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Darkfield Microscope Exam for Spirochetes

Wyoming 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?

$18.20

Typical negotiated rate. In Wyoming, July 2026.

Insurers have agreed to pay about $18.20 for this service. The price depends on where it is billed: about $15.85 from a physician practice, and about $19.50 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 4 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$15.85$14.13 to $36.31
FacilityA hospital or hospital-owned outpatient department$19.50$13.80 to $23.44

How much rates vary

Facilitymedian $19 · 10th to 90th $11 to $23Professionalmedian $16 · 10th to 90th $11 to $36
$5.0$10.0$20.0facility $19professional $16

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. Small sample; interpret with caution. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$11.22
Median
$11.22
Typical High
$11.22
Aetna
Setting
Professional
Modifier
Global
Typical Low
$11.22
Median
$11.22
Typical High
$11.22
BCBS
Setting
Facility
Modifier
Global
Typical Low
$19.50
Median
$19.50
Typical High
$23.44
BCBS
Setting
Professional
Modifier
Global
Typical Low
$14.13
Median
$18.20
Typical High
$36.31
Cigna
Setting
Facility
Modifier
Global
Typical Low
$22.39
Median
$22.39
Typical High
$22.39
Cigna
Setting
Professional
Modifier
Global
Typical Low
$6.92
Median
$7.76
Typical High
$18.62
United
Setting
Facility
Modifier
Global
Typical Low
$13.80
Median
$13.80
Typical High
$13.80
United
Setting
Professional
Modifier
Global
Typical Low
$4.79
Median
$6.76
Typical High
$15.85

Where Wyoming 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.

Wyoming $18.20 · 4th 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.