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Darkfield Microscope Exam for Spirochetes

Maine 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?

$8.13

Typical negotiated rate. In Maine, October 2026.

Insurers have agreed to pay about $8.13 for this service. Most negotiated rates run $5.62 to $13.18.

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.

How much rates vary

Facilitymedian $15 · 10th to 90th $11 to $51Professionalmedian $7 · 10th to 90th $4 to $11
$5$10$20$50facility $15professional $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
$9.12
Median
$9.12
Typical High
$9.12
Anthem BCBS
Setting
Facility
Modifier
None
Typical Low
$10.96
Median
$14.79
Typical High
$52.48
Anthem BCBS
Setting
Professional
Modifier
None
Typical Low
$4.17
Median
$5.62
Typical High
$6.76
Cigna
Setting
Facility
Modifier
None
Typical Low
$7.94
Median
$15.85
Typical High
$25.70
Cigna
Setting
Professional
Modifier
None
Typical Low
$8.13
Median
$11.48
Typical High
$16.60
Harvard Pilgrim
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.76
Typical High
$13.80
Martin's Point
Setting
Professional
Modifier
None
Typical Low
$9.12
Median
$9.12
Typical High
$9.12
United
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.76
Typical High
$13.80

Where Maine 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.

Maine· 50th of 51

$8.13

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.