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Darkfield Microscope Exam for Spirochetes

Hawaii 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?

$20.42

Typical negotiated rate. In Hawaii, July 2026.

Insurers have agreed to pay about $20.42 for this service. Most negotiated rates run $14.13 to $25.70.

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 $11 · 10th to 90th $9 to $13Professionalmedian $21 · 10th to 90th $13 to $28
$5.0$10.0$20.0facility $11professional $21

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
$9.33
Median
$11.22
Typical High
$13.49
Cigna
Setting
Professional
Modifier
Global
Typical Low
$9.12
Median
$9.12
Typical High
$13.49
HMSA
Setting
Professional
Modifier
Global
Typical Low
$19.50
Median
$25.12
Typical High
$27.54
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$11.22
Median
$13.49
Typical High
$21.88
United
Setting
Professional
Modifier
Global
Typical Low
$4.79
Median
$15.85
Typical High
$21.88
University Health Alliance
Setting
Professional
Modifier
Global
Typical Low
$12.59
Median
$20.42
Typical High
$29.51

Where Hawaii sits

The same service costs 2.4 times more in Hawaii than in Washington, DC. Every bar is a state, most expensive first. Pick one to see its carriers and full range.

Hawaii $20.42 · 1st of 51
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.