$185.98
Both codes describe sinus irrigation, but 31000 is for the maxillary sinus; 31002 is for the sphenoid sinus.
On this page
CMS RVU26D · Effective 2026-10-01
31002 in Delaware
Office / nonfacility
Not available in this setting
Base rate per service
Facility setting
$165.85
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 procedure
About 31002: Sphenoid sinus irrigation
Reports lavage of the sphenoid sinus, typically by an otolaryngologist treating retained secretions or inflammatory material in that sinus.
This service involves introducing irrigation fluid into the sphenoid sinus and flushing or clearing its contents. Otolaryngologists typically perform it for a patient with sphenoid sinus disease and retained secretions, often in an office or outpatient setting. The record should identify the sphenoid sinus treated and describe the irrigation performed; symptoms or a diagnosis alone do not establish that lavage occurred.
Report the code for the sphenoid sinus irrigation itself, rather than for operative exploration or creation of a sinus opening. If both sphenoid sinuses are treated, CMS recognizes bilateral reporting with modifier 50, paid at 150%. The service has 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 the others at 50%. An assistant is paid only when medical necessity is documented; co-surgeons and team surgery are not permitted.
CMS billing rules for 31002
- 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 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 RVU1.91 · 38%
- Practice expense (office) RVU2.91 · 58%
- Malpractice RVU0.19 · 4%
304
Medicare services in 2024 · #3985 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.
31002 compared with similar codes
Office rates for Delaware, from the same CMS release.
No office rate
31002 reports sphenoid sinus irrigation. Choose 31050 when the documented service is sphenoid sinus exploration.
No office rate
31287 describes endoscopic sphenoidotomy, not irrigation. Select it when the operative service is creation or enlargement of the sphenoid opening.
No office rate
31288 is the endoscopic sphenoidotomy code when tissue is removed from the sinus; 31002 reports irrigation.
The same code, a different location
How does Delaware compare?
31002 across payment areas
Same release and payment basis · bars start at $0
Delaware · This locality
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.
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Other payment areas listed in Delaware 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
Alabama
Alabama · 31002
Office
Unavailable
Facility
$152.43
No comparable office rate is available.
Arkansas
Arkansas · 31002
Office
Unavailable
Facility
$150.56
No comparable office rate is available.
Arizona
Arizona · 31002
Office
Unavailable
Facility
$163.41
No comparable office rate is available.
Bakersfield
California · 31002
Office
Unavailable
Facility
$175.40
No comparable office rate is available.
Chico
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
El Centro
California · 31002
Office
Unavailable
Facility
$174.84
No comparable office rate is available.
Fresno
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Hanford-Corcoran
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Madera
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Merced
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Modesto
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Napa
California · 31002
Office
Unavailable
Facility
$199.14
No comparable office rate is available.
Oxnard-Thousand Oaks-Ventura
California · 31002
Office
Unavailable
Facility
$184.42
No comparable office rate is available.
Redding
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Rest Of California
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Riverside-San Bernardino-Ontario
California · 31002
Office
Unavailable
Facility
$176.88
No comparable office rate is available.
Sacramento-Roseville-Folsom
California · 31002
Office
Unavailable
Facility
$182.53
No comparable office rate is available.
Salinas
California · 31002
Office
Unavailable
Facility
$181.83
No comparable office rate is available.
San Diego-Chula Vista-Carlsbad
California · 31002
Office
Unavailable
Facility
$185.40
No comparable office rate is available.
San Francisco-Oakland-Berkeley (Marin Cnty)
California · 31002
Office
Unavailable
Facility
$209.82
No comparable office rate is available.
San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)
California · 31002
Office
Unavailable
Facility
$209.60
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
California · 31002
Office
Unavailable
Facility
$214.37
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)
California · 31002
Office
Unavailable
Facility
$213.49
No comparable office rate is available.
San Luis Obispo-Paso Robles
California · 31002
Office
Unavailable
Facility
$178.99
No comparable office rate is available.
Santa Cruz-Watsonville
California · 31002
Office
Unavailable
Facility
$186.63
No comparable office rate is available.
Santa Maria-Santa Barbara
California · 31002
Office
Unavailable
Facility
$182.31
No comparable office rate is available.
Santa Rosa-Petaluma
California · 31002
Office
Unavailable
Facility
$188.47
No comparable office rate is available.
Stockton
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Vallejo
California · 31002
Office
Unavailable
Facility
$198.83
No comparable office rate is available.
Visalia
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Yuba City
California · 31002
Office
Unavailable
Facility
$174.81
No comparable office rate is available.
Colorado
Colorado · 31002
Office
Unavailable
Facility
$172.93
No comparable office rate is available.
Connecticut
Connecticut · 31002
Office
Unavailable
Facility
$177.43
No comparable office rate is available.
Fort Lauderdale
Florida · 31002
Office
Unavailable
Facility
$173.73
No comparable office rate is available.
Rest Of Florida
Florida · 31002
Office
Unavailable
Facility
$166.25
No comparable office rate is available.
Atlanta
Georgia · 31002
Office
Unavailable
Facility
$170.36
No comparable office rate is available.
Rest Of Georgia
Georgia · 31002
Office
Unavailable
Facility
$158.06
No comparable office rate is available.
Hawaii, Guam
Hawaii · 31002
Office
Unavailable
Facility
$177.98
No comparable office rate is available.
Iowa
Iowa · 31002
Office
Unavailable
Facility
$155.25
No comparable office rate is available.
Idaho
Idaho · 31002
Office
Unavailable
Facility
$156.22
No comparable office rate is available.
East St. Louis
Illinois · 31002
Office
Unavailable
Facility
$166.00
No comparable office rate is available.
Rest Of Illinois
Illinois · 31002
Office
Unavailable
Facility
$162.46
No comparable office rate is available.
Suburban Chicago
Illinois · 31002
Office
Unavailable
Facility
$175.31
No comparable office rate is available.
Indiana
Indiana · 31002
Office
Unavailable
Facility
$156.98
No comparable office rate is available.
Kansas
Kansas · 31002
Office
Unavailable
Facility
$154.86
No comparable office rate is available.
Kentucky
Kentucky · 31002
Office
Unavailable
Facility
$156.01
No comparable office rate is available.
New Orleans
Louisiana · 31002
Office
Unavailable
Facility
$162.47
No comparable office rate is available.
Rest Of Louisiana
Louisiana · 31002
Office
Unavailable
Facility
$155.89
No comparable office rate is available.
Metropolitan Boston
Massachusetts · 31002
Office
Unavailable
Facility
$188.11
No comparable office rate is available.
Rest Of Massachusetts
Massachusetts · 31002
Office
Unavailable
Facility
$172.22
No comparable office rate is available.
Baltimore/Surr. Cntys
Maryland · 31002
Office
Unavailable
Facility
$176.96
No comparable office rate is available.
Rest Of Maryland
Maryland · 31002
Office
Unavailable
Facility
$168.62
No comparable office rate is available.
Rest Of Maine
Maine · 31002
Office
Unavailable
Facility
$157.16
No comparable office rate is available.
Southern Maine
Maine · 31002
Office
Unavailable
Facility
$164.12
No comparable office rate is available.
Detroit
Michigan · 31002
Office
Unavailable
Facility
$168.29
No comparable office rate is available.
Rest Of Michigan
Michigan · 31002
Office
Unavailable
Facility
$159.70
No comparable office rate is available.
Minnesota
Minnesota · 31002
Office
Unavailable
Facility
$165.69
No comparable office rate is available.
Metropolitan Kansas City
Missouri · 31002
Office
Unavailable
Facility
$161.26
No comparable office rate is available.
Metropolitan St. Louis
Missouri · 31002
Office
Unavailable
Facility
$162.69
No comparable office rate is available.
Rest Of Missouri
Missouri · 31002
Office
Unavailable
Facility
$153.76
No comparable office rate is available.
Mississippi
Mississippi · 31002
Office
Unavailable
Facility
$152.17
No comparable office rate is available.
Montana**
Montana · 31002
Office
Unavailable
Facility
$167.33
No comparable office rate is available.
North Carolina
North Carolina · 31002
Office
Unavailable
Facility
$158.54
No comparable office rate is available.
North Dakota**
North Dakota · 31002
Office
Unavailable
Facility
$163.57
No comparable office rate is available.
Nebraska
Nebraska · 31002
Office
Unavailable
Facility
$155.91
No comparable office rate is available.
New Hampshire
New Hampshire · 31002
Office
Unavailable
Facility
$170.53
No comparable office rate is available.
Northern Nj
New Jersey · 31002
Office
Unavailable
Facility
$187.34
No comparable office rate is available.
Rest Of New Jersey
New Jersey · 31002
Office
Unavailable
Facility
$179.45
No comparable office rate is available.
New Mexico
New Mexico · 31002
Office
Unavailable
Facility
$160.55
No comparable office rate is available.
Nevada**
Nevada · 31002
Office
Unavailable
Facility
$166.38
No comparable office rate is available.
Nyc Suburbs/Long Island
New York · 31002
Office
Unavailable
Facility
$195.23
No comparable office rate is available.
Poughkpsie/N Nyc Suburbs
New York · 31002
Office
Unavailable
Facility
$180.78
No comparable office rate is available.
Queens
New York · 31002
Office
Unavailable
Facility
$191.92
No comparable office rate is available.
Rest Of New York
New York · 31002
Office
Unavailable
Facility
$160.59
No comparable office rate is available.
Ohio
Ohio · 31002
Office
Unavailable
Facility
$158.93
No comparable office rate is available.
Oklahoma
Oklahoma · 31002
Office
Unavailable
Facility
$155.52
No comparable office rate is available.
Portland
Oregon · 31002
Office
Unavailable
Facility
$177.52
No comparable office rate is available.
Rest Of Oregon
Oregon · 31002
Office
Unavailable
Facility
$165.06
No comparable office rate is available.
Metropolitan Philadelphia
Pennsylvania · 31002
Office
Unavailable
Facility
$173.70
No comparable office rate is available.
Rest Of Pennsylvania
Pennsylvania · 31002
Office
Unavailable
Facility
$159.02
No comparable office rate is available.
Puerto Rico
Puerto Rico · 31002
Office
Unavailable
Facility
$168.31
No comparable office rate is available.
Rhode Island
Rhode Island · 31002
Office
Unavailable
Facility
$171.07
No comparable office rate is available.
South Carolina
South Carolina · 31002
Office
Unavailable
Facility
$159.00
No comparable office rate is available.
South Dakota**
South Dakota · 31002
Office
Unavailable
Facility
$163.12
No comparable office rate is available.
Tennessee
Tennessee · 31002
Office
Unavailable
Facility
$155.56
No comparable office rate is available.
Austin
Texas · 31002
Office
Unavailable
Facility
$172.38
No comparable office rate is available.
Beaumont
Texas · 31002
Office
Unavailable
Facility
$158.14
No comparable office rate is available.
Brazoria
Texas · 31002
Office
Unavailable
Facility
$165.58
No comparable office rate is available.
Dallas
Texas · 31002
Office
Unavailable
Facility
$166.62
No comparable office rate is available.
Fort Worth
Texas · 31002
Office
Unavailable
Facility
$165.73
No comparable office rate is available.
Galveston
Texas · 31002
Office
Unavailable
Facility
$166.08
No comparable office rate is available.
Houston
Texas · 31002
Office
Unavailable
Facility
$169.55
No comparable office rate is available.
Rest Of Texas
Texas · 31002
Office
Unavailable
Facility
$161.77
No comparable office rate is available.
Utah
Utah · 31002
Office
Unavailable
Facility
$160.86
No comparable office rate is available.
Virginia
Virginia · 31002
Office
Unavailable
Facility
$163.82
No comparable office rate is available.
Virgin Islands
United States Virgin Islands · 31002
Office
Unavailable
Facility
$168.31
No comparable office rate is available.
Vermont
Vermont · 31002
Office
Unavailable
Facility
$163.23
No comparable office rate is available.
Rest Of Washington
Washington · 31002
Office
Unavailable
Facility
$171.80
No comparable office rate is available.
Seattle (King Cnty)
Washington · 31002
Office
Unavailable
Facility
$191.43
No comparable office rate is available.
Wisconsin
Wisconsin · 31002
Office
Unavailable
Facility
$158.86
No comparable office rate is available.
West Virginia
West Virginia · 31002
Office
Unavailable
Facility
$157.34
No comparable office rate is available.
Wyoming**
Wyoming · 31002
Office
Unavailable
Facility
$165.69
No comparable office rate is available.
See how rates vary across the country
31002 · 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?
Delaware is a Medicare payment area. Our Census mapping connects it to 79 cities and communities in Delaware, 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 31002 in Delaware. This uses the base rate on this page, so the locality and release stay consistent.
Reference amount per service
$182.44
$165.85 × 110% = $182.44
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 31002 in Delaware.
PPRRVU2026_Oct_nonQPP.csv
3,494
- Code
- 31002
- Physician work
- 1.91
- Practice expense
- 2.91
- Malpractice
- 0.19
GPCI2026.csv
40
- Locality
- Delaware
- Physician work
- 1.005
- Practice expense
- 0.988
- Malpractice
- 0.899
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 1.91 | × 1.005 | 1.9195 |
| Practice expense | 2.91 | × 0.988 | 2.8751 |
| Malpractice | 0.19 | × 0.899 | 0.1708 |
| Total RVUs | 4.9654 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Delaware$165.85
Open 31002 in the RVU calculator →
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 1.91 | 1.005 |
| Practice expense | 2.91 | 0.988 |
| Malpractice | 0.19 | 0.899 |
(1.91 × 1.005 + 2.91 × 0.988 + 0.19 × 0.899) × $33.4009 = $165.85
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
31002 · 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 | $165.85 | RVU26D |
| 2026-07-01 | Not available in this setting | $165.85 | RVU26C |
| 2026-04-01 | Not available in this setting | $165.85 | RVU26B |
| 2026-01-01 | Not available in this setting | $165.85 | RVU26A |
| 2025-10-01 | Not available in this setting | $180.81 | RVU25D |
| 2025-07-01 | Not available in this setting | $180.81 | RVU25C |
| 2025-04-01 | Not available in this setting | $180.81 | RVU25B |
| 2025-01-01 | Not available in this setting | $180.81 | RVU25A |
31002 billing questions
How is sphenoid irrigation different from sphenoid exploration?
Use this code when the documented service is irrigation of the sphenoid sinus. Exploration is a different operative service and should be selected when exploration, rather than lavage, was performed.
Can modifier 50 be reported when both sphenoid sinuses are irrigated?
Yes. CMS identifies the procedure as bilateral with modifier 50, paid at 150%; document that irrigation was performed on both sides.
Are related postoperative visits separately reported during the global period?
Related postoperative visits during the 10-day global period are included in the procedure.
How does the multiple-procedure reduction work?
When procedures are performed in the same session, the highest-valued procedure is paid in full and the others at 50%.
Can an assistant or another surgeon be reported?
Assistant-at-surgery payment requires documentation of medical necessity. CMS does not permit co-surgeons or team surgery for this code.
What documentation supports reporting this code?
Document the sphenoid sinus treated and the irrigation performed. A diagnosis of sinusitis without documentation of lavage does not describe this service.
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.
3,4913096F,,Central dexa ordered,I,,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
3,49230999,,Unlisted procedure nose,C,,0.00,0.00,,0.00,,0.00,0.00,0.00,0,YYY,0.00,0.00,0.00,2,0,0,1,1,9,,33.4009,09,0,99,0.00,0.00,0.00
3,49331000,,Irrigation maxillary sinus,A,,1.17,4.30,,1.73,,0.16,5.63,3.06,0,010,0.10,0.80,0.10,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,49431002,,Irrigation sphenoid sinus,A,,1.91,2.91,NA,2.91,,0.19,5.01,5.01,0,010,0.10,0.80,0.10,2,1,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,4953100F,,Image test ref carot diam,I,,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
3,49631020,,Exploration maxillary sinus,A,,2.99,9.57,,6.43,,0.37,12.93,9.79,0,090,0.10,0.76,0.14,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,49731030,,Exploration maxillary sinus,A,,5.86,12.89,,7.56,,0.78,19.53,14.20,0,090,0.10,0.76,0.14,2,1,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3704112,CO,01,COLORADO,1.012,1.064,0.781
3813102,CT,00,CONNECTICUT,1.020,1.077,1.210
3912202,DC,01,DC + MD/VA SUBURBS,1.054,1.178,1.113
4012102,DE,01,DELAWARE,1.005,0.988,0.899
4109102,FL,03,FORT LAUDERDALE,1.000,1.013,1.808
4209102,FL,04,MIAMI,1.000,1.041,2.529
4309102,FL,99,REST OF FLORIDA,1.000,0.956,1.503