Surgery and procedures CPT 58100 Outpatient

Endometrial biopsy cost in San Francisco, CA

In San Francisco-Oakland-Fremont, CA, 10 hospitals list a cash price for endometrial biopsy (uterine lining sample) without dilating the cervix: from $452.80 to $548.80, with a median of $548.80. The lowest listed price is at Stanford Health Care Tri-Valley — $96.00 less than the median here. Across California, the median is $546.00 at 73 hospitals.

Cash prices at 10 facilities across 10 cities for code 58100, as an outpatient — the setting a self-pay patient normally buys. Collected Sep 23, 2026; the hospital files themselves were last updated between Apr 1, 2026 and Apr 1, 2026.

Lowest$452.80Stanford Health Care Tri-Valley
Median$548.80half pay less
Highest$548.80in this market
Difference1.2×highest vs lowest

Where each hospital's price falls

Each dot is one hospital's cash price on a scale from the lowest to the highest in San Francisco-Oakland-Fremont, CA.

median
Lowest $452.80Highest $548.80

Hospitals, cheapest first

HospitalCash price List priceInsurers payOff listFile date
Stanford Health Care Tri-Valley lowest Pleasanton, CA · (925) 847-3000 Biopsy of Uterus Lining $452.80 $1,132.00 — 60% Apr 1, 2026
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Kaiser Foundation Hospital - San Francisco San Francisco, CA · (415) 833-2646 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Kaiser Foundation Hospital - Oakland/Richmond Oakland, CA · (510) 752-1000 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Kaiser Foundation Hospital - Walnut Creek Walnut Creek, CA · (925) 295-4000 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Kaiser Foundation Hospital - Fremont Fremont, CA · (510) 784-4000 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Kaiser Foundation Hospital - Redwood City Redwood City, CA · (650) 299-2000 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Kaiser Foundation Hospital - San Rafael San Rafael, CA · (415) 444-2000 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Kaiser Foundation Hospital - Antioch Antioch, CA · (925) 813-6500 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Kaiser Foundation Hospital - San Leandro San Leandro, CA · (510) 454-1000 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Kaiser Foundation Hospital - South San Francisco South San Francisco, CA · (650) 742-3200 ENDOMETRIAL BX W/WO ENDOCERVIX BX W/O DILAT SPX $548.80 $980.00 $243.00–$761.00 44% —
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Outpatient: lowest $452.80, median $548.80, highest $548.80 — a 1.2× difference within the same market.

As an inpatient, the same code is billed by 10 facilities here, median $548.80. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.

Cash or insurance?

At 9 of 9 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at none is it below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.

What it is

An endometrial biopsy takes a small sample of the uterine lining with a thin tube passed through the cervix, without stretching the cervix open. It is used to investigate abnormal bleeding, such as bleeding after menopause.

What the price covers

The price covers taking the sample. The pathologist's exam and the office visit are usually billed separately.