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Darkfield Microscope Exam for Spirochetes

Mississippi 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 $12 · 10th–90th $10$200%20%10th90th$12Professionalmedian $12 · 10th–90th $6$230%10%20%10th90th$12$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
$11.22
Median
$20.42
Typical High
$22.91
Aetna
Setting
Professional
Modifier
Global
Typical Low
$8.51
Median
$12.88
Typical High
$22.91
BCBS
Setting
Facility
Modifier
Global
Typical Low
$11.75
Median
$11.75
Typical High
$11.75
BCBS
Setting
Professional
Modifier
Global
Typical Low
$11.75
Median
$11.75
Typical High
$11.75
Cigna
Setting
Facility
Modifier
Global
Typical Low
$7.76
Median
$12.59
Typical High
$22.39
Cigna
Setting
Professional
Modifier
Global
Typical Low
$5.25
Median
$12.02
Typical High
$22.39
United
Setting
Facility
Modifier
Global
Typical Low
$10.23
Median
$11.22
Typical High
$15.49
United
Setting
Professional
Modifier
Global
Typical Low
$2.95
Median
$4.79
Typical High
$13.18