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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.

Facilitymedian $11 · 10th–90th $9$130%10%20%10th90th$11Professionalmedian $21 · 10th–90th $13$280%10%10th90th$21$5.0$10.0$20.0

Distribution of negotiated rates across all payers (price axis is log-scale). Facility and professional rates are different services and are charted separately. Need provider-level prices? Contact us.

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