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Darkfield Microscope Exam for Spirochetes

Kansas rates for HCPCS 87166

Examination of fluid or scrapings under a microscope arranged so that light strikes the sample from the side, making extremely thin corkscrew-shaped bacteria stand out bright against a dark background. It is used mainly to look for the organism that causes syphilis in fluid taken from a sore, and it can give an answer straight away.

Rates data updated July 2026.

How much does Darkfield Microscope Exam for Spirochetes cost?

$12.02

Typical negotiated rate. In Kansas, July 2026.

Insurers have agreed to pay about $12.02 for this service. The price depends on where it is billed: about $9.77 from a physician practice, and about $22.91 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 5 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$9.77$9.55 to $11.22
FacilityA hospital or hospital-owned outpatient department$22.91$13.80 to $25.70

How much rates vary

Facilitymedian $23 · 10th to 90th $11 to $26Professionalmedian $10 · 10th to 90th $7 to $15
$5.0$10.0$20.0$50.0$100.0facility $23professional $10

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$12.02
Median
$24.55
Typical High
$26.92
Aetna
Setting
Professional
Modifier
Global
Typical Low
$7.94
Median
$9.77
Typical High
$11.22
BCBS
Setting
Facility
Modifier
Global
Typical Low
$16.22
Median
$23.99
Typical High
$25.70
BCBS
Setting
Professional
Modifier
Global
Typical Low
$15.14
Median
$15.14
Typical High
$15.14
Cigna
Setting
Facility
Modifier
Global
Typical Low
$7.41
Median
$18.20
Typical High
$25.70
Cigna
Setting
Professional
Modifier
Global
Typical Low
$5.37
Median
$13.18
Typical High
$26.30
Medica
Setting
Facility
Modifier
Global
Typical Low
$9.77
Median
$12.30
Typical High
$22.91
Medica
Setting
Professional
Modifier
Global
Typical Low
$4.79
Median
$9.12
Typical High
$18.20
United
Setting
Facility
Modifier
Global
Typical Low
$6.76
Median
$11.22
Typical High
$15.85
United
Setting
Professional
Modifier
Global
Typical Low
$4.79
Median
$9.12
Typical High
$19.95

Where Kansas sits

The same service costs 2.4 times more in Hawaii than in Washington, DC. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

Kansas $12.02 · 23rd of 51
HI $20.42DC $8.51

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.