FeeBase
Log inGet started
Menu
On this page

CMS RVU26D · Effective 2026-10-01

31231 in Redding

Office / nonfacility

$206.14

Base rate per service

Facility setting

$54.22

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.

Otolaryngology procedure

About 31231: Diagnostic nasal endoscopy, unilateral or bilateral

Report diagnostic nasal endoscopy for endoscopic inspection of the nasal passages, meatuses, and sphenoethmoid recess without sinus entry or surgical treatment.

An otolaryngologist, and sometimes an allergist or advanced practice provider, uses a rigid or flexible scope to inspect the nasal cavity in an office or outpatient facility. Topical decongestant or anesthetic may be used. The examination can show the septum, turbinates, middle meatus, sphenoethmoid recess, and nasopharynx when visualized. Common indications include chronic rhinosinusitis, nasal obstruction, recurrent epistaxis, suspected polyps or masses, and surveillance after sinus surgery when no debridement is performed.

Report one unit whether one or both sides are examined; the code is already priced as bilateral, so modifier 50 adds no payment. Document the indication, sides examined, structures viewed, and findings. Its 0-day global period includes same-day pre- and post-procedure care. A separately identifiable E/M service beyond that care may be reported with modifier 25 on the E/M code. For multiple procedures in the same session, the highest-valued is paid in full and other procedures subject to the standard reduction are paid at 50%. Medicare does not pay an assistant at surgery or permit co-surgeons or team surgery for this code.

CMS billing rules for 31231

Global period
Minor procedure with a 0-day global period: same-day preoperative and postoperative care is 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
The code is already priced as bilateral; modifier 50 does not increase payment.
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 · 18%
  • Practice expense (office) RVU4.56 · 79%
  • Malpractice RVU0.16 · 3%

739.4K

Medicare services in 2024 · #175 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.

31231 compared with similar codes

Office rates for Redding, from the same CMS release.

31233

Sinus endoscopy

Maxillary sinus

$287.48

31231 inspects the nasal cavity and sinus openings without entering a sinus. 31233 includes direct examination inside the maxillary sinus.

31237

Nasal endoscopy

Biopsy, polypectomy, or debridement

$278.50

Use 31237 when the nasal or sinus endoscopy includes biopsy, polyp removal, or debridement. Do not separately report 31231 for diagnostic inspection of the same site during that surgical endoscopy.

92511

Nasopharyngoscopy

Endoscopic nasopharynx exam

$124.72

92511 focuses on the nasopharynx. 31231 evaluates nasal cavity structures such as the meatuses, turbinates, and sphenoethmoid recess, even if the nasopharynx is also visualized.

31575

Laryngoscopy

Flexible, diagnostic

$134.61

31575 examines the larynx with a flexible scope. Passing that scope through the nose does not alone support 31231; a separate medically necessary nasal cavity examination must be documented.

The same code, a different location

How does Redding compare?

In Bakersfield, the office rate for 31231 is $206.60—$0.46 higher than the $206.14 rate in Redding. Both use the same code, release and participation basis.

31231 across payment areas

Same release and payment basis · bars start at $0

  1. Redding · This locality

    $206.14

  2. Bakersfield

    $206.60

    $0.46 higher than Redding

  3. Chico

    $206.14

    The same base rate than Redding

  4. El Centro

    $206.17

    $0.03 higher than Redding

  5. Fresno

    $206.14

    The same base rate than Redding

  6. Hanford-Corcoran

    $206.14

    The same base rate than Redding

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

    $220.93

    $14.79 higher than Redding

Other payment areas listed in California 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, 31231 ranges from $169.32 in Arkansas to $262.16 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

  • Madera

    California · 31231

    Office

    $206.14

    Facility

    $54.22

    The same base rate than Redding for the office setting.

  • Merced

    California · 31231

    Office

    $206.14

    Facility

    $54.22

    The same base rate than Redding for the office setting.

  • Modesto

    California · 31231

    Office

    $206.14

    Facility

    $54.22

    The same base rate than Redding for the office setting.

  • Napa

    California · 31231

    Office

    $241.45

    Facility

    $58.75

    $35.31 higher than Redding for the office setting.

  • Oxnard-Thousand Oaks-Ventura

    California · 31231

    Office

    $220.10

    Facility

    $56.26

    $13.96 higher than Redding for the office setting.

  • Rest Of California

    California · 31231

    Office

    $206.14

    Facility

    $54.22

    The same base rate than Redding for the office setting.

  • Riverside-San Bernardino-Ontario

    California · 31231

    Office

    $207.87

    Facility

    $55.95

    $1.73 higher than Redding for the office setting.

  • Sacramento-Roseville-Folsom

    California · 31231

    Office

    $217.02

    Facility

    $55.82

    $10.88 higher than Redding for the office setting.

  • Salinas

    California · 31231

    Office

    $216.24

    Facility

    $55.58

    $10.10 higher than Redding for the office setting.

  • San Diego-Chula Vista-Carlsbad

    California · 31231

    Office

    $221.87

    Facility

    $56.09

    $15.73 higher than Redding for the office setting.

  • San Francisco-Oakland-Berkeley (Marin Cnty)

    California · 31231

    Office

    $256.34

    Facility

    $60.90

    $50.20 higher than Redding for the office setting.

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

    California · 31231

    Office

    $256.16

    Facility

    $60.71

    $50.02 higher than Redding for the office setting.

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

    California · 31231

    Office

    $262.16

    Facility

    $62.28

    $56.02 higher than Redding for the office setting.

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

    California · 31231

    Office

    $261.42

    Facility

    $61.54

    $55.28 higher than Redding for the office setting.

  • San Luis Obispo-Paso Robles

    California · 31231

    Office

    $212.69

    Facility

    $54.81

    $6.55 higher than Redding for the office setting.

  • Santa Cruz-Watsonville

    California · 31231

    Office

    $224.41

    Facility

    $55.99

    $18.27 higher than Redding for the office setting.

  • Santa Maria-Santa Barbara

    California · 31231

    Office

    $217.20

    Facility

    $55.57

    $11.06 higher than Redding for the office setting.

  • Santa Rosa-Petaluma

    California · 31231

    Office

    $226.71

    Facility

    $56.49

    $20.57 higher than Redding for the office setting.

  • Stockton

    California · 31231

    Office

    $206.14

    Facility

    $54.22

    The same base rate than Redding for the office setting.

  • Vallejo

    California · 31231

    Office

    $241.19

    Facility

    $58.49

    $35.05 higher than Redding for the office setting.

  • Visalia

    California · 31231

    Office

    $206.14

    Facility

    $54.22

    The same base rate than Redding for the office setting.

  • Yuba City

    California · 31231

    Office

    $206.14

    Facility

    $54.22

    The same base rate than Redding for the office setting.

  • Dc + Md/Va Suburbs

    District of Columbia · 31231

    Office

    $223.04

    Facility

    $59.75

    $16.90 higher than Redding for the office setting.

  • Miami

    Florida · 31231

    Office

    $207.81

    Facility

    $63.51

    $1.67 higher than Redding for the office setting.

  • Chicago

    Illinois · 31231

    Office

    $201.32

    Facility

    $62.02

    $4.82 lower than Redding for the office setting.

  • Manhattan

    New York · 31231

    Office

    $223.48

    Facility

    $62.41

    $17.34 higher than Redding for the office setting.

  • Alaska*

    Alaska · 31231

    Office

    $218.76

    Facility

    $71.14

    $12.62 higher than Redding for the office setting.

  • Alabama

    Alabama · 31231

    Office

    $172.03

    Facility

    $50.75

    $34.11 lower than Redding for the office setting.

  • Arkansas

    Arkansas · 31231

    Office

    $169.32

    Facility

    $50.25

    $36.82 lower than Redding for the office setting.

  • Arizona

    Arizona · 31231

    Office

    $187.90

    Facility

    $53.58

    $18.24 lower than Redding for the office setting.

  • Colorado

    Colorado · 31231

    Office

    $202.40

    Facility

    $54.91

    $3.74 lower than Redding for the office setting.

  • Connecticut

    Connecticut · 31231

    Office

    $206.96

    Facility

    $57.67

    $0.82 higher than Redding for the office setting.

  • Delaware

    Delaware · 31231

    Office

    $191.20

    Facility

    $54.25

    $14.94 lower than Redding for the office setting.

  • Fort Lauderdale

    Florida · 31231

    Office

    $199.69

    Facility

    $59.27

    $6.45 lower than Redding for the office setting.

  • Rest Of Florida

    Florida · 31231

    Office

    $189.38

    Facility

    $56.86

    $16.76 lower than Redding for the office setting.

  • Atlanta

    Georgia · 31231

    Office

    $197.01

    Facility

    $56.18

    $9.13 lower than Redding for the office setting.

  • Rest Of Georgia

    Georgia · 31231

    Office

    $177.97

    Facility

    $54.32

    $28.17 lower than Redding for the office setting.

  • Hawaii, Guam

    Hawaii · 31231

    Office

    $212.01

    Facility

    $54.40

    $5.87 higher than Redding for the office setting.

  • Iowa

    Iowa · 31231

    Office

    $177.22

    Facility

    $50.39

    $28.92 lower than Redding for the office setting.

  • Idaho

    Idaho · 31231

    Office

    $178.39

    Facility

    $50.87

    $27.75 lower than Redding for the office setting.

  • East St. Louis

    Illinois · 31231

    Office

    $186.63

    Facility

    $59.10

    $19.51 lower than Redding for the office setting.

  • Rest Of Illinois

    Illinois · 31231

    Office

    $183.15

    Facility

    $56.59

    $22.99 lower than Redding for the office setting.

  • Suburban Chicago

    Illinois · 31231

    Office

    $201.88

    Facility

    $59.52

    $4.26 lower than Redding for the office setting.

  • Indiana

    Indiana · 31231

    Office

    $179.53

    Facility

    $51.03

    $26.61 lower than Redding for the office setting.

  • Kansas

    Kansas · 31231

    Office

    $176.12

    Facility

    $50.81

    $30.02 lower than Redding for the office setting.

  • Kentucky

    Kentucky · 31231

    Office

    $176.03

    Facility

    $52.80

    $30.11 lower than Redding for the office setting.

  • New Orleans

    Louisiana · 31231

    Office

    $185.13

    Facility

    $54.70

    $21.01 lower than Redding for the office setting.

  • Rest Of Louisiana

    Louisiana · 31231

    Office

    $175.65

    Facility

    $52.98

    $30.49 lower than Redding for the office setting.

  • Metropolitan Boston

    Massachusetts · 31231

    Office

    $223.82

    Facility

    $58.31

    $17.68 higher than Redding for the office setting.

  • Rest Of Massachusetts

    Massachusetts · 31231

    Office

    $200.95

    Facility

    $54.99

    $5.19 lower than Redding for the office setting.

  • Baltimore/Surr. Cntys

    Maryland · 31231

    Office

    $206.35

    Facility

    $57.62

    $0.21 higher than Redding for the office setting.

  • Rest Of Maryland

    Maryland · 31231

    Office

    $195.14

    Facility

    $54.86

    $11.00 lower than Redding for the office setting.

  • Rest Of Maine

    Maine · 31231

    Office

    $179.19

    Facility

    $51.66

    $26.95 lower than Redding for the office setting.

  • Southern Maine

    Maine · 31231

    Office

    $190.05

    Facility

    $52.68

    $16.09 lower than Redding for the office setting.

  • Detroit

    Michigan · 31231

    Office

    $191.73

    Facility

    $57.96

    $14.41 lower than Redding for the office setting.

  • Rest Of Michigan

    Michigan · 31231

    Office

    $180.83

    Facility

    $54.28

    $25.31 lower than Redding for the office setting.

  • Minnesota

    Minnesota · 31231

    Office

    $194.05

    Facility

    $51.41

    $12.09 lower than Redding for the office setting.

  • Metropolitan Kansas City

    Missouri · 31231

    Office

    $183.98

    Facility

    $53.82

    $22.16 lower than Redding for the office setting.

  • Metropolitan St. Louis

    Missouri · 31231

    Office

    $186.09

    Facility

    $54.13

    $20.05 lower than Redding for the office setting.

  • Rest Of Missouri

    Missouri · 31231

    Office

    $172.23

    Facility

    $52.75

    $33.91 lower than Redding for the office setting.

  • Mississippi

    Mississippi · 31231

    Office

    $170.83

    Facility

    $51.48

    $35.31 lower than Redding for the office setting.

  • Montana**

    Montana · 31231

    Office

    $193.38

    Facility

    $54.77

    $12.76 lower than Redding for the office setting.

  • North Carolina

    North Carolina · 31231

    Office

    $181.26

    Facility

    $51.93

    $24.88 lower than Redding for the office setting.

  • North Dakota**

    North Dakota · 31231

    Office

    $190.22

    Facility

    $51.60

    $15.92 lower than Redding for the office setting.

  • Nebraska

    Nebraska · 31231

    Office

    $178.34

    Facility

    $50.40

    $27.80 lower than Redding for the office setting.

  • New Hampshire

    New Hampshire · 31231

    Office

    $198.97

    Facility

    $54.67

    $7.17 lower than Redding for the office setting.

  • Northern Nj

    New Jersey · 31231

    Office

    $220.38

    Facility

    $59.58

    $14.24 higher than Redding for the office setting.

  • Rest Of New Jersey

    New Jersey · 31231

    Office

    $209.35

    Facility

    $57.99

    $3.21 higher than Redding for the office setting.

  • New Mexico

    New Mexico · 31231

    Office

    $181.82

    Facility

    $54.72

    $24.32 lower than Redding for the office setting.

  • Nevada**

    Nevada · 31231

    Office

    $192.65

    Facility

    $53.90

    $13.49 lower than Redding for the office setting.

  • Nyc Suburbs/Long Island

    New York · 31231

    Office

    $229.04

    Facility

    $64.23

    $22.90 higher than Redding for the office setting.

  • Poughkpsie/N Nyc Suburbs

    New York · 31231

    Office

    $210.59

    Facility

    $58.81

    $4.45 higher than Redding for the office setting.

  • Queens

    New York · 31231

    Office

    $225.76

    Facility

    $61.92

    $19.62 higher than Redding for the office setting.

  • Rest Of New York

    New York · 31231

    Office

    $184.19

    Facility

    $52.51

    $21.95 lower than Redding for the office setting.

  • Ohio

    Ohio · 31231

    Office

    $180.18

    Facility

    $53.63

    $25.96 lower than Redding for the office setting.

  • Oklahoma

    Oklahoma · 31231

    Office

    $175.90

    Facility

    $52.12

    $30.24 lower than Redding for the office setting.

  • Portland

    Oregon · 31231

    Office

    $209.50

    Facility

    $55.50

    $3.36 higher than Redding for the office setting.

  • Rest Of Oregon

    Oregon · 31231

    Office

    $191.19

    Facility

    $53.14

    $14.95 lower than Redding for the office setting.

  • Metropolitan Philadelphia

    Pennsylvania · 31231

    Office

    $201.31

    Facility

    $57.01

    $4.83 lower than Redding for the office setting.

  • Rest Of Pennsylvania

    Pennsylvania · 31231

    Office

    $180.61

    Facility

    $53.36

    $25.53 lower than Redding for the office setting.

  • Puerto Rico

    Puerto Rico · 31231

    Office

    $194.99

    Facility

    $54.85

    $11.15 lower than Redding for the office setting.

  • Rhode Island

    Rhode Island · 31231

    Office

    $198.52

    Facility

    $55.33

    $7.62 lower than Redding for the office setting.

  • South Carolina

    South Carolina · 31231

    Office

    $181.01

    Facility

    $52.94

    $25.13 lower than Redding for the office setting.

  • South Dakota**

    South Dakota · 31231

    Office

    $189.84

    Facility

    $51.23

    $16.30 lower than Redding for the office setting.

  • Tennessee

    Tennessee · 31231

    Office

    $177.06

    Facility

    $51.06

    $29.08 lower than Redding for the office setting.

  • Austin

    Texas · 31231

    Office

    $201.69

    Facility

    $55.03

    $4.45 lower than Redding for the office setting.

  • Beaumont

    Texas · 31231

    Office

    $179.30

    Facility

    $53.17

    $26.84 lower than Redding for the office setting.

  • Brazoria

    Texas · 31231

    Office

    $191.13

    Facility

    $53.76

    $15.01 lower than Redding for the office setting.

  • Dallas

    Texas · 31231

    Office

    $192.34

    Facility

    $54.29

    $13.80 lower than Redding for the office setting.

  • Fort Worth

    Texas · 31231

    Office

    $190.89

    Facility

    $54.22

    $15.25 lower than Redding for the office setting.

  • Galveston

    Texas · 31231

    Office

    $191.69

    Facility

    $54.05

    $14.45 lower than Redding for the office setting.

  • Houston

    Texas · 31231

    Office

    $194.62

    Facility

    $56.98

    $11.52 lower than Redding for the office setting.

  • Rest Of Texas

    Texas · 31231

    Office

    $185.11

    Facility

    $53.56

    $21.03 lower than Redding for the office setting.

  • Utah

    Utah · 31231

    Office

    $183.71

    Facility

    $53.41

    $22.43 lower than Redding for the office setting.

  • Virginia

    Virginia · 31231

    Office

    $189.23

    Facility

    $52.97

    $16.91 lower than Redding for the office setting.

  • Virgin Islands

    United States Virgin Islands · 31231

    Office

    $194.99

    Facility

    $54.85

    $11.15 lower than Redding for the office setting.

  • Vermont

    Vermont · 31231

    Office

    $189.23

    Facility

    $52.00

    $16.91 lower than Redding for the office setting.

  • Rest Of Washington

    Washington · 31231

    Office

    $200.65

    Facility

    $54.69

    $5.49 lower than Redding for the office setting.

  • Seattle (King Cnty)

    Washington · 31231

    Office

    $228.77

    Facility

    $58.70

    $22.63 higher than Redding for the office setting.

  • Wisconsin

    Wisconsin · 31231

    Office

    $183.30

    Facility

    $50.50

    $22.84 lower than Redding for the office setting.

  • West Virginia

    West Virginia · 31231

    Office

    $175.74

    Facility

    $55.29

    $30.40 lower than Redding for the office setting.

  • Wyoming**

    Wyoming · 31231

    Office

    $192.00

    Facility

    $53.39

    $14.14 lower than Redding for the office setting.

See how rates vary across the country

31231 · 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.

$169.32

$234.15

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

View all state and territory rates as a table
State / territoryRate rangeLocalities
AK$218.761
AL$172.031
AR$169.321
AZ$187.901
CA$206.14–$262.1629
CO$202.401
CT$206.961
DC$223.041
DE$191.201
FL$189.38–$207.813
GA$177.97–$197.012
GU$212.011
HI$212.011
IA$177.221
ID$178.391
IL$183.15–$201.884
IN$179.531
KS$176.121
KY$176.031
LA$175.65–$185.132
MA$200.95–$223.822
MD$195.14–$223.043
ME$179.19–$190.052
MI$180.83–$191.732
MN$194.051
MO$172.23–$186.093
MS$170.831
MT$193.381
NC$181.261
ND$190.221
NE$178.341
NH$198.971
NJ$209.35–$220.382
NM$181.821
NV$192.651
NY$184.19–$229.045
OH$180.181
OK$175.901
OR$191.19–$209.502
PA$180.61–$201.312
PR$194.991
RI$198.521
SC$181.011
SD$189.841
TN$177.061
TX$179.30–$201.698
UT$183.711
VA$189.23–$223.042
VI$194.991
VT$189.231
WA$200.65–$228.772
WI$183.301
WV$175.741
WY$192.001

Explore 31231 on the national rate map →

Where does this rate apply?

Redding is a Medicare payment area. Our Census mapping connects it to 32 cities and communities in California, 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 California →

Why are the office and facility amounts different?

For 31231 in Redding, the physician’s office rate is $206.14 and the facility-setting rate is $54.22: a difference of $151.92.

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 31231 in Redding. This uses the base rate on this page, so the locality and release stay consistent.

Reference amount per service

$226.75

$206.14 × 110% = $226.75

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 31231 in Redding.

PPRRVU2026_Oct_nonQPP.csv

3,524

Code
31231
Physician work
1.07
Practice expense
4.56
Malpractice
0.16

GPCI2026.csv

19

Locality
Redding
Physician work
1.017
Practice expense
1.096
Malpractice
0.536
Office / nonfacility calculation for 31231 in Redding
ComponentRVULocality factorAdjusted
Physician work1.07× 1.0171.0882
Practice expense4.56× 1.0964.9978
Malpractice0.16× 0.5360.0858
Total RVUs6.1717
Conversion factor× 33.4009

Office / nonfacility rate, Redding$206.14

Values as parsed from CMS release RVU26D, effective 2026-10-01. The amount is rounded to the nearest cent only at the end.

Open 31231 in the RVU calculator →

Explore RVUs, geographic factors and the full formula

Office / nonfacility

Office / nonfacility calculation inputs
ComponentRVULocal GPCI
Work1.071.017
Practice expense4.561.096
Malpractice0.160.536

(1.07 × 1.017 + 4.56 × 1.096 + 0.16 × 0.536) × $33.4009 = $206.14

Facility

Facility calculation inputs
ComponentRVULocal GPCI
Work1.071.017
Practice expense0.411.096
Malpractice0.160.536

(1.07 × 1.017 + 0.41 × 1.096 + 0.16 × 0.536) × $33.4009 = $54.22

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

31231 · Office / nonfacility

$206.14

Effective 2026-10-01

The base rate is $10.54 higher than on 2025-10-01, moving from $195.60 to $206.14 (5.4%).

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

    $195.60changed to$206.14

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 1.10 changed to 1.07
    • Practice expense RVU 4.43 changed to 4.56
    • Work GPCI 1.014 changed to 1.017
    • Practice expense GPCI 1.093 changed to 1.096
    • Malpractice GPCI 0.560 changed to 0.536

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    Earliest loaded release: $195.60

    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$206.14$54.22RVU26D
2026-07-01$206.14$54.22RVU26C
2026-04-01$206.14$54.22RVU26B
2026-01-01$206.14$54.22RVU26A
2025-10-01$195.60$62.67RVU25D
2025-07-01$195.60$62.67RVU25C
2025-04-01$195.60$62.67RVU25B
2025-01-01$195.60$62.67RVU25A

31231 billing questions

Should modifier 50 or RT/LT be added when both sides of the nose are scoped?

No. Report one unit for a bilateral examination without modifier 50 or RT/LT; the code is already priced as bilateral.

Can this code be billed with a surgical sinus endoscopy on the same side?

Do not separately report the diagnostic inspection of the same site during a surgical nasal or sinus endoscopy. Report the applicable surgical code when biopsy, polyp removal, or ethmoidectomy is performed.

When should 31233 or 31235 be reported instead?

Use 31233 for diagnostic maxillary sinusoscopy and 31235 for diagnostic sphenoid sinusoscopy. Inspection of the nasal cavity and sinus openings without entering either sinus remains 31231.

Can an office visit be billed on the same day as the endoscopy?

Yes, if the E/M service is significant and separately identifiable from the routine assessment and same-day care included with the endoscopy. Append modifier 25 to the E/M code.

Does passing a flexible laryngoscope through the nose support a separate nasal endoscopy?

No. Transnasal passage to examine the larynx does not by itself establish a separate diagnostic nasal examination. Report 31231 only when a medically necessary nasal cavity examination is separately performed and documented.

What documentation supports the procedure?

Record the indication, sides examined, structures viewed, and endoscopic findings. Document the scope type and any anesthetic or decongestant used; a note stating only “nasal exam” does not establish the endoscopic examination.

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 31231PPRRVU2026_Oct_nonQPP.csv, line 3,524 (RVU26D)
Geographic factors for ReddingGPCI2026.csv, line 19 (RVU26D)
Open CMS sourceHow this rate is calculatedBuild a fee sheet