181
WY$216.531

How the 42104 rate is calculated

Each of 42104’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 · 42104

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 1.65Practice expense 4.67Malpractice 0.22

6.5400 adjusted RVUs×$33.4009 conversion factor=$218.44

All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.

Payment rules and modifiers for 42104

42104 has a 10-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 42104

Palatal excision

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 · 42104

Palatal excision

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

42104 without 51 · national office

$218.44

Palatal excision

42104-51 · Second procedure: 50%

$109.22

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

42104 compared with similar codes

Compare codes

42104 vs 42100 vs 42106 vs 42107 vs 42160: national Medicare rates

Swap in your local Medicare rate.

  • 42104
    Palatal excision · 1.65 wRVU
    $218.44
  • 42100
    Palate biopsy · 1.33 wRVU
    $149.97−$68.47
  • 42106
    Palate excision · 2.1 wRVU
    $261.53+$43.09
  • 42107
    Palatal lesion excision · 4.45 wRVU
    $470.62+$252.18
  • 42160
    Palate lesion treatment · 1.8 wRVU
    $232.47+$14.03

How to choose

42100Palate biopsy
42100 is for diagnostic biopsy. 42104 is for excision of the lesion without closure.
42106Palate excision
42106 includes simple repair after excision; 42104 is for excision without closure.
42107Palatal lesion excision
42107 includes extensive repair after excision; 42104 describes excision without closure.
42160Palate lesion treatment
42160 treats a lesion by destruction. 42104 removes the lesion by excision.

42104 billing questions

How is this different from 42100?

42100 is for biopsy of the palate or uvula. Use 42104 when the clinician excises the lesion rather than taking tissue only for diagnostic sampling.

When should 42106 or 42107 be considered instead?

These are same-family codes for lesion excision with repair. Choose according to whether the operative documentation supports simple or extensive repair; 42104 describes excision without closure.

Are related postoperative visits separately reported?

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

Can modifier 50 be used for lesions on both sides?

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

How are other procedures in the same session paid?

The highest-valued procedure is paid in full, and other procedures in the session are subject to the standard multiple-procedure reduction.

Can an assistant or co-surgeon be billed?

Medicare does not pay an assistant at surgery for this service. 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 42104PPRRVU2026_Oct_nonQPP.csv, line 4,994 (RVU26D)

Open CMS sourceHow we calculate rates

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