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Darkfield Microscope Exam for Spirochetes

Oregon 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?

$13.49

Typical negotiated rate. In Oregon, October 2026.

Insurers have agreed to pay about $13.49 for this service. The price depends on where it is billed: about $12.30 from a physician practice, and about $18.20 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$12.30$10.96 to $15.49
FacilityA hospital or hospital-owned outpatient department$18.20$11.22 to $25.12

How much rates vary

Facilitymedian $18 · 10th to 90th $11 to $40Professionalmedian $12 · 10th to 90th $5 to $25
$5$10$20$50facility $18professional $12

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
$28.18
Median
$28.18
Typical High
$50.12
Aetna
Setting
Professional
Modifier
None
Typical Low
$10.96
Median
$10.96
Typical High
$13.80
Cigna
Setting
Facility
Modifier
None
Typical Low
$18.20
Median
$30.90
Typical High
$45.71
Cigna
Setting
Professional
Modifier
None
Typical Low
$8.71
Median
$12.88
Typical High
$20.42
Kaiser Permanente
Setting
Professional
Modifier
None
Typical Low
$23.44
Median
$28.84
Typical High
$33.11
Moda Health
Setting
Facility
Modifier
None
Typical Low
$10.96
Median
$11.22
Typical High
$37.15
Moda Health
Setting
Professional
Modifier
None
Typical Low
$10.96
Median
$11.22
Typical High
$22.91
Pacific Source
Setting
Facility
Modifier
None
Typical Low
$11.22
Median
$14.45
Typical High
$22.91
Providence
Setting
Facility
Modifier
None
Typical Low
$11.22
Median
$17.38
Typical High
$45.71
Providence
Setting
Professional
Modifier
None
Typical Low
$11.22
Median
$13.49
Typical High
$79.43
Regence BlueShield
Setting
Facility
Modifier
None
Typical Low
$22.39
Median
$39.81
Typical High
$50.12
Regence BlueShield
Setting
Professional
Modifier
None
Typical Low
$8.51
Median
$9.55
Typical High
$14.45
United
Setting
Facility
Modifier
None
Typical Low
$13.49
Median
$16.98
Typical High
$18.20
United
Setting
Professional
Modifier
None
Typical Low
$4.79
Median
$6.46
Typical High
$13.49

Where Oregon 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.

Oregon· 11th of 51

$13.49

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.