No office rate
Both codes describe open drainage of an intracranial abscess; choose 61321 for an infratentorial target and 61320 for a supratentorial target.
On this page
CMS RVU26D · Effective 2026-10-01
61321 in Chico
Office / nonfacility
Not available in this setting
Base rate per service
Facility setting
$1953.97
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.
Neurosurgery
About 61321: Infratentorial intracranial abscess drainage
Reports open surgical drainage of an intracranial abscess below the tentorium, such as a cerebellar abscess, through a craniotomy or craniectomy.
A neurosurgeon uses a craniotomy or craniectomy to reach and drain an abscess in the infratentorial compartment, which includes the posterior fossa and cerebellum. The operation is typically performed in a hospital operating room for a patient with an intracranial infection requiring open surgical drainage. This code distinguishes infratentorial abscess drainage from drainage of a supratentorial abscess.
Select the code based on the abscess location and the procedure performed, not merely on the incision site or the presence of infection. The operative report should identify the infratentorial target and document surgical drainage. The service has a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and others at 50%. Modifier 50 is inappropriate. Assistant-at-surgery payment may be available; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
CMS billing rules for 61321
- 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 adjustment does not apply; the descriptor or anatomy makes modifier 50 inappropriate.
- 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 RVU29.77 · 48%
- Practice expense (office) RVU19.60 · 32%
- Malpractice RVU12.58 · 20%
20
Medicare services in 2024 · #5930 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.
61321 compared with similar codes
Office rates for Chico, from the same CMS release.
No office rate
This code describes twist-drill drainage of an intracranial collection, including an abscess; 61321 describes open drainage through a craniotomy or craniectomy.
No office rate
This code describes stereotactic biopsy, aspiration, or excision of an intracranial lesion. Use 61321 when the abscess is drained through an open infratentorial approach.
No office rate
61314 concerns evacuation of an infratentorial extradural or subdural hematoma, not drainage of an abscess.
The same code, a different location
How does Chico compare?
61321 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 · 61321
Office
Unavailable
Facility
$1953.97
No comparable office rate is available.
Modesto
California · 61321
Office
Unavailable
Facility
$1953.97
No comparable office rate is available.
Napa
California · 61321
Office
Unavailable
Facility
$2133.28
No comparable office rate is available.
Oxnard-Thousand Oaks-Ventura
California · 61321
Office
Unavailable
Facility
$2057.77
No comparable office rate is available.
Redding
California · 61321
Office
Unavailable
Facility
$1953.97
No comparable office rate is available.
Rest Of California
California · 61321
Office
Unavailable
Facility
$1953.97
No comparable office rate is available.
Riverside-San Bernardino-Ontario
California · 61321
Office
Unavailable
Facility
$2088.16
No comparable office rate is available.
Sacramento-Roseville-Folsom
California · 61321
Office
Unavailable
Facility
$2016.73
No comparable office rate is available.
Salinas
California · 61321
Office
Unavailable
Facility
$2009.14
No comparable office rate is available.
San Diego-Chula Vista-Carlsbad
California · 61321
Office
Unavailable
Facility
$2034.89
No comparable office rate is available.
San Francisco-Oakland-Berkeley (Marin Cnty)
California · 61321
Office
Unavailable
Facility
$2204.74
No comparable office rate is available.
San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)
California · 61321
Office
Unavailable
Facility
$2190.45
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
California · 61321
Office
Unavailable
Facility
$2272.96
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)
California · 61321
Office
Unavailable
Facility
$2214.55
No comparable office rate is available.
San Luis Obispo-Paso Robles
California · 61321
Office
Unavailable
Facility
$1982.12
No comparable office rate is available.
Santa Cruz-Watsonville
California · 61321
Office
Unavailable
Facility
$2035.85
No comparable office rate is available.
Santa Maria-Santa Barbara
California · 61321
Office
Unavailable
Facility
$2010.74
No comparable office rate is available.
Santa Rosa-Petaluma
California · 61321
Office
Unavailable
Facility
$2053.31
No comparable office rate is available.
Stockton
California · 61321
Office
Unavailable
Facility
$1953.97
No comparable office rate is available.
Vallejo
California · 61321
Office
Unavailable
Facility
$2112.69
No comparable office rate is available.
Visalia
California · 61321
Office
Unavailable
Facility
$1953.97
No comparable office rate is available.
Yuba City
California · 61321
Office
Unavailable
Facility
$1953.97
No comparable office rate is available.
Dc + Md/Va Suburbs
District of Columbia · 61321
Office
Unavailable
Facility
$2286.89
No comparable office rate is available.
Miami
Florida · 61321
Office
Unavailable
Facility
$2738.49
No comparable office rate is available.
Chicago
Illinois · 61321
Office
Unavailable
Facility
$2623.56
No comparable office rate is available.
Manhattan
New York · 61321
Office
Unavailable
Facility
$2485.11
No comparable office rate is available.
Alaska*
Alaska · 61321
Office
Unavailable
Facility
$2420.25
No comparable office rate is available.
Alabama
Alabama · 61321
Office
Unavailable
Facility
$1804.99
No comparable office rate is available.
Arkansas
Arkansas · 61321
Office
Unavailable
Facility
$1773.09
No comparable office rate is available.
Arizona
Arizona · 61321
Office
Unavailable
Facility
$1988.38
No comparable office rate is available.
Colorado
Colorado · 61321
Office
Unavailable
Facility
$2031.00
No comparable office rate is available.
Connecticut
Connecticut · 61321
Office
Unavailable
Facility
$2227.72
No comparable office rate is available.
Delaware
Delaware · 61321
Office
Unavailable
Facility
$2023.86
No comparable office rate is available.
Fort Lauderdale
Florida · 61321
Office
Unavailable
Facility
$2417.20
No comparable office rate is available.
Rest Of Florida
Florida · 61321
Office
Unavailable
Facility
$2251.73
No comparable office rate is available.
Atlanta
Georgia · 61321
Office
Unavailable
Facility
$2167.10
No comparable office rate is available.
Rest Of Georgia
Georgia · 61321
Office
Unavailable
Facility
$2079.16
No comparable office rate is available.
Hawaii, Guam
Hawaii · 61321
Office
Unavailable
Facility
$1981.98
No comparable office rate is available.
Iowa
Iowa · 61321
Office
Unavailable
Facility
$1760.17
No comparable office rate is available.
Idaho
Idaho · 61321
Office
Unavailable
Facility
$1795.38
No comparable office rate is available.
East St. Louis
Illinois · 61321
Office
Unavailable
Facility
$2442.88
No comparable office rate is available.
Rest Of Illinois
Illinois · 61321
Office
Unavailable
Facility
$2248.79
No comparable office rate is available.
Suburban Chicago
Illinois · 61321
Office
Unavailable
Facility
$2418.20
No comparable office rate is available.
Indiana
Indiana · 61321
Office
Unavailable
Facility
$1805.42
No comparable office rate is available.
Kansas
Kansas · 61321
Office
Unavailable
Facility
$1797.93
No comparable office rate is available.
Kentucky
Kentucky · 61321
Office
Unavailable
Facility
$1960.80
No comparable office rate is available.
New Orleans
Louisiana · 61321
Office
Unavailable
Facility
$2087.71
No comparable office rate is available.
Rest Of Louisiana
Louisiana · 61321
Office
Unavailable
Facility
$1976.25
No comparable office rate is available.
Metropolitan Boston
Massachusetts · 61321
Office
Unavailable
Facility
$2190.74
No comparable office rate is available.
Rest Of Massachusetts
Massachusetts · 61321
Office
Unavailable
Facility
$2034.49
No comparable office rate is available.
Baltimore/Surr. Cntys
Maryland · 61321
Office
Unavailable
Facility
$2232.47
No comparable office rate is available.
Rest Of Maryland
Maryland · 61321
Office
Unavailable
Facility
$2052.53
No comparable office rate is available.
Rest Of Maine
Maine · 61321
Office
Unavailable
Facility
$1857.98
No comparable office rate is available.
Southern Maine
Maine · 61321
Office
Unavailable
Facility
$1908.25
No comparable office rate is available.
Detroit
Michigan · 61321
Office
Unavailable
Facility
$2334.52
No comparable office rate is available.
Rest Of Michigan
Michigan · 61321
Office
Unavailable
Facility
$2066.43
No comparable office rate is available.
Minnesota
Minnesota · 61321
Office
Unavailable
Facility
$1792.36
No comparable office rate is available.
Metropolitan Kansas City
Missouri · 61321
Office
Unavailable
Facility
$2019.59
No comparable office rate is available.
Metropolitan St. Louis
Missouri · 61321
Office
Unavailable
Facility
$2038.60
No comparable office rate is available.
Rest Of Missouri
Missouri · 61321
Office
Unavailable
Facility
$1967.92
No comparable office rate is available.
Mississippi
Mississippi · 61321
Office
Unavailable
Facility
$1868.52
No comparable office rate is available.
Montana**
Montana · 61321
Office
Unavailable
Facility
$2068.35
No comparable office rate is available.
North Carolina
North Carolina · 61321
Office
Unavailable
Facility
$1873.64
No comparable office rate is available.
North Dakota**
North Dakota · 61321
Office
Unavailable
Facility
$1819.60
No comparable office rate is available.
Nebraska
Nebraska · 61321
Office
Unavailable
Facility
$1757.42
No comparable office rate is available.
New Hampshire
New Hampshire · 61321
Office
Unavailable
Facility
$2043.50
No comparable office rate is available.
Northern Nj
New Jersey · 61321
Office
Unavailable
Facility
$2265.15
No comparable office rate is available.
Rest Of New Jersey
New Jersey · 61321
Office
Unavailable
Facility
$2209.95
No comparable office rate is available.
New Mexico
New Mexico · 61321
Office
Unavailable
Facility
$2099.31
No comparable office rate is available.
Nevada**
Nevada · 61321
Office
Unavailable
Facility
$1999.67
No comparable office rate is available.
Nyc Suburbs/Long Island
New York · 61321
Office
Unavailable
Facility
$2616.65
No comparable office rate is available.
Poughkpsie/N Nyc Suburbs
New York · 61321
Office
Unavailable
Facility
$2264.36
No comparable office rate is available.
Queens
New York · 61321
Office
Unavailable
Facility
$2437.69
No comparable office rate is available.
Rest Of New York
New York · 61321
Office
Unavailable
Facility
$1911.66
No comparable office rate is available.
Ohio
Ohio · 61321
Office
Unavailable
Facility
$2015.59
No comparable office rate is available.
Oklahoma
Oklahoma · 61321
Office
Unavailable
Facility
$1905.44
No comparable office rate is available.
Portland
Oregon · 61321
Office
Unavailable
Facility
$2050.20
No comparable office rate is available.
Rest Of Oregon
Oregon · 61321
Office
Unavailable
Facility
$1941.77
No comparable office rate is available.
Metropolitan Philadelphia
Pennsylvania · 61321
Office
Unavailable
Facility
$2195.02
No comparable office rate is available.
Rest Of Pennsylvania
Pennsylvania · 61321
Office
Unavailable
Facility
$1992.39
No comparable office rate is available.
Puerto Rico
Puerto Rico · 61321
Office
Unavailable
Facility
$2070.08
No comparable office rate is available.
Rhode Island
Rhode Island · 61321
Office
Unavailable
Facility
$2064.30
No comparable office rate is available.
South Carolina
South Carolina · 61321
Office
Unavailable
Facility
$1956.40
No comparable office rate is available.
South Dakota**
South Dakota · 61321
Office
Unavailable
Facility
$1790.18
No comparable office rate is available.
Tennessee
Tennessee · 61321
Office
Unavailable
Facility
$1815.07
No comparable office rate is available.
Austin
Texas · 61321
Office
Unavailable
Facility
$2061.24
No comparable office rate is available.
Beaumont
Texas · 61321
Office
Unavailable
Facility
$1980.43
No comparable office rate is available.
Brazoria
Texas · 61321
Office
Unavailable
Facility
$1978.81
No comparable office rate is available.
Dallas
Texas · 61321
Office
Unavailable
Facility
$2015.85
No comparable office rate is available.
Fort Worth
Texas · 61321
Office
Unavailable
Facility
$2014.77
No comparable office rate is available.
Galveston
Texas · 61321
Office
Unavailable
Facility
$2000.29
No comparable office rate is available.
Houston
Texas · 61321
Office
Unavailable
Facility
$2230.55
No comparable office rate is available.
Rest Of Texas
Texas · 61321
Office
Unavailable
Facility
$1995.04
No comparable office rate is available.
Utah
Utah · 61321
Office
Unavailable
Facility
$1987.05
No comparable office rate is available.
Virginia
Virginia · 61321
Office
Unavailable
Facility
$1934.52
No comparable office rate is available.
Virgin Islands
United States Virgin Islands · 61321
Office
Unavailable
Facility
$2070.08
No comparable office rate is available.
Vermont
Vermont · 61321
Office
Unavailable
Facility
$1855.07
No comparable office rate is available.
Rest Of Washington
Washington · 61321
Office
Unavailable
Facility
$2016.39
No comparable office rate is available.
Seattle (King Cnty)
Washington · 61321
Office
Unavailable
Facility
$2190.62
No comparable office rate is available.
Wisconsin
Wisconsin · 61321
Office
Unavailable
Facility
$1750.92
No comparable office rate is available.
West Virginia
West Virginia · 61321
Office
Unavailable
Facility
$2164.52
No comparable office rate is available.
Wyoming**
Wyoming · 61321
Office
Unavailable
Facility
$1959.94
No comparable office rate is available.
See how rates vary across the country
61321 · 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 61321 in Chico. This uses the base rate on this page, so the locality and release stay consistent.
Reference amount per service
$2149.37
$1953.97 × 110% = $2149.37
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 61321 in Chico.
PPRRVU2026_Oct_nonQPP.csv
6,765
- Code
- 61321
- Physician work
- 29.77
- Practice expense
- 19.60
- Malpractice
- 12.58
GPCI2026.csv
9
- Locality
- Chico
- Physician work
- 1.017
- Practice expense
- 1.096
- Malpractice
- 0.536
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 29.77 | × 1.017 | 30.2761 |
| Practice expense | 19.60 | × 1.096 | 21.4816 |
| Malpractice | 12.58 | × 0.536 | 6.7429 |
| Total RVUs | 58.5006 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Chico$1953.97
Open 61321 in the RVU calculator →
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 29.77 | 1.017 |
| Practice expense | 19.6 | 1.096 |
| Malpractice | 12.58 | 0.536 |
(29.77 × 1.017 + 19.6 × 1.096 + 12.58 × 0.536) × $33.4009 = $1953.97
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
61321 · 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 | $1953.97 | RVU26D |
| 2026-07-01 | Not available in this setting | $1953.97 | RVU26C |
| 2026-04-01 | Not available in this setting | $1953.97 | RVU26B |
| 2026-01-01 | Not available in this setting | $1953.97 | RVU26A |
| 2025-10-01 | Not available in this setting | $2001.73 | RVU25D |
| 2025-07-01 | Not available in this setting | $2001.73 | RVU25C |
| 2025-04-01 | Not available in this setting | $2001.73 | RVU25B |
| 2025-01-01 | Not available in this setting | $2001.73 | RVU25A |
61321 billing questions
How does this code differ from 61320?
Use 61321 for an abscess below the tentorium, such as in the posterior fossa. Code 61320 is the corresponding service for a supratentorial abscess.
What documentation supports 61321?
The operative report should establish the infratentorial location and describe the open surgical drainage. A diagnosis of intracranial abscess alone does not establish the site distinction.
Can 61321 be reported with modifier 50?
No. CMS identifies bilateral adjustment as inappropriate for this code.
How are assistant and co-surgeon services handled?
Assistant-at-surgery payment may be made. Co-surgeons are paid only when supporting documentation is provided; team surgery is not permitted.
What is included in the global period?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
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.
6,76261315,,Crnec/crnot ittl ntracereblr,A,,28.91,19.26,NA,19.26,,12.22,60.39,60.39,0,090,0.11,0.76,0.13,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,76361316,,Inc&subq plmt crnl bone grf,A,,1.36,0.47,NA,0.47,,0.56,2.39,2.39,0,ZZZ,0.00,0.00,0.00,0,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,76461320,,Crnec/crnot drg icr abs sttl,A,,26.73,17.13,NA,17.13,,11.14,55.00,55.00,0,090,0.11,0.76,0.13,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,76561321,,Crnec/crnot drg icr abs ittl,A,,29.77,19.60,NA,19.60,,12.58,61.95,61.95,0,090,0.11,0.76,0.13,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,76661322,,Crnec/crnot dcmprv w/o lobec,A,,33.40,21.53,NA,21.53,,14.04,68.97,68.97,0,090,0.11,0.76,0.13,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,76761323,,Crnec/crnot dcmprv w/lobec,A,,34.18,20.22,NA,20.22,,14.42,68.82,68.82,0,090,0.11,0.76,0.13,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,76861330,,Dcmprn orbit only transcrnl,A,,24.67,17.70,NA,17.70,,10.43,52.80,52.80,0,090,0.11,0.76,0.13,2,1,2,1,0,9,,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