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Darkfield Microscope Exam for Spirochetes

Idaho 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?

$19.05

Typical negotiated rate. In Idaho, October 2026.

Insurers have agreed to pay about $19.05 for this service. The price depends on where it is billed: about $13.49 from a physician practice, and about $22.39 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 8 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$13.49$10.72 to $21.38
FacilityA hospital or hospital-owned outpatient department$22.39$16.98 to $40.74

How much rates vary

Facilitymedian $22 · 10th to 90th $11 to $58Professionalmedian $13 · 10th to 90th $7 to $22
$5$10$20$50facility $22professional $13

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
$20.42
Median
$20.42
Typical High
$20.42
Aetna
Setting
Professional
Modifier
None
Typical Low
$10.72
Median
$21.88
Typical High
$21.88
BCBS Idaho
Setting
Facility
Modifier
None
Typical Low
$14.13
Median
$33.11
Typical High
$63.10
BCBS Idaho
Setting
Professional
Modifier
None
Typical Low
$9.55
Median
$15.14
Typical High
$16.60
Cigna
Setting
Facility
Modifier
None
Typical Low
$8.91
Median
$23.44
Typical High
$43.65
Cigna
Setting
Professional
Modifier
None
Typical Low
$7.08
Median
$8.32
Typical High
$16.60
Moda Health
Setting
Facility
Modifier
None
Typical Low
$11.22
Median
$14.79
Typical High
$21.88
Moda Health
Setting
Professional
Modifier
None
Typical Low
$11.22
Median
$13.49
Typical High
$21.88
MountainHealth Co-op
Setting
Facility
Modifier
None
Typical Low
$11.22
Median
$16.98
Typical High
$21.38
MountainHealth Co-op
Setting
Professional
Modifier
None
Typical Low
$11.22
Median
$19.05
Typical High
$21.38
Regence BlueShield
Setting
Facility
Modifier
None
Typical Low
$16.98
Median
$26.92
Typical High
$40.74
Regence BlueShield
Setting
Professional
Modifier
None
Typical Low
$9.12
Median
$9.55
Typical High
$9.55
Select Health
Setting
Facility
Modifier
None
Typical Low
$11.22
Median
$11.22
Typical High
$52.48
Select Health
Setting
Professional
Modifier
None
Typical Low
$11.22
Median
$11.22
Typical High
$16.22
United
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.76
Typical High
$24.55

Where Idaho 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.

Idaho· 3rd of 51

$19.05

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.