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CMS RVU26D · Effective 2026-10-01

31298 in Wyoming**

Office / nonfacility

$2960.28

Base rate per service

Facility setting

$210.39

Base rate per service

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.

Nasal/sinus endoscopy

About 31298: Frontal and sphenoid sinus dilation

Endoscopic dilation of frontal and sphenoid sinus openings is reported when both drainage pathways are treated during the same operative session.

An otolaryngologist uses a nasal endoscope to access and enlarge the frontal and sphenoid sinus openings, commonly with a balloon catheter passed through the nasal cavity. The procedure may be performed for obstructed sinus drainage, including in patients with chronic rhinosinusitis, when the operative plan is dilation at both sites. It is typically performed in an operating or procedural setting; the record should identify each sinus treated and the dilation performed.

Report 31298 when both frontal and sphenoid openings are dilated during the operative session; single-sinus dilation codes distinguish treatment of only one site. Document the treated anatomy, laterality, and technique. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. Related endoscopies performed together are subject to endoscopy-family pricing. For bilateral work, modifier 50 is paid at 150%. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are not permitted.

CMS billing rules for 31298

Global period
Minor procedure with a 0-day global period: same-day preoperative and postoperative care is included.
Multiple procedures
Endoscopy family pricing applies when related endoscopies are performed together.
Bilateral procedures
Bilateral procedure with modifier 50 is paid at 150%.
Assistant at surgery
Assistant at surgery is paid only with documentation of medical necessity.
Co-surgeons
Co-surgeons not permitted.
Team surgery
Team surgery not permitted.

Where the value comes from

  • Work RVU4.39 · 5%
  • Practice expense (office) RVU83.78 · 94%
  • Malpractice RVU0.62 · 1%

9.3K

Medicare services in 2024 · #1508 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.

31298 compared with similar codes

Office rates for Wyoming**, from the same CMS release.

31296

Sinus dilation

Frontal sinus

$1,599.51

31296 describes dilation of the frontal sinus opening alone. Choose 31298 when the sphenoid opening is also dilated in the session.

31297

Sinus dilation

Sphenoid ostium

$1,561.37

31297 describes dilation of the sphenoid sinus opening alone. Choose 31298 when the frontal opening is also dilated in the session.

31276

Frontal sinus endoscopy

Tissue removal when performed

No office rate

31276 is frontal sinus endoscopic surgery involving tissue removal; 31298 describes dilation of the frontal and sphenoid openings.

31287

Sphenoidotomy

Without tissue removal

No office rate

31287 is endoscopic sphenoid sinus surgery without tissue removal, not dilation of both the sphenoid and frontal openings.

The same code, a different location

How does Wyoming** compare?

31298 across payment areas

Same release and payment basis · bars start at $0

  1. Wyoming** · This locality

    $2960.28

  2. Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty)

    $3476.81

    $516.53 higher than Wyoming**

  3. Dc + Md/Va Suburbs

    $3474.03

    $513.75 higher than Wyoming**

  4. Miami

    $3112.06

    $151.78 higher than Wyoming**

  5. Chicago

    $3007.50

    $47.22 higher than Wyoming**

  6. Manhattan

    $3440.51

    $480.23 higher than Wyoming**

  7. Alaska*

    $3211.57

    $251.29 higher than Wyoming**

Other payment areas listed in Wyoming appear first, followed by selected cross-country examples. The chart compares amounts, not distance.

Across 109 of 109 CMS payment localities with a supported office rate, 31298 ranges from $2561.06 in Arkansas to $4209.05 in San Jose-Sunnyvale-Santa Clara (San Benito Cnty). This is a geographic range, not an average.

The code’s RVUs stay the same in these comparisons. Geographic adjustments to work, practice expense and malpractice change the dollar amount. A city name alone may not identify the payment area for a service address.

Compare all 108 other payment areas

  • Alabama

    Alabama · 31298

    Office

    $2606.89

    Facility

    $200.73

    $353.39 lower than Wyoming** for the office setting.

  • Arkansas

    Arkansas · 31298

    Office

    $2561.06

    Facility

    $198.90

    $399.22 lower than Wyoming** for the office setting.

  • Arizona

    Arizona · 31298

    Office

    $2875.94

    Facility

    $211.29

    $84.34 lower than Wyoming** for the office setting.

  • Bakersfield

    California · 31298

    Office

    $3228.99

    Facility

    $215.11

    $268.71 higher than Wyoming** for the office setting.

  • Chico

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • El Centro

    California · 31298

    Office

    $3227.29

    Facility

    $213.41

    $267.01 higher than Wyoming** for the office setting.

  • Fresno

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Hanford-Corcoran

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Madera

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Merced

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Modesto

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Napa

    California · 31298

    Office

    $3854.58

    Facility

    $230.22

    $894.30 higher than Wyoming** for the office setting.

  • Oxnard-Thousand Oaks-Ventura

    California · 31298

    Office

    $3471.26

    Facility

    $220.88

    $510.98 higher than Wyoming** for the office setting.

  • Redding

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Rest Of California

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Riverside-San Bernardino-Ontario

    California · 31298

    Office

    $3233.90

    Facility

    $220.01

    $273.62 higher than Wyoming** for the office setting.

  • Sacramento-Roseville-Folsom

    California · 31298

    Office

    $3417.46

    Facility

    $219.33

    $457.18 higher than Wyoming** for the office setting.

  • Salinas

    California · 31298

    Office

    $3405.54

    Facility

    $218.41

    $445.26 higher than Wyoming** for the office setting.

  • San Diego-Chula Vista-Carlsbad

    California · 31298

    Office

    $3509.05

    Facility

    $220.18

    $548.77 higher than Wyoming** for the office setting.

  • San Francisco-Oakland-Berkeley (Marin Cnty)

    California · 31298

    Office

    $4115.71

    Facility

    $238.35

    $1155.43 higher than Wyoming** for the office setting.

  • San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)

    California · 31298

    Office

    $4115.00

    Facility

    $237.65

    $1154.72 higher than Wyoming** for the office setting.

  • San Jose-Sunnyvale-Santa Clara (San Benito Cnty)

    California · 31298

    Office

    $4209.05

    Facility

    $243.70

    $1248.77 higher than Wyoming** for the office setting.

  • San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)

    California · 31298

    Office

    $4206.17

    Facility

    $240.82

    $1245.89 higher than Wyoming** for the office setting.

  • San Luis Obispo-Paso Robles

    California · 31298

    Office

    $3347.52

    Facility

    $215.39

    $387.24 higher than Wyoming** for the office setting.

  • Santa Cruz-Watsonville

    California · 31298

    Office

    $3560.78

    Facility

    $219.65

    $600.50 higher than Wyoming** for the office setting.

  • Santa Maria-Santa Barbara

    California · 31298

    Office

    $3424.69

    Facility

    $218.31

    $464.41 higher than Wyoming** for the office setting.

  • Santa Rosa-Petaluma

    California · 31298

    Office

    $3598.47

    Facility

    $221.60

    $638.19 higher than Wyoming** for the office setting.

  • Stockton

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Vallejo

    California · 31298

    Office

    $3853.57

    Facility

    $229.21

    $893.29 higher than Wyoming** for the office setting.

  • Visalia

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Yuba City

    California · 31298

    Office

    $3227.19

    Facility

    $213.30

    $266.91 higher than Wyoming** for the office setting.

  • Colorado

    Colorado · 31298

    Office

    $3141.98

    Facility

    $216.09

    $181.70 higher than Wyoming** for the office setting.

  • Connecticut

    Connecticut · 31298

    Office

    $3188.42

    Facility

    $226.78

    $228.14 higher than Wyoming** for the office setting.

  • Delaware

    Delaware · 31298

    Office

    $2930.73

    Facility

    $213.83

    $29.55 lower than Wyoming** for the office setting.

  • Fort Lauderdale

    Florida · 31298

    Office

    $3018.78

    Facility

    $233.13

    $58.50 higher than Wyoming** for the office setting.

  • Rest Of Florida

    Florida · 31298

    Office

    $2852.96

    Facility

    $224.06

    $107.32 lower than Wyoming** for the office setting.

  • Atlanta

    Georgia · 31298

    Office

    $3015.04

    Facility

    $221.15

    $54.76 higher than Wyoming** for the office setting.

  • Rest Of Georgia

    Georgia · 31298

    Office

    $2667.42

    Facility

    $214.52

    $292.86 lower than Wyoming** for the office setting.

  • Hawaii, Guam

    Hawaii · 31298

    Office

    $3340.32

    Facility

    $213.69

    $380.04 higher than Wyoming** for the office setting.

  • Iowa

    Iowa · 31298

    Office

    $2715.32

    Facility

    $199.17

    $244.96 lower than Wyoming** for the office setting.

  • Idaho

    Idaho · 31298

    Office

    $2730.89

    Facility

    $200.98

    $229.39 lower than Wyoming** for the office setting.

  • East St. Louis

    Illinois · 31298

    Office

    $2762.80

    Facility

    $232.89

    $197.48 lower than Wyoming** for the office setting.

  • Rest Of Illinois

    Illinois · 31298

    Office

    $2733.87

    Facility

    $223.22

    $226.41 lower than Wyoming** for the office setting.

  • Suburban Chicago

    Illinois · 31298

    Office

    $3058.23

    Facility

    $234.09

    $97.95 higher than Wyoming** for the office setting.

  • Indiana

    Indiana · 31298

    Office

    $2750.74

    Facility

    $201.59

    $209.54 lower than Wyoming** for the office setting.

  • Kansas

    Kansas · 31298

    Office

    $2686.76

    Facility

    $200.85

    $273.52 lower than Wyoming** for the office setting.

  • Kentucky

    Kentucky · 31298

    Office

    $2653.29

    Facility

    $208.63

    $306.99 lower than Wyoming** for the office setting.

  • New Orleans

    Louisiana · 31298

    Office

    $2803.38

    Facility

    $215.73

    $156.90 lower than Wyoming** for the office setting.

  • Rest Of Louisiana

    Louisiana · 31298

    Office

    $2642.99

    Facility

    $209.33

    $317.29 lower than Wyoming** for the office setting.

  • Metropolitan Boston

    Massachusetts · 31298

    Office

    $3512.28

    Facility

    $228.90

    $552.00 higher than Wyoming** for the office setting.

  • Rest Of Massachusetts

    Massachusetts · 31298

    Office

    $3112.12

    Facility

    $216.48

    $151.84 higher than Wyoming** for the office setting.

  • Baltimore/Surr. Cntys

    Maryland · 31298

    Office

    $3177.20

    Facility

    $226.56

    $216.92 higher than Wyoming** for the office setting.

  • Rest Of Maryland

    Maryland · 31298

    Office

    $2999.01

    Facility

    $216.12

    $38.73 higher than Wyoming** for the office setting.

  • Rest Of Maine

    Maine · 31298

    Office

    $2733.97

    Facility

    $204.07

    $226.31 lower than Wyoming** for the office setting.

  • Southern Maine

    Maine · 31298

    Office

    $2932.84

    Facility

    $207.69

    $27.44 lower than Wyoming** for the office setting.

  • Detroit

    Michigan · 31298

    Office

    $2881.93

    Facility

    $228.28

    $78.35 lower than Wyoming** for the office setting.

  • Rest Of Michigan

    Michigan · 31298

    Office

    $2724.88

    Facility

    $214.23

    $235.40 lower than Wyoming** for the office setting.

  • Minnesota

    Minnesota · 31298

    Office

    $3032.24

    Facility

    $202.60

    $71.96 higher than Wyoming** for the office setting.

  • Metropolitan Kansas City

    Missouri · 31298

    Office

    $2794.49

    Facility

    $212.34

    $165.79 lower than Wyoming** for the office setting.

  • Metropolitan St. Louis

    Missouri · 31298

    Office

    $2831.39

    Facility

    $213.49

    $128.89 lower than Wyoming** for the office setting.

  • Rest Of Missouri

    Missouri · 31298

    Office

    $2578.96

    Facility

    $208.55

    $381.32 lower than Wyoming** for the office setting.

  • Mississippi

    Mississippi · 31298

    Office

    $2571.29

    Facility

    $203.63

    $388.99 lower than Wyoming** for the office setting.

  • Montana**

    Montana · 31298

    Office

    $2965.62

    Facility

    $215.73

    $5.34 higher than Wyoming** for the office setting.

  • North Carolina

    North Carolina · 31298

    Office

    $2770.70

    Facility

    $205.05

    $189.58 lower than Wyoming** for the office setting.

  • North Dakota**

    North Dakota · 31298

    Office

    $2953.37

    Facility

    $203.47

    $6.91 lower than Wyoming** for the office setting.

  • Nebraska

    Nebraska · 31298

    Office

    $2737.31

    Facility

    $199.16

    $222.97 lower than Wyoming** for the office setting.

  • New Hampshire

    New Hampshire · 31298

    Office

    $3077.81

    Facility

    $215.17

    $117.53 higher than Wyoming** for the office setting.

  • Northern Nj

    New Jersey · 31298

    Office

    $3424.04

    Facility

    $234.16

    $463.76 higher than Wyoming** for the office setting.

  • Rest Of New Jersey

    New Jersey · 31298

    Office

    $3230.99

    Facility

    $228.10

    $270.71 higher than Wyoming** for the office setting.

  • New Mexico

    New Mexico · 31298

    Office

    $2737.57

    Facility

    $215.91

    $222.71 lower than Wyoming** for the office setting.

  • Nevada**

    Nevada · 31298

    Office

    $2965.01

    Facility

    $212.36

    $4.73 higher than Wyoming** for the office setting.

  • Nyc Suburbs/Long Island

    New York · 31298

    Office

    $3521.68

    Facility

    $252.05

    $561.40 higher than Wyoming** for the office setting.

  • Poughkpsie/N Nyc Suburbs

    New York · 31298

    Office

    $3242.45

    Facility

    $231.32

    $282.17 higher than Wyoming** for the office setting.

  • Queens

    New York · 31298

    Office

    $3493.50

    Facility

    $243.12

    $533.22 higher than Wyoming** for the office setting.

  • Rest Of New York

    New York · 31298

    Office

    $2819.60

    Facility

    $207.20

    $140.68 lower than Wyoming** for the office setting.

  • Ohio

    Ohio · 31298

    Office

    $2722.38

    Facility

    $211.72

    $237.90 lower than Wyoming** for the office setting.

  • Oklahoma

    Oklahoma · 31298

    Office

    $2661.63

    Facility

    $205.97

    $298.65 lower than Wyoming** for the office setting.

  • Portland

    Oregon · 31298

    Office

    $3273.32

    Facility

    $218.19

    $313.04 higher than Wyoming** for the office setting.

  • Rest Of Oregon

    Oregon · 31298

    Office

    $2948.32

    Facility

    $209.43

    $11.96 lower than Wyoming** for the office setting.

  • Metropolitan Philadelphia

    Pennsylvania · 31298

    Office

    $3087.03

    Facility

    $224.39

    $126.75 higher than Wyoming** for the office setting.

  • Rest Of Pennsylvania

    Pennsylvania · 31298

    Office

    $2735.06

    Facility

    $210.66

    $225.22 lower than Wyoming** for the office setting.

  • Puerto Rico

    Puerto Rico · 31298

    Office

    $2996.14

    Facility

    $215.99

    $35.86 higher than Wyoming** for the office setting.

  • Rhode Island

    Rhode Island · 31298

    Office

    $3058.56

    Facility

    $217.92

    $98.28 higher than Wyoming** for the office setting.

  • South Carolina

    South Carolina · 31298

    Office

    $2749.89

    Facility

    $208.98

    $210.39 lower than Wyoming** for the office setting.

  • South Dakota**

    South Dakota · 31298

    Office

    $2951.92

    Facility

    $202.02

    $8.36 lower than Wyoming** for the office setting.

  • Tennessee

    Tennessee · 31298

    Office

    $2701.43

    Facility

    $201.77

    $258.85 lower than Wyoming** for the office setting.

  • Austin

    Texas · 31298

    Office

    $3125.90

    Facility

    $216.51

    $165.62 higher than Wyoming** for the office setting.

  • Beaumont

    Texas · 31298

    Office

    $2712.35

    Facility

    $209.94

    $247.93 lower than Wyoming** for the office setting.

  • Brazoria

    Texas · 31298

    Office

    $2937.10

    Facility

    $211.95

    $23.18 lower than Wyoming** for the office setting.

  • Dallas

    Texas · 31298

    Office

    $2952.85

    Facility

    $213.96

    $7.43 lower than Wyoming** for the office setting.

  • Fort Worth

    Texas · 31298

    Office

    $2925.14

    Facility

    $213.74

    $35.14 lower than Wyoming** for the office setting.

  • Galveston

    Texas · 31298

    Office

    $2943.69

    Facility

    $213.04

    $16.59 lower than Wyoming** for the office setting.

  • Houston

    Texas · 31298

    Office

    $2955.04

    Facility

    $224.39

    $5.24 lower than Wyoming** for the office setting.

  • Rest Of Texas

    Texas · 31298

    Office

    $2820.94

    Facility

    $211.29

    $139.34 lower than Wyoming** for the office setting.

  • Utah

    Utah · 31298

    Office

    $2795.65

    Facility

    $210.75

    $164.63 lower than Wyoming** for the office setting.

  • Virginia

    Virginia · 31298

    Office

    $2912.01

    Facility

    $208.86

    $48.27 lower than Wyoming** for the office setting.

  • Virgin Islands

    United States Virgin Islands · 31298

    Office

    $2996.14

    Facility

    $215.99

    $35.86 higher than Wyoming** for the office setting.

  • Vermont

    Vermont · 31298

    Office

    $2927.45

    Facility

    $205.06

    $32.83 lower than Wyoming** for the office setting.

  • Rest Of Washington

    Washington · 31298

    Office

    $3110.93

    Facility

    $215.29

    $150.65 higher than Wyoming** for the office setting.

  • Seattle (King Cnty)

    Washington · 31298

    Office

    $3604.43

    Facility

    $230.31

    $644.15 higher than Wyoming** for the office setting.

  • Wisconsin

    Wisconsin · 31298

    Office

    $2833.81

    Facility

    $199.41

    $126.47 lower than Wyoming** for the office setting.

  • West Virginia

    West Virginia · 31298

    Office

    $2608.01

    Facility

    $218.35

    $352.27 lower than Wyoming** for the office setting.

See how rates vary across the country

31298 · Office / nonfacility · Non-QP. Choose a state to explore its payment localities. A range means the amount varies within that state.

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.

$2,561.06

$3,718.12

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

View all state and territory rates as a table
State / territoryRate rangeLocalities
AK$3,211.571
AL$2,606.891
AR$2,561.061
AZ$2,875.941
CA$3,227.19–$4,209.0529
CO$3,141.981
CT$3,188.421
DC$3,474.031
DE$2,930.731
FL$2,852.96–$3,112.063
GA$2,667.42–$3,015.042
GU$3,340.321
HI$3,340.321
IA$2,715.321
ID$2,730.891
IL$2,733.87–$3,058.234
IN$2,750.741
KS$2,686.761
KY$2,653.291
LA$2,642.99–$2,803.382
MA$3,112.12–$3,512.282
MD$2,999.01–$3,474.033
ME$2,733.97–$2,932.842
MI$2,724.88–$2,881.932
MN$3,032.241
MO$2,578.96–$2,831.393
MS$2,571.291
MT$2,965.621
NC$2,770.701
ND$2,953.371
NE$2,737.311
NH$3,077.811
NJ$3,230.99–$3,424.042
NM$2,737.571
NV$2,965.011
NY$2,819.60–$3,521.685
OH$2,722.381
OK$2,661.631
OR$2,948.32–$3,273.322
PA$2,735.06–$3,087.032
PR$2,996.141
RI$3,058.561
SC$2,749.891
SD$2,951.921
TN$2,701.431
TX$2,712.35–$3,125.908
UT$2,795.651
VA$2,912.01–$3,474.032
VI$2,996.141
VT$2,927.451
WA$3,110.93–$3,604.432
WI$2,833.811
WV$2,608.011
WY$2,960.281

Explore 31298 on the national rate map →

Where does this rate apply?

Wyoming** is a Medicare payment area. Our Census mapping connects it to 205 cities and communities in Wyoming, including the examples shown here.

Some communities span more than one payment area. Follow a city link to compare all of its mapped areas, or check the service-location ZIP above for an address-level starting point.

Browse all communities in Wyoming →

Why are the office and facility amounts different?

For 31298 in Wyoming**, the physician’s office rate is $2960.28 and the facility-setting rate is $210.39: a difference of $2749.89.

The calculation uses a different practice-expense RVU for each setting. Both amounts here are physician fee-schedule amounts. The facility figure does not include a hospital’s separate charges, so this comparison does not tell you the total cost of receiving care in each setting.

See the inputs behind this difference →

Use this rate

What is a percentage of Medicare worth?

Turn a percentage into dollars for 31298 in Wyoming**. This uses the base rate on this page, so the locality and release stay consistent.

Reference amount per service

$3256.31

$2960.28 × 110% = $3256.31

A contract may specify another Medicare year or additional adjustments. This is percentage arithmetic on the displayed base rate, not a claim adjudication.

Working with a whole code list?

Compare an offer across your annual code mix, including an older Medicare schedule or flat per-code rates.

Compare your contract offer →

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 31298 in Wyoming**.

PPRRVU2026_Oct_nonQPP.csv

3,553

Code
31298
Physician work
4.39
Practice expense
83.78
Malpractice
0.62

GPCI2026.csv

112

Locality
Wyoming**
Physician work
1.000
Practice expense
1.000
Malpractice
0.740
Office / nonfacility calculation for 31298 in Wyoming**
ComponentRVULocality factorAdjusted
Physician work4.39× 1.0004.3900
Practice expense83.78× 1.00083.7800
Malpractice0.62× 0.7400.4588
Total RVUs88.6288
Conversion factor× 33.4009

Office / nonfacility rate, Wyoming**$2960.28

Open 31298 in the RVU calculator →

Explore RVUs, geographic factors and the full formula

Office / nonfacility

Office / nonfacility calculation inputs
ComponentRVULocal GPCI
Work4.391
Practice expense83.781
Malpractice0.620.74

(4.39 × 1 + 83.78 × 1 + 0.62 × 0.74) × $33.4009 = $2960.28

Facility

Facility calculation inputs
ComponentRVULocal GPCI
Work4.391
Practice expense1.451
Malpractice0.620.74

(4.39 × 1 + 1.45 × 1 + 0.62 × 0.74) × $33.4009 = $210.39

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.

How this rate has changed

31298 · Office / nonfacility

$2960.28

Effective 2026-10-01

The base rate is $108.52 higher than on 2025-10-01, moving from $2851.76 to $2960.28 (3.8%).

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

    $2851.76changed to$2960.28

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 4.50 changed to 4.39
    • Practice expense RVU 83.19 changed to 83.78
    • Malpractice RVU 0.64 changed to 0.62
    • Malpractice GPCI 0.739 changed to 0.740

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    Earliest loaded release: $2851.76

    Held through RVU25B, RVU25C, RVU25D.

Explore release dates and calculate this code in an earlier period →

Each row uses the accepted CMS release effective on that date and the same contractor and locality identifiers. Missing rates stay visible. Historical boundaries may differ; verify the service address for an older claim.

Inspect every release and its CMS source
Effective fromOffice / nonfacilityFacilityCMS release
2026-10-01$2960.28$210.39RVU26D
2026-07-01$2960.28$210.39RVU26C
2026-04-01$2960.28$210.39RVU26B
2026-01-01$2960.28$210.39RVU26A
2025-10-01$2851.76$241.72RVU25D
2025-07-01$2851.76$241.72RVU25C
2025-04-01$2851.76$241.72RVU25B
2025-01-01$2851.76$241.72RVU25A

31298 billing questions

When should I choose 31298 over 31296 or 31297?

Use 31298 when the frontal and sphenoid sinus openings are both dilated. Codes 31296 and 31297 describe dilation at the frontal and sphenoid sites, respectively, when only one of those sites is treated.

Does 31298 include maxillary sinus dilation?

No. This code identifies dilation of the frontal and sphenoid openings. The maxillary sinus dilation code is 31295.

How should I report bilateral dilation?

CMS identifies this as a bilateral procedure; modifier 50 is paid at 150%. The operative documentation should support treatment on both sides.

How does payment work when related endoscopies are performed together?

CMS applies endoscopy-family pricing when related endoscopies are performed together. The same-day preoperative and postoperative care is included in the 0-day global period.

What documentation supports reporting 31298?

Document endoscopic dilation of both the frontal and sphenoid sinus openings, along with the treated side or sides and the technique performed. Assistant-at-surgery payment requires documentation of medical necessity.

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.

RVUs for 31298PPRRVU2026_Oct_nonQPP.csv, line 3,553 (RVU26D)
Geographic factors for Wyoming**GPCI2026.csv, line 112 (RVU26D)
Open CMS sourceHow this rate is calculatedBuild a fee sheet