go back

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 October 2026.

How much does Darkfield Microscope Exam for Spirochetes cost?

$16.22

Typical negotiated rate. In Kansas, October 2026.

Insurers have agreed to pay about $16.22 for this service. The price depends on where it is billed: about $11.22 from a physician practice, and about $16.98 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 5 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$11.22$6.76 to $15.14
FacilityA hospital or hospital-owned outpatient department$16.98$16.22 to $23.99

How much rates vary

Facilitymedian $17 · 10th to 90th $13 to $26Professionalmedian $11 · 10th to 90th $7 to $23
$5$10$20$50facility $17professional $11

Distribution of negotiated rates across all payers (price axis is log-scale). Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$11.22
Median
$20.89
Typical High
$25.70
Aetna
Setting
Professional
Modifier
None
Typical Low
$9.77
Median
$11.22
Typical High
$12.02
BCBS Kansas
Setting
Facility
Modifier
None
Typical Low
$16.22
Median
$16.98
Typical High
$25.70
BCBS Kansas
Setting
Professional
Modifier
None
Typical Low
$15.14
Median
$15.14
Typical High
$15.14
Cigna
Setting
Facility
Modifier
None
Typical Low
$7.94
Median
$14.45
Typical High
$25.70
Cigna
Setting
Professional
Modifier
None
Typical Low
$7.08
Median
$23.99
Typical High
$23.99
Medica
Setting
Facility
Modifier
None
Typical Low
$10.23
Median
$13.49
Typical High
$30.90
Medica
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.76
Typical High
$20.89
United
Setting
Facility
Modifier
None
Typical Low
$6.76
Median
$11.22
Typical High
$44.67
United
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.76
Typical High
$23.44
2 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$4.90
Median
$5.62
Typical High
$6.03
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$1.95
Median
$2.24
Typical High
$2.40

Where Kansas 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.

Kansas· 6th of 51

$16.22

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.