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Darkfield Microscope Exam for Spirochetes

Ohio 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?

$9.12

Typical negotiated rate. In Ohio, October 2026.

Insurers have agreed to pay about $9.12 for this service. The price depends on where it is billed: about $7.08 from a physician practice, and about $14.45 from a hospital or other facility.

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 8 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$7.08$5.62 to $10.47
FacilityA hospital or hospital-owned outpatient department$14.45$11.48 to $19.95

How much rates vary

Facilitymedian $14 · 10th to 90th $9 to $37Professionalmedian $7 · 10th to 90th $6 to $17
$5$10$20$50facility $14professional $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
Facility
Modifier
None
Typical Low
$10.72
Median
$25.12
Typical High
$45.71
Aetna
Setting
Facility
Modifier
52 · Reduced service
Typical Low
$5.37
Median
$12.30
Typical High
$22.91
Aetna
Setting
Facility
Modifier
53 · Discontinued
Typical Low
$2.14
Median
$5.01
Typical High
$9.12
Aetna
Setting
Professional
Modifier
None
Typical Low
$9.12
Median
$11.22
Typical High
$79.43
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$4.47
Median
$5.37
Typical High
$41.69
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$1.82
Median
$2.14
Typical High
$16.60
Anthem BCBS
Setting
Facility
Modifier
None
Typical Low
$9.12
Median
$13.18
Typical High
$20.89
Anthem BCBS
Setting
Professional
Modifier
None
Typical Low
$5.62
Median
$6.03
Typical High
$14.13
CareSource
Setting
Facility
Modifier
None
Typical Low
$8.71
Median
$8.71
Typical High
$12.88
CareSource
Setting
Professional
Modifier
None
Typical Low
$15.14
Median
$15.14
Typical High
$15.14
Cigna
Setting
Facility
Modifier
None
Typical Low
$7.41
Median
$13.18
Typical High
$45.71
Cigna
Setting
Professional
Modifier
None
Typical Low
$5.75
Median
$7.24
Typical High
$16.60
Medical Mutual of Ohio
Setting
Facility
Modifier
None
Typical Low
$7.41
Median
$13.18
Typical High
$45.71
Medical Mutual of Ohio
Setting
Professional
Modifier
None
Typical Low
$5.75
Median
$7.24
Typical High
$15.85
Molina
Setting
Professional
Modifier
None
Typical Low
$6.17
Median
$7.76
Typical High
$13.49
SummaCare
Setting
Professional
Modifier
None
Typical Low
$7.41
Median
$9.55
Typical High
$13.49
United
Setting
Facility
Modifier
None
Typical Low
$4.07
Median
$11.22
Typical High
$44.67
United
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.92
Typical High
$16.22

Where Ohio 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.

Ohio· 41st of 51

$9.12

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.