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Darkfield Microscope Exam for Spirochetes

New Hampshire 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?

$12.88

Typical negotiated rate. In New Hampshire, October 2026.

Insurers have agreed to pay about $12.88 for this service. The price depends on where it is billed: about $7.41 from a physician practice, and about $36.31 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 6 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$7.41$6.76 to $16.98
FacilityA hospital or hospital-owned outpatient department$36.31$21.38 to $50.12

How much rates vary

Facilitymedian $36 · 10th to 90th $19 to $66Professionalmedian $7 · 10th to 90th $6 to $26
$5$10$20$50$100facility $36professional $7

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
Professional
Modifier
None
Typical Low
$11.22
Median
$12.88
Typical High
$25.70
Anthem BCBS
Setting
Facility
Modifier
None
Typical Low
$19.50
Median
$36.31
Typical High
$60.26
Anthem BCBS
Setting
Professional
Modifier
None
Typical Low
$5.62
Median
$7.41
Typical High
$22.39
Cigna
Setting
Facility
Modifier
None
Typical Low
$20.89
Median
$50.12
Typical High
$79.43
Cigna
Setting
Professional
Modifier
None
Typical Low
$5.75
Median
$11.75
Typical High
$47.86
Harvard Pilgrim
Setting
Professional
Modifier
None
Typical Low
$6.76
Median
$16.98
Typical High
$41.69
United
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.76
Typical High
$16.60
Well Sense
Setting
Facility
Modifier
None
Typical Low
$6.03
Median
$6.03
Typical High
$6.03

Where New Hampshire 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.

New Hampshire· 18th of 51

$12.88

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.