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Darkfield Microscope Exam for Spirochetes

Delaware 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 Delaware, October 2026.

Insurers have agreed to pay about $9.33 for this service. Most negotiated rates run $6.92 to $15.85.

Few insurers publish rates for this combination, so treat this figure as a rough guide.

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 3 insurance carriers under federal price transparency rules.

How much rates vary

Facilitymedian $9 · 10th to 90th $7 to $17Professionalmedian $9 · 10th to 90th $6 to $21
$5$10$20$50facility $9professional $9

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
$8.91
Median
$9.33
Typical High
$9.33
Cigna
Setting
Facility
Modifier
None
Typical Low
$7.41
Median
$7.41
Typical High
$16.60
Cigna
Setting
Professional
Modifier
None
Typical Low
$6.92
Median
$13.18
Typical High
$75.86
United
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.76
Typical High
$15.85

Where Delaware 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.

Delaware· 39th 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.