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Gel Diffusion Test For A Specific Substance

North Dakota rates for HCPCS 86331

A laboratory test in which the sample and a matching testing solution are placed in separate wells cut into a gel and left to spread slowly toward each other. If the substance being looked for is present, a visible line forms in the gel where the two meet. The result is a present or absent answer, reported once for each substance the laboratory checks for.

Rates data updated July 2026.

How much does Gel Diffusion Test For A Specific Substance cost?

$20.42

Typical negotiated rate. In North Dakota, July 2026.

Insurers have agreed to pay about $20.42 for this service. The price depends on where it is billed: about $20.42 from a physician practice, and about $30.90 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

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 5 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$20.42$11.22 to $26.92
FacilityA hospital or hospital-owned outpatient department$30.90$11.22 to $57.54

How much rates vary

Facilitymedian $31 · 10th to 90th $8 to $58Professionalmedian $20 · 10th to 90th $8 to $32
$5$10$20$50facility $31professional $20

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
$8.32
Median
$30.90
Typical High
$57.54
Aetna
Setting
Professional
Modifier
Global
Typical Low
$8.32
Median
$11.22
Typical High
$36.31
BCBS
Setting
Professional
Modifier
Global
Typical Low
$17.38
Median
$22.91
Typical High
$26.92
Cigna
Setting
Professional
Modifier
Global
Typical Low
$13.49
Median
$13.49
Typical High
$17.38
Medica
Setting
Facility
Modifier
Global
Typical Low
$8.32
Median
$17.78
Typical High
$45.71
Medica
Setting
Professional
Modifier
Global
Typical Low
$4.07
Median
$7.08
Typical High
$20.42
United
Setting
Facility
Modifier
Global
Typical Low
$41.69
Median
$41.69
Typical High
$41.69
United
Setting
Professional
Modifier
Global
Typical Low
$4.07
Median
$12.30
Typical High
$18.20

Where North Dakota sits

The same service costs 2.6 times more in South Dakota than in Washington, DC. 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.

North Dakota· 4th of 51

$20.42

SD $22.91DC $8.91

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.