No office rate
31070 is a frontal sinus exploration procedure. Report 31084 only when the documented operation meets its removal-procedure definition.
On this page
CMS RVU26D · Effective 2026-10-01
31084 in Chico
Office / nonfacility
Not available in this setting
Base rate per service
Facility setting
$1108.87
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.
Sinus surgery
About 31084: Frontal sinus removal procedure
Reports a frontal sinus operation involving removal, selected when the operative documentation supports this specific procedure rather than exploration alone.
Code 31084 represents a surgical procedure involving removal in the frontal sinus. Otolaryngologists typically perform this type of operation in an operating room for significant frontal sinus disease or a lesion requiring surgical treatment. The operative report should identify the frontal sinus as the treated site and describe the work performed; do not infer this code from a diagnosis or from sinus access alone.
Select this code by matching the documented procedure and approach to its full CPT definition, especially when distinguishing it from other frontal sinus surgery codes. The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care. 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. For bilateral reporting with modifier 50, CMS payment is 150%. Assistant-at-surgery payment may be made; co-surgeons require supporting documentation, and team surgery is not permitted.
CMS billing rules for 31084
- Global period
- Major surgery with a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care 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 procedure with modifier 50 is paid at 150%.
- Assistant at surgery
- Assistant at surgery may be paid.
- Co-surgeons
- Co-surgeons paid only with supporting documentation.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU14.58 · 45%
- Practice expense (office) RVU15.72 · 48%
- Malpractice RVU2.13 · 7%
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.
31084 compared with similar codes
Office rates for Chico, from the same CMS release.
31075
No office rateFrontal sinus exploration
31075 also describes frontal sinus exploration. The operative work and approach, rather than the diagnosis alone, determine whether 31084 is appropriate.
No office rate
Both are frontal sinus removal procedures, but they have distinct CPT definitions. Match the code to the operative technique documented.
The same code, a different location
How does Chico compare?
31084 across payment areas
Same release and payment basis · bars start at $0
Chico · This locality
Unavailable
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Other payment areas listed in California appear first, followed by selected cross-country examples. The chart compares amounts, not distance.
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
Merced
California · 31084
Office
Unavailable
Facility
$1108.87
No comparable office rate is available.
Modesto
California · 31084
Office
Unavailable
Facility
$1108.87
No comparable office rate is available.
Napa
California · 31084
Office
Unavailable
Facility
$1245.84
No comparable office rate is available.
Oxnard-Thousand Oaks-Ventura
California · 31084
Office
Unavailable
Facility
$1165.57
No comparable office rate is available.
Redding
California · 31084
Office
Unavailable
Facility
$1108.87
No comparable office rate is available.
Rest Of California
California · 31084
Office
Unavailable
Facility
$1108.87
No comparable office rate is available.
Riverside-San Bernardino-Ontario
California · 31084
Office
Unavailable
Facility
$1131.90
No comparable office rate is available.
Sacramento-Roseville-Folsom
California · 31084
Office
Unavailable
Facility
$1153.30
No comparable office rate is available.
Salinas
California · 31084
Office
Unavailable
Facility
$1148.76
No comparable office rate is available.
San Diego-Chula Vista-Carlsbad
California · 31084
Office
Unavailable
Facility
$1168.13
No comparable office rate is available.
San Francisco-Oakland-Berkeley (Marin Cnty)
California · 31084
Office
Unavailable
Facility
$1306.24
No comparable office rate is available.
San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)
California · 31084
Office
Unavailable
Facility
$1303.82
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
California · 31084
Office
Unavailable
Facility
$1335.83
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)
California · 31084
Office
Unavailable
Facility
$1325.94
No comparable office rate is available.
San Luis Obispo-Paso Robles
California · 31084
Office
Unavailable
Facility
$1131.44
No comparable office rate is available.
Santa Cruz-Watsonville
California · 31084
Office
Unavailable
Facility
$1173.30
No comparable office rate is available.
Santa Maria-Santa Barbara
California · 31084
Office
Unavailable
Facility
$1150.98
No comparable office rate is available.
Santa Rosa-Petaluma
California · 31084
Office
Unavailable
Facility
$1184.50
No comparable office rate is available.
Stockton
California · 31084
Office
Unavailable
Facility
$1108.87
No comparable office rate is available.
Vallejo
California · 31084
Office
Unavailable
Facility
$1242.35
No comparable office rate is available.
Visalia
California · 31084
Office
Unavailable
Facility
$1108.87
No comparable office rate is available.
Yuba City
California · 31084
Office
Unavailable
Facility
$1108.87
No comparable office rate is available.
Dc + Md/Va Suburbs
District of Columbia · 31084
Office
Unavailable
Facility
$1210.99
No comparable office rate is available.
Miami
Florida · 31084
Office
Unavailable
Facility
$1213.50
No comparable office rate is available.
Chicago
Illinois · 31084
Office
Unavailable
Facility
$1181.36
No comparable office rate is available.
Manhattan
New York · 31084
Office
Unavailable
Facility
$1241.11
No comparable office rate is available.
Alaska*
Alaska · 31084
Office
Unavailable
Facility
$1328.87
No comparable office rate is available.
Alabama
Alabama · 31084
Office
Unavailable
Facility
$986.68
No comparable office rate is available.
Arkansas
Arkansas · 31084
Office
Unavailable
Facility
$974.65
No comparable office rate is available.
Arizona
Arizona · 31084
Office
Unavailable
Facility
$1056.67
No comparable office rate is available.
Colorado
Colorado · 31084
Office
Unavailable
Facility
$1107.06
No comparable office rate is available.
Connecticut
Connecticut · 31084
Office
Unavailable
Facility
$1148.30
No comparable office rate is available.
Delaware
Delaware · 31084
Office
Unavailable
Facility
$1072.14
No comparable office rate is available.
Fort Lauderdale
Florida · 31084
Office
Unavailable
Facility
$1147.50
No comparable office rate is available.
Rest Of Florida
Florida · 31084
Office
Unavailable
Facility
$1095.87
No comparable office rate is available.
Atlanta
Georgia · 31084
Office
Unavailable
Facility
$1107.35
No comparable office rate is available.
Rest Of Georgia
Georgia · 31084
Office
Unavailable
Facility
$1040.14
No comparable office rate is available.
Hawaii, Guam
Hawaii · 31084
Office
Unavailable
Facility
$1125.17
No comparable office rate is available.
Iowa
Iowa · 31084
Office
Unavailable
Facility
$995.66
No comparable office rate is available.
Idaho
Idaho · 31084
Office
Unavailable
Facility
$1003.69
No comparable office rate is available.
East St. Louis
Illinois · 31084
Office
Unavailable
Facility
$1113.33
No comparable office rate is available.
Rest Of Illinois
Illinois · 31084
Office
Unavailable
Facility
$1077.56
No comparable office rate is available.
Suburban Chicago
Illinois · 31084
Office
Unavailable
Facility
$1155.70
No comparable office rate is available.
Indiana
Indiana · 31084
Office
Unavailable
Facility
$1008.29
No comparable office rate is available.
Kansas
Kansas · 31084
Office
Unavailable
Facility
$997.50
No comparable office rate is available.
Kentucky
Kentucky · 31084
Office
Unavailable
Facility
$1018.86
No comparable office rate is available.
New Orleans
Louisiana · 31084
Office
Unavailable
Facility
$1061.89
No comparable office rate is available.
Rest Of Louisiana
Louisiana · 31084
Office
Unavailable
Facility
$1019.82
No comparable office rate is available.
Metropolitan Boston
Massachusetts · 31084
Office
Unavailable
Facility
$1197.19
No comparable office rate is available.
Rest Of Massachusetts
Massachusetts · 31084
Office
Unavailable
Facility
$1104.37
No comparable office rate is available.
Baltimore/Surr. Cntys
Maryland · 31084
Office
Unavailable
Facility
$1146.17
No comparable office rate is available.
Rest Of Maryland
Maryland · 31084
Office
Unavailable
Facility
$1088.53
No comparable office rate is available.
Rest Of Maine
Maine · 31084
Office
Unavailable
Facility
$1014.29
No comparable office rate is available.
Southern Maine
Maine · 31084
Office
Unavailable
Facility
$1052.21
No comparable office rate is available.
Detroit
Michigan · 31084
Office
Unavailable
Facility
$1113.62
No comparable office rate is available.
Rest Of Michigan
Michigan · 31084
Office
Unavailable
Facility
$1046.69
No comparable office rate is available.
Minnesota
Minnesota · 31084
Office
Unavailable
Facility
$1048.33
No comparable office rate is available.
Metropolitan Kansas City
Missouri · 31084
Office
Unavailable
Facility
$1049.53
No comparable office rate is available.
Metropolitan St. Louis
Missouri · 31084
Office
Unavailable
Facility
$1058.13
No comparable office rate is available.
Rest Of Missouri
Missouri · 31084
Office
Unavailable
Facility
$1008.88
No comparable office rate is available.
Mississippi
Mississippi · 31084
Office
Unavailable
Facility
$991.64
No comparable office rate is available.
Montana**
Montana · 31084
Office
Unavailable
Facility
$1083.05
No comparable office rate is available.
North Carolina
North Carolina · 31084
Office
Unavailable
Facility
$1022.33
No comparable office rate is available.
North Dakota**
North Dakota · 31084
Office
Unavailable
Facility
$1040.93
No comparable office rate is available.
Nebraska
Nebraska · 31084
Office
Unavailable
Facility
$998.51
No comparable office rate is available.
New Hampshire
New Hampshire · 31084
Office
Unavailable
Facility
$1095.83
No comparable office rate is available.
Northern Nj
New Jersey · 31084
Office
Unavailable
Facility
$1202.72
No comparable office rate is available.
Rest Of New Jersey
New Jersey · 31084
Office
Unavailable
Facility
$1157.88
No comparable office rate is available.
New Mexico
New Mexico · 31084
Office
Unavailable
Facility
$1053.91
No comparable office rate is available.
Nevada**
Nevada · 31084
Office
Unavailable
Facility
$1071.84
No comparable office rate is available.
Nyc Suburbs/Long Island
New York · 31084
Office
Unavailable
Facility
$1274.57
No comparable office rate is available.
Poughkpsie/N Nyc Suburbs
New York · 31084
Office
Unavailable
Facility
$1169.93
No comparable office rate is available.
Queens
New York · 31084
Office
Unavailable
Facility
$1241.37
No comparable office rate is available.
Rest Of New York
New York · 31084
Office
Unavailable
Facility
$1035.81
No comparable office rate is available.
Ohio
Ohio · 31084
Office
Unavailable
Facility
$1038.08
No comparable office rate is available.
Oklahoma
Oklahoma · 31084
Office
Unavailable
Facility
$1011.14
No comparable office rate is available.
Portland
Oregon · 31084
Office
Unavailable
Facility
$1131.05
No comparable office rate is available.
Rest Of Oregon
Oregon · 31084
Office
Unavailable
Facility
$1059.96
No comparable office rate is available.
Metropolitan Philadelphia
Pennsylvania · 31084
Office
Unavailable
Facility
$1127.22
No comparable office rate is available.
Rest Of Pennsylvania
Pennsylvania · 31084
Office
Unavailable
Facility
$1036.22
No comparable office rate is available.
Puerto Rico
Puerto Rico · 31084
Office
Unavailable
Facility
$1087.90
No comparable office rate is available.
Rhode Island
Rhode Island · 31084
Office
Unavailable
Facility
$1102.09
No comparable office rate is available.
South Carolina
South Carolina · 31084
Office
Unavailable
Facility
$1032.61
No comparable office rate is available.
South Dakota**
South Dakota · 31084
Office
Unavailable
Facility
$1035.95
No comparable office rate is available.
Tennessee
Tennessee · 31084
Office
Unavailable
Facility
$1002.47
No comparable office rate is available.
Austin
Texas · 31084
Office
Unavailable
Facility
$1106.51
No comparable office rate is available.
Beaumont
Texas · 31084
Office
Unavailable
Facility
$1030.88
No comparable office rate is available.
Brazoria
Texas · 31084
Office
Unavailable
Facility
$1066.71
No comparable office rate is available.
Dallas
Texas · 31084
Office
Unavailable
Facility
$1075.37
No comparable office rate is available.
Fort Worth
Texas · 31084
Office
Unavailable
Facility
$1071.05
No comparable office rate is available.
Galveston
Texas · 31084
Office
Unavailable
Facility
$1071.17
No comparable office rate is available.
Houston
Texas · 31084
Office
Unavailable
Facility
$1110.16
No comparable office rate is available.
Rest Of Texas
Texas · 31084
Office
Unavailable
Facility
$1049.51
No comparable office rate is available.
Utah
Utah · 31084
Office
Unavailable
Facility
$1044.43
No comparable office rate is available.
Virginia
Virginia · 31084
Office
Unavailable
Facility
$1053.35
No comparable office rate is available.
Virgin Islands
United States Virgin Islands · 31084
Office
Unavailable
Facility
$1087.90
No comparable office rate is available.
Vermont
Vermont · 31084
Office
Unavailable
Facility
$1042.80
No comparable office rate is available.
Rest Of Washington
Washington · 31084
Office
Unavailable
Facility
$1100.35
No comparable office rate is available.
Seattle (King Cnty)
Washington · 31084
Office
Unavailable
Facility
$1213.71
No comparable office rate is available.
Wisconsin
Wisconsin · 31084
Office
Unavailable
Facility
$1011.91
No comparable office rate is available.
West Virginia
West Virginia · 31084
Office
Unavailable
Facility
$1045.07
No comparable office rate is available.
Wyoming**
Wyoming · 31084
Office
Unavailable
Facility
$1064.69
No comparable office rate is available.
See how rates vary across the country
31084 · Office / nonfacility · Non-QP. Choose a state to explore its payment localities. A range means the amount varies within that state.
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.
View all state and territory rates as a table
| State / territory | Rate range | Localities |
|---|---|---|
| AK | No published base rate | 1 |
| AL | No published base rate | 1 |
| AR | No published base rate | 1 |
| AZ | No published base rate | 1 |
| CA | No published base rate | 29 |
| CO | No published base rate | 1 |
| CT | No published base rate | 1 |
| DC | No published base rate | 1 |
| DE | No published base rate | 1 |
| FL | No published base rate | 3 |
| GA | No published base rate | 2 |
| GU | No published base rate | 1 |
| HI | No published base rate | 1 |
| IA | No published base rate | 1 |
| ID | No published base rate | 1 |
| IL | No published base rate | 4 |
| IN | No published base rate | 1 |
| KS | No published base rate | 1 |
| KY | No published base rate | 1 |
| LA | No published base rate | 2 |
| MA | No published base rate | 2 |
| MD | No published base rate | 3 |
| ME | No published base rate | 2 |
| MI | No published base rate | 2 |
| MN | No published base rate | 1 |
| MO | No published base rate | 3 |
| MS | No published base rate | 1 |
| MT | No published base rate | 1 |
| NC | No published base rate | 1 |
| ND | No published base rate | 1 |
| NE | No published base rate | 1 |
| NH | No published base rate | 1 |
| NJ | No published base rate | 2 |
| NM | No published base rate | 1 |
| NV | No published base rate | 1 |
| NY | No published base rate | 5 |
| OH | No published base rate | 1 |
| OK | No published base rate | 1 |
| OR | No published base rate | 2 |
| PA | No published base rate | 2 |
| PR | No published base rate | 1 |
| RI | No published base rate | 1 |
| SC | No published base rate | 1 |
| SD | No published base rate | 1 |
| TN | No published base rate | 1 |
| TX | No published base rate | 8 |
| UT | No published base rate | 1 |
| VA | No published base rate | 2 |
| VI | No published base rate | 1 |
| VT | No published base rate | 1 |
| WA | No published base rate | 2 |
| WI | No published base rate | 1 |
| WV | No published base rate | 1 |
| WY | No published base rate | 1 |
Where does this rate apply?
Chico is a Medicare payment area. Our Census mapping connects it to 30 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.
Use this rate
What is a percentage of Medicare worth?
Turn a percentage into dollars for 31084 in Chico. This uses the base rate on this page, so the locality and release stay consistent.
Reference amount per service
$1219.76
$1108.87 × 110% = $1219.76
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.
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 31084 in Chico.
PPRRVU2026_Oct_nonQPP.csv
3,506
- Code
- 31084
- Physician work
- 14.58
- Practice expense
- 15.72
- Malpractice
- 2.13
GPCI2026.csv
9
- Locality
- Chico
- Physician work
- 1.017
- Practice expense
- 1.096
- Malpractice
- 0.536
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 14.58 | × 1.017 | 14.8279 |
| Practice expense | 15.72 | × 1.096 | 17.2291 |
| Malpractice | 2.13 | × 0.536 | 1.1417 |
| Total RVUs | 33.1987 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Chico$1108.87
Open 31084 in the RVU calculator →
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 14.58 | 1.017 |
| Practice expense | 15.72 | 1.096 |
| Malpractice | 2.13 | 0.536 |
(14.58 × 1.017 + 15.72 × 1.096 + 2.13 × 0.536) × $33.4009 = $1108.87
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
31084 · Office / nonfacility
Rate unavailable
Effective 2026-10-01
A rate is unavailable in one of these releases, so a change cannot be calculated.
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
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 from | Office / nonfacility | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | Not available in this setting | $1108.87 | RVU26D |
| 2026-07-01 | Not available in this setting | $1108.87 | RVU26C |
| 2026-04-01 | Not available in this setting | $1108.87 | RVU26B |
| 2026-01-01 | Not available in this setting | $1108.87 | RVU26A |
| 2025-10-01 | Not available in this setting | $1205.63 | RVU25D |
| 2025-07-01 | Not available in this setting | $1205.63 | RVU25C |
| 2025-04-01 | Not available in this setting | $1205.63 | RVU25B |
| 2025-01-01 | Not available in this setting | $1205.63 | RVU25A |
31084 billing questions
How is 31084 distinguished from frontal sinus exploration codes?
Use 31084 when the documented operation meets its removal-procedure definition. Codes 31070 and 31075 represent frontal sinus exploration procedures, so access or exploration alone does not establish 31084.
What documentation supports reporting 31084?
The operative report should identify the frontal sinus, describe the removal performed, and document the surgical approach and extent needed to support selection over other frontal sinus procedure codes.
How does the 90-day global period affect postoperative billing?
The day-before preoperative visit and 90 days of related postoperative care are included in the global period.
How is modifier 50 handled for a bilateral procedure?
CMS pays a bilateral procedure reported with modifier 50 at 150%.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be made. Co-surgeons are paid only with supporting documentation; team surgery is 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 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.
3,50331075,,Exploration of frontal sinus,A,,9.27,11.83,NA,11.83,,1.34,22.44,22.44,0,090,0.10,0.76,0.14,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,50431080,,Removal of frontal sinus,A,,12.42,15.20,NA,15.20,,1.80,29.42,29.42,0,090,0.10,0.76,0.14,2,1,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,50531081,,Removal of frontal sinus,A,,13.84,15.54,NA,15.54,,2.02,31.40,31.40,0,090,0.10,0.76,0.14,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,50631084,,Removal of frontal sinus,A,,14.58,15.72,NA,15.72,,2.13,32.43,32.43,0,090,0.10,0.76,0.14,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,50731085,,Removal of frontal sinus,A,,15.25,15.89,NA,15.89,,2.21,33.35,33.35,0,090,0.10,0.76,0.14,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,50831086,,Removal of frontal sinus,A,,14.00,15.58,NA,15.58,,2.05,31.63,31.63,0,090,0.10,0.76,0.14,2,1,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,50931087,,Removal of frontal sinus,A,,14.21,13.68,NA,13.68,,2.07,29.96,29.96,0,090,0.10,0.76,0.14,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
603102,AZ,00,ARIZONA,1.000,0.969,0.856
707102,AR,13,ARKANSAS,1.000,0.859,0.515
801112,CA,54,BAKERSFIELD,1.019,1.096,0.609
901112,CA,55,CHICO,1.017,1.096,0.536
1001182,CA,71,EL CENTRO,1.017,1.096,0.541
1101112,CA,56,FRESNO,1.017,1.096,0.536
1201112,CA,57,HANFORD-CORCORAN,1.017,1.096,0.536