$100.58–$122.16
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 Endometrial biopsy Medicare reimbursement rates in California
Reports endometrial tissue sampling performed during a colposcopy when the uterine lining is evaluated separately from cervical or vaginal tissue. Compare 58110 office and facility rates across CMS payment localities in California.
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.
What does Medicare pay for 58110 in California?
California has 29 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 29 payment areas shown below, using the same CMS release.
Office / nonfacility
$51.41–$61.14
29 of 29 localities have a supported rate.
Lowest: Chico
Highest: San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
A spread of $9.73 per service.
Facility setting
$34.21–$38.50
29 of 29 localities have a supported rate.
Lowest: Chico
Highest: San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
A spread of $4.29 per service.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Where 58110 pays more and less in California
29 payment localities
$51.41 to $61.14
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 California, from the same CMS release.
$168.47–$202.10
57454 covers colposcopy with cervical biopsy and endocervical curettage. It does not represent a separate sample from the uterine lining.
$154.18–$187.27
57456 covers colposcopy with endocervical curettage. 58110 represents endometrial sampling, a distinct specimen site.
Compare 58110 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
29 of 29 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Bakersfield | Office $51.80 | Facility $34.60 |
| Chico | Office $51.41 | Facility $34.21 |
| El Centro | Office $51.44 | Facility $34.23 |
| Fresno | Office $51.41 | Facility $34.21 |
| Hanford-Corcoran | Office $51.41 | Facility $34.21 |
| Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty) | Office $54.47 | Facility $35.90 |
| Madera | Office $51.41 | Facility $34.21 |
| Merced | Office $51.41 | Facility $34.21 |
| Modesto | Office $51.41 | Facility $34.21 |
| Napa | Office $57.18 | Facility $36.49 |
| Oxnard-Thousand Oaks-Ventura | Office $53.93 | Facility $35.38 |
| Redding | Office $51.41 | Facility $34.21 |
| Rest Of California | Office $51.41 | Facility $34.21 |
| Riverside-San Bernardino-Ontario | Office $52.92 | Facility $35.71 |
| Sacramento-Roseville-Folsom | Office $53.32 | Facility $35.06 |
| Salinas | Office $53.11 | Facility $34.91 |
| San Diego-Chula Vista-Carlsbad | Office $53.90 | Facility $35.13 |
| San Francisco-Oakland-Berkeley (Marin Cnty) | Office $59.72 | Facility $37.58 |
| San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty) | Office $59.56 | Facility $37.42 |
| San Jose-Sunnyvale-Santa Clara (San Benito Cnty) | Office $61.14 | Facility $38.50 |
| San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty) | Office $60.49 | Facility $37.85 |
| San Luis Obispo-Paso Robles | Office $52.33 | Facility $34.45 |
| Santa Cruz-Watsonville | Office $54.06 | Facility $34.98 |
| Santa Maria-Santa Barbara | Office $53.18 | Facility $34.88 |
| Santa Rosa-Petaluma | Office $54.56 | Facility $35.28 |
| Stockton | Office $51.41 | Facility $34.21 |
| Vallejo | Office $56.95 | Facility $36.26 |
| Visalia | Office $51.41 | Facility $34.21 |
| Yuba City | Office $51.41 | Facility $34.21 |
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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.
6,51457720,,Revision of cervix,A,,4.49,3.68,NA,3.68,,0.79,8.96,8.96,0,090,0.12,0.74,0.14,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,51557800,,Dilation of cervical canal,A,,0.75,1.33,,0.41,,0.14,2.22,1.30,0,000,0.00,0.00,0.00,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,51658100,,Biopsy of uterus lining,A,,1.18,1.55,,0.26,,0.21,2.94,1.65,0,000,0.00,0.00,0.00,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,51758110,,Bx done w/colposcopy add-on,A,,0.75,0.64,,0.17,,0.14,1.53,1.06,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,51858120,,Dilation and curettage,A,,3.50,4.78,,2.13,,0.65,8.93,6.28,0,010,0.10,0.80,0.10,2,0,1,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,51958140,,Myomectomy abdom method,A,,15.40,6.24,NA,6.24,,2.70,24.34,24.34,0,090,0.12,0.74,0.14,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
6,52058145,,Myomectomy vag method,A,,8.69,4.74,NA,4.74,,1.51,14.94,14.94,0,090,0.12,0.74,0.14,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00