58100 describes endometrial sampling without colposcopy. Use 58110 when the endometrial sample is obtained in conjunction with a colposcopy.
On this page
CMS RVU26D · Effective 2026-10-01
58110 in Modesto
Office / nonfacility
$51.41
Base rate per service
Facility setting
$34.21
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.
Gynecology procedure
About 58110: Endometrial biopsy during colposcopy
Reports endometrial tissue sampling performed during a colposcopy when the uterine lining is evaluated separately from cervical or vaginal tissue.
This add-on represents a sample of the uterine lining obtained while the clinician performs a colposcopy. An OB-GYN or other qualified clinician may use an office endometrial sampler to investigate a uterine concern, such as abnormal bleeding, during a visit that also evaluates an abnormal cervical screening result. The endometrial specimen is distinct from tissue taken from the cervix or endocervical canal during colposcopy.
Report 58110 only with the primary colposcopy procedure; use 58100 for endometrial sampling performed without colposcopy. The record should identify the colposcopy and separately document endometrial sampling, its indication, method, and specimen. Cervical biopsy or endocervical curettage alone does not represent sampling of the uterine lining. CMS pays this add-on within the primary procedure's global period, so payment is associated with that primary service's global period.
CMS billing rules for 58110
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
Where the value comes from
- Work RVU0.75 · 49%
- Practice expense (office) RVU0.64 · 42%
- Malpractice RVU0.14 · 9%
671
Medicare services in 2024 · #3298 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.
58110 compared with similar codes
Office rates for Modesto, from the same CMS release.
57454 covers colposcopy with cervical biopsy and endocervical curettage. It does not represent a separate sample from the uterine lining.
57456 covers colposcopy with endocervical curettage. 58110 represents endometrial sampling, a distinct specimen site.
The same code, a different location
How does Modesto compare?
In Bakersfield, the office rate for 58110 is $51.80—$0.39 higher than the $51.41 rate in Modesto. Both use the same code, release and participation basis.
58110 across payment areas
Same release and payment basis · bars start at $0
Modesto · This locality
$51.41
$51.80
$0.39 higher than Modesto
$51.41
The same base rate than Modesto
$51.44
$0.03 higher than Modesto
$51.41
The same base rate than Modesto
$51.41
The same base rate than Modesto
$3.06 higher than Modesto
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, 58110 ranges from $45.82 in Arkansas to $62.92 in Alaska*. 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 · 58110
Office
$51.41
Facility
$34.21
The same base rate than Modesto for the office setting.
Merced
California · 58110
Office
$51.41
Facility
$34.21
The same base rate than Modesto for the office setting.
Napa
California · 58110
Office
$57.18
Facility
$36.49
$5.77 higher than Modesto for the office setting.
Oxnard-Thousand Oaks-Ventura
California · 58110
Office
$53.93
Facility
$35.38
$2.52 higher than Modesto for the office setting.
Redding
California · 58110
Office
$51.41
Facility
$34.21
The same base rate than Modesto for the office setting.
Rest Of California
California · 58110
Office
$51.41
Facility
$34.21
The same base rate than Modesto for the office setting.
Riverside-San Bernardino-Ontario
California · 58110
Office
$52.92
Facility
$35.71
$1.51 higher than Modesto for the office setting.
Sacramento-Roseville-Folsom
California · 58110
Office
$53.32
Facility
$35.06
$1.91 higher than Modesto for the office setting.
Salinas
California · 58110
Office
$53.11
Facility
$34.91
$1.70 higher than Modesto for the office setting.
San Diego-Chula Vista-Carlsbad
California · 58110
Office
$53.90
Facility
$35.13
$2.49 higher than Modesto for the office setting.
San Francisco-Oakland-Berkeley (Marin Cnty)
California · 58110
Office
$59.72
Facility
$37.58
$8.31 higher than Modesto for the office setting.
San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)
California · 58110
Office
$59.56
Facility
$37.42
$8.15 higher than Modesto for the office setting.
San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
California · 58110
Office
$61.14
Facility
$38.50
$9.73 higher than Modesto for the office setting.
San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)
California · 58110
Office
$60.49
Facility
$37.85
$9.08 higher than Modesto for the office setting.
San Luis Obispo-Paso Robles
California · 58110
Office
$52.33
Facility
$34.45
$0.92 higher than Modesto for the office setting.
Santa Cruz-Watsonville
California · 58110
Office
$54.06
Facility
$34.98
$2.65 higher than Modesto for the office setting.
Santa Maria-Santa Barbara
California · 58110
Office
$53.18
Facility
$34.88
$1.77 higher than Modesto for the office setting.
Santa Rosa-Petaluma
California · 58110
Office
$54.56
Facility
$35.28
$3.15 higher than Modesto for the office setting.
Stockton
California · 58110
Office
$51.41
Facility
$34.21
The same base rate than Modesto for the office setting.
Vallejo
California · 58110
Office
$56.95
Facility
$36.26
$5.54 higher than Modesto for the office setting.
Visalia
California · 58110
Office
$51.41
Facility
$34.21
The same base rate than Modesto for the office setting.
Yuba City
California · 58110
Office
$51.41
Facility
$34.21
The same base rate than Modesto for the office setting.
Dc + Md/Va Suburbs
District of Columbia · 58110
Office
$56.79
Facility
$38.30
$5.38 higher than Modesto for the office setting.
Miami
Florida · 58110
Office
$59.13
Facility
$42.79
$7.72 higher than Modesto for the office setting.
Chicago
Illinois · 58110
Office
$57.44
Facility
$41.66
$6.03 higher than Modesto for the office setting.
Manhattan
New York · 58110
Office
$58.91
Facility
$40.67
$7.50 higher than Modesto for the office setting.
Alaska*
Alaska · 58110
Office
$62.92
Facility
$46.20
$11.51 higher than Modesto for the office setting.
Alabama
Alabama · 58110
Office
$46.40
Facility
$32.67
$5.01 lower than Modesto for the office setting.
Arkansas
Arkansas · 58110
Office
$45.82
Facility
$32.34
$5.59 lower than Modesto for the office setting.
Arizona
Arizona · 58110
Office
$49.77
Facility
$34.56
$1.64 lower than Modesto for the office setting.
Colorado
Colorado · 58110
Office
$51.75
Facility
$35.04
$0.34 higher than Modesto for the office setting.
Connecticut
Connecticut · 58110
Office
$54.23
Facility
$37.33
$2.82 higher than Modesto for the office setting.
Delaware
Delaware · 58110
Office
$50.50
Facility
$34.99
$0.91 lower than Modesto for the office setting.
Fort Lauderdale
Florida · 58110
Office
$55.16
Facility
$39.26
$3.75 higher than Modesto for the office setting.
Rest Of Florida
Florida · 58110
Office
$52.51
Facility
$37.51
$1.10 higher than Modesto for the office setting.
Atlanta
Georgia · 58110
Office
$52.46
Facility
$36.51
$1.05 higher than Modesto for the office setting.
Rest Of Georgia
Georgia · 58110
Office
$49.69
Facility
$35.69
$1.72 lower than Modesto for the office setting.
Hawaii, Guam
Hawaii · 58110
Office
$52.06
Facility
$34.21
$0.65 higher than Modesto for the office setting.
Iowa
Iowa · 58110
Office
$46.47
Facility
$32.10
$4.94 lower than Modesto for the office setting.
Idaho
Idaho · 58110
Office
$46.93
Facility
$32.49
$4.48 lower than Modesto for the office setting.
East St. Louis
Illinois · 58110
Office
$54.13
Facility
$39.69
$2.72 higher than Modesto for the office setting.
Rest Of Illinois
Illinois · 58110
Office
$51.88
Facility
$37.54
$0.47 higher than Modesto for the office setting.
Suburban Chicago
Illinois · 58110
Office
$55.47
Facility
$39.34
$4.06 higher than Modesto for the office setting.
Indiana
Indiana · 58110
Office
$47.14
Facility
$32.59
$4.27 lower than Modesto for the office setting.
Kansas
Kansas · 58110
Office
$46.73
Facility
$32.54
$4.68 lower than Modesto for the office setting.
Kentucky
Kentucky · 58110
Office
$48.33
Facility
$34.38
$3.08 lower than Modesto for the office setting.
New Orleans
Louisiana · 58110
Office
$50.48
Facility
$35.71
$0.93 lower than Modesto for the office setting.
Rest Of Louisiana
Louisiana · 58110
Office
$48.45
Facility
$34.56
$2.96 lower than Modesto for the office setting.
Metropolitan Boston
Massachusetts · 58110
Office
$55.76
Facility
$37.02
$4.35 higher than Modesto for the office setting.
Rest Of Massachusetts
Massachusetts · 58110
Office
$51.69
Facility
$35.16
$0.28 higher than Modesto for the office setting.
Baltimore/Surr. Cntys
Maryland · 58110
Office
$54.17
Facility
$37.33
$2.76 higher than Modesto for the office setting.
Rest Of Maryland
Maryland · 58110
Office
$51.23
Facility
$35.34
$0.18 lower than Modesto for the office setting.
Rest Of Maine
Maine · 58110
Office
$47.63
Facility
$33.18
$3.78 lower than Modesto for the office setting.
Southern Maine
Maine · 58110
Office
$49.19
Facility
$33.63
$2.22 lower than Modesto for the office setting.
Detroit
Michigan · 58110
Office
$53.56
Facility
$38.41
$2.15 higher than Modesto for the office setting.
Rest Of Michigan
Michigan · 58110
Office
$49.85
Facility
$35.51
$1.56 lower than Modesto for the office setting.
Minnesota
Minnesota · 58110
Office
$48.43
Facility
$32.28
$2.98 lower than Modesto for the office setting.
Metropolitan Kansas City
Missouri · 58110
Office
$49.69
Facility
$34.95
$1.72 lower than Modesto for the office setting.
Metropolitan St. Louis
Missouri · 58110
Office
$50.09
Facility
$35.14
$1.32 lower than Modesto for the office setting.
Rest Of Missouri
Missouri · 58110
Office
$48.03
Facility
$34.50
$3.38 lower than Modesto for the office setting.
Mississippi
Mississippi · 58110
Office
$46.91
Facility
$33.40
$4.50 lower than Modesto for the office setting.
Montana**
Montana · 58110
Office
$51.09
Facility
$35.40
$0.32 lower than Modesto for the office setting.
North Carolina
North Carolina · 58110
Office
$47.98
Facility
$33.34
$3.43 lower than Modesto for the office setting.
North Dakota**
North Dakota · 58110
Office
$48.33
Facility
$32.63
$3.08 lower than Modesto for the office setting.
Nebraska
Nebraska · 58110
Office
$46.55
Facility
$32.06
$4.86 lower than Modesto for the office setting.
New Hampshire
New Hampshire · 58110
Office
$51.40
Facility
$35.05
$0.01 lower than Modesto for the office setting.
Northern Nj
New Jersey · 58110
Office
$56.42
Facility
$38.21
$5.01 higher than Modesto for the office setting.
Rest Of New Jersey
New Jersey · 58110
Office
$54.53
Facility
$37.38
$3.12 higher than Modesto for the office setting.
New Mexico
New Mexico · 58110
Office
$50.27
Facility
$35.87
$1.14 lower than Modesto for the office setting.
Nevada**
Nevada · 58110
Office
$50.34
Facility
$34.63
$1.07 lower than Modesto for the office setting.
Nyc Suburbs/Long Island
New York · 58110
Office
$60.75
Facility
$42.09
$9.34 higher than Modesto for the office setting.
Poughkpsie/N Nyc Suburbs
New York · 58110
Office
$55.24
Facility
$38.05
$3.83 higher than Modesto for the office setting.
Queens
New York · 58110
Office
$58.66
Facility
$40.11
$7.25 higher than Modesto for the office setting.
Rest Of New York
New York · 58110
Office
$48.65
Facility
$33.73
$2.76 lower than Modesto for the office setting.
Ohio
Ohio · 58110
Office
$49.28
Facility
$34.95
$2.13 lower than Modesto for the office setting.
Oklahoma
Oklahoma · 58110
Office
$47.77
Facility
$33.75
$3.64 lower than Modesto for the office setting.
Portland
Oregon · 58110
Office
$52.68
Facility
$35.24
$1.27 higher than Modesto for the office setting.
Rest Of Oregon
Oregon · 58110
Office
$49.63
Facility
$33.99
$1.78 lower than Modesto for the office setting.
Metropolitan Philadelphia
Pennsylvania · 58110
Office
$53.33
Facility
$36.99
$1.92 higher than Modesto for the office setting.
Rest Of Pennsylvania
Pennsylvania · 58110
Office
$49.09
Facility
$34.68
$2.32 lower than Modesto for the office setting.
Puerto Rico
Puerto Rico · 58110
Office
$51.27
Facility
$35.40
$0.14 lower than Modesto for the office setting.
Rhode Island
Rhode Island · 58110
Office
$51.78
Facility
$35.56
$0.37 higher than Modesto for the office setting.
South Carolina
South Carolina · 58110
Office
$48.78
Facility
$34.27
$2.63 lower than Modesto for the office setting.
South Dakota**
South Dakota · 58110
Office
$48.00
Facility
$32.30
$3.41 lower than Modesto for the office setting.
Tennessee
Tennessee · 58110
Office
$46.99
Facility
$32.72
$4.42 lower than Modesto for the office setting.
Austin
Texas · 58110
Office
$51.86
Facility
$35.25
$0.45 higher than Modesto for the office setting.
Beaumont
Texas · 58110
Office
$48.85
Facility
$34.56
$2.56 lower than Modesto for the office setting.
Brazoria
Texas · 58110
Office
$50.08
Facility
$34.53
$1.33 lower than Modesto for the office setting.
Dallas
Texas · 58110
Office
$50.58
Facility
$34.94
$0.83 lower than Modesto for the office setting.
Fort Worth
Texas · 58110
Office
$50.43
Facility
$34.95
$0.98 lower than Modesto for the office setting.
Galveston
Texas · 58110
Office
$50.35
Facility
$34.76
$1.06 lower than Modesto for the office setting.
Houston
Texas · 58110
Office
$52.91
Facility
$37.32
$1.50 higher than Modesto for the office setting.
Rest Of Texas
Texas · 58110
Office
$49.56
Facility
$34.66
$1.85 lower than Modesto for the office setting.
Utah
Utah · 58110
Office
$49.34
Facility
$34.59
$2.07 lower than Modesto for the office setting.
Virginia
Virginia · 58110
Office
$49.37
Facility
$33.93
$2.04 lower than Modesto for the office setting.
Virgin Islands
United States Virgin Islands · 58110
Office
$51.27
Facility
$35.40
$0.14 lower than Modesto for the office setting.
Vermont
Vermont · 58110
Office
$48.58
Facility
$33.04
$2.83 lower than Modesto for the office setting.
Rest Of Washington
Washington · 58110
Office
$51.44
Facility
$34.91
$0.03 higher than Modesto for the office setting.
Seattle (King Cnty)
Washington · 58110
Office
$56.35
Facility
$37.09
$4.94 higher than Modesto for the office setting.
Wisconsin
Wisconsin · 58110
Office
$46.97
Facility
$31.93
$4.44 lower than Modesto for the office setting.
West Virginia
West Virginia · 58110
Office
$50.32
Facility
$36.68
$1.09 lower than Modesto for the office setting.
Wyoming**
Wyoming · 58110
Office
$49.89
Facility
$34.19
$1.52 lower than Modesto for the office setting.
See how rates vary across the country
58110 · 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.
$45.82
$62.92
Color shows the midpoint of each state’s locality range.
View all state and territory rates as a table
| State / territory | Rate range | Localities |
|---|---|---|
| AK | $62.92 | 1 |
| AL | $46.40 | 1 |
| AR | $45.82 | 1 |
| AZ | $49.77 | 1 |
| CA | $51.41–$61.14 | 29 |
| CO | $51.75 | 1 |
| CT | $54.23 | 1 |
| DC | $56.79 | 1 |
| DE | $50.50 | 1 |
| FL | $52.51–$59.13 | 3 |
| GA | $49.69–$52.46 | 2 |
| GU | $52.06 | 1 |
| HI | $52.06 | 1 |
| IA | $46.47 | 1 |
| ID | $46.93 | 1 |
| IL | $51.88–$57.44 | 4 |
| IN | $47.14 | 1 |
| KS | $46.73 | 1 |
| KY | $48.33 | 1 |
| LA | $48.45–$50.48 | 2 |
| MA | $51.69–$55.76 | 2 |
| MD | $51.23–$56.79 | 3 |
| ME | $47.63–$49.19 | 2 |
| MI | $49.85–$53.56 | 2 |
| MN | $48.43 | 1 |
| MO | $48.03–$50.09 | 3 |
| MS | $46.91 | 1 |
| MT | $51.09 | 1 |
| NC | $47.98 | 1 |
| ND | $48.33 | 1 |
| NE | $46.55 | 1 |
| NH | $51.40 | 1 |
| NJ | $54.53–$56.42 | 2 |
| NM | $50.27 | 1 |
| NV | $50.34 | 1 |
| NY | $48.65–$60.75 | 5 |
| OH | $49.28 | 1 |
| OK | $47.77 | 1 |
| OR | $49.63–$52.68 | 2 |
| PA | $49.09–$53.33 | 2 |
| PR | $51.27 | 1 |
| RI | $51.78 | 1 |
| SC | $48.78 | 1 |
| SD | $48.00 | 1 |
| TN | $46.99 | 1 |
| TX | $48.85–$52.91 | 8 |
| UT | $49.34 | 1 |
| VA | $49.37–$56.79 | 2 |
| VI | $51.27 | 1 |
| VT | $48.58 | 1 |
| WA | $51.44–$56.35 | 2 |
| WI | $46.97 | 1 |
| WV | $50.32 | 1 |
| WY | $49.89 | 1 |
Where does this rate apply?
Modesto is a Medicare payment area. Our Census mapping connects it to 33 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.
Why are the office and facility amounts different?
For 58110 in Modesto, the physician’s office rate is $51.41 and the facility-setting rate is $34.21: a difference of $17.20.
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.
Use this rate
What is a percentage of Medicare worth?
Turn a percentage into dollars for 58110 in Modesto. This uses the base rate on this page, so the locality and release stay consistent.
Reference amount per service
$56.55
$51.41 × 110% = $56.55
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 58110 in Modesto.
PPRRVU2026_Oct_nonQPP.csv
6,517
- Code
- 58110
- Physician work
- 0.75
- Practice expense
- 0.64
- Malpractice
- 0.14
GPCI2026.csv
16
- Locality
- Modesto
- Physician work
- 1.017
- Practice expense
- 1.096
- Malpractice
- 0.536
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.75 | × 1.017 | 0.7627 |
| Practice expense | 0.64 | × 1.096 | 0.7014 |
| Malpractice | 0.14 | × 0.536 | 0.0750 |
| Total RVUs | 1.5392 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Modesto$51.41
Open 58110 in the RVU calculator →
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.75 | 1.017 |
| Practice expense | 0.64 | 1.096 |
| Malpractice | 0.14 | 0.536 |
(0.75 × 1.017 + 0.64 × 1.096 + 0.14 × 0.536) × $33.4009 = $51.41
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0.75 | 1.017 |
| Practice expense | 0.17 | 1.096 |
| Malpractice | 0.14 | 0.536 |
(0.75 × 1.017 + 0.17 × 1.096 + 0.14 × 0.536) × $33.4009 = $34.21
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
58110 · Office / nonfacility
$51.41
Effective 2026-10-01
The base rate is $2.59 higher than on 2025-10-01, moving from $48.82 to $51.41 (5.3%).
It is unchanged from the immediately preceding available release, effective 2026-07-01.
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
January 1, 2026
RVU26A
$48.82changed to$51.41
- Conversion factor 32.3465 changed to 33.4009
- Work RVU 0.77 changed to 0.75
- Practice expense RVU 0.60 changed to 0.64
- Malpractice RVU 0.13 changed to 0.14
- 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.
January 1, 2025
RVU25A
Earliest loaded release: $48.82
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
58110 billing questions
When should 58110 be reported instead of 58100?
Report 58110 when endometrial sampling is performed in conjunction with a colposcopy. Use 58100 for endometrial sampling performed without colposcopy.
Does a cervical biopsy or endocervical curettage support 58110?
No. The add-on represents sampling of the uterine lining; cervical biopsy and endocervical curettage sample different sites.
Which primary procedure is reported with 58110?
Report it with the appropriate primary colposcopy procedure. The add-on is paid within that primary procedure's global period.
What documentation supports 58110?
Document the colposcopy and the separate endometrial sampling, including the indication, sampling method, and uterine lining specimen.
Can 58110 be reported for a stand-alone endometrial biopsy?
No. This is an add-on for endometrial sampling performed with colposcopy; 58100 is the relevant code for sampling without colposcopy.
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.
