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Darkfield Microscope Exam for Spirochetes

New Jersey 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?

$13.49

Typical negotiated rate. In New Jersey, July 2026.

Insurers have agreed to pay about $13.49 for this service. The price depends on where it is billed: about $9.55 from a physician practice, and about $25.12 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 5 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$9.55$8.71 to $13.18
FacilityA hospital or hospital-owned outpatient department$25.12$16.98 to $67.61

How much rates vary

Facilitymedian $25 · 10th to 90th $11 to $155Professionalmedian $10 · 10th to 90th $8 to $32
$10$100$1K$10Kfacility $25professional $10

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. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$14.45
Median
$25.70
Typical High
$81.28
Aetna
Setting
Professional
Modifier
Global
Typical Low
$8.32
Median
$9.55
Typical High
$32.36
Cigna
Setting
Facility
Modifier
Global
Typical Low
$12.88
Median
$25.12
Typical High
$51.29
Cigna
Setting
Professional
Modifier
Global
Typical Low
$6.76
Median
$10.96
Typical High
$31.62
Emblem Health
Setting
Professional
Modifier
Global
Typical Low
$4.47
Median
$5.62
Typical High
$12.88
Horizon BCBS
Setting
Facility
Modifier
Global
Typical Low
$11.22
Median
$10,471.29
Typical High
$23,988.33
Horizon BCBS
Setting
Professional
Modifier
Global
Typical Low
$6.76
Median
$10.00
Typical High
$12.59
United
Setting
Facility
Modifier
Global
Typical Low
$5.37
Median
$11.22
Typical High
$23.44
United
Setting
Professional
Modifier
Global
Typical Low
$4.47
Median
$6.76
Typical High
$16.22

Where New Jersey sits

The same service costs 2.4 times more in Hawaii than in Washington, DC. 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 Jersey· 12th of 51

$13.49

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.