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Darkfield Microscope Exam for Spirochetes

West Virginia 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 October 2026.

How much does Darkfield Microscope Exam for Spirochetes cost?

$9.33

Typical negotiated rate. In West Virginia, October 2026.

Insurers have agreed to pay about $9.33 for this service. The price depends on where it is billed: about $7.94 from a physician practice, and about $16.60 from a hospital or other facility.

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.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$7.94$6.46 to $21.88
FacilityA hospital or hospital-owned outpatient department$16.60$10.96 to $27.54

How much rates vary

Facilitymedian $17 · 10th to 90th $9 to $34Professionalmedian $8 · 10th to 90th $5 to $31
$2$5$10$20$50facility $17professional $8

Distribution of negotiated rates across all payers (price axis is log-scale). 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
None
Typical Low
$9.33
Median
$9.33
Typical High
$9.33
Aetna
Setting
Professional
Modifier
None
Typical Low
$9.12
Median
$9.33
Typical High
$9.33
CareSource
Setting
Facility
Modifier
None
Typical Low
$15.14
Median
$15.14
Typical High
$15.14
CareSource
Setting
Professional
Modifier
None
Typical Low
$13.49
Median
$13.49
Typical High
$13.49
Cigna
Setting
Facility
Modifier
None
Typical Low
$10.96
Median
$21.88
Typical High
$33.88
Cigna
Setting
Professional
Modifier
None
Typical Low
$5.25
Median
$19.95
Typical High
$75.86
United
Setting
Facility
Modifier
None
Typical Low
$6.76
Median
$6.76
Typical High
$6.76
United
Setting
Professional
Modifier
None
Typical Low
$5.13
Median
$6.92
Typical High
$30.90

Where West Virginia sits

The same service costs 3.5 times more in Alaska than in Kentucky. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

West Virginia· 38th of 51

$9.33

AK $25.70KY $7.24

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.