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Immunodiffusion Test

Washington, DC rates for HCPCS 86329

A laboratory method in which a sample and a matching reagent spread toward each other through a soft gel and form a visible line where they meet, showing that a specific antibody or protein is present. It is reported for substances that do not have a standard named test of their own. It gives a present-or-absent style answer rather than a precise measured amount.

Rates data updated July 2026.

How much does Immunodiffusion Test cost?

$10.47

Typical negotiated rate. In Washington, DC, July 2026.

Insurers have agreed to pay about $10.47 for this service. The price depends on where it is billed: about $10.47 from a physician practice, and about $23.99 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$10.47$10.47 to $10.47
FacilityA hospital or hospital-owned outpatient department$23.99$10.47 to $44.67

How much rates vary

Facilitymedian $24 · 10th to 90th $10 to $74Professionalmedian $10 · 10th to 90th $10 to $37
$10$20$50$100facility $24professional $10

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
$10.47
Median
$38.90
Typical High
$74.13
Aetna
Setting
Professional
Modifier
Global
Typical Low
$10.47
Median
$10.47
Typical High
$10.47
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$30.20
Median
$53.70
Typical High
$154.88
Cigna
Setting
Facility
Modifier
Global
Typical Low
$22.91
Median
$23.99
Typical High
$53.70
Cigna
Setting
Professional
Modifier
Global
Typical Low
$7.59
Median
$16.22
Typical High
$109.65
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$27.54
Median
$27.54
Typical High
$28.84
United
Setting
Facility
Modifier
Global
Typical Low
$8.32
Median
$16.98
Typical High
$43.65
United
Setting
Professional
Modifier
Global
Typical Low
$5.89
Median
$8.51
Typical High
$18.20

Where Washington, DC 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.

Washington, DC· 51st of 51

$10.47

SD $26.92DC $10.47

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.