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Complement Component Activity Test

Maryland rates for HCPCS 86161

This blood test measures the functional activity of one specific protein within the complement system, a group of immune proteins that normally work together to fight infection and clear damaged cells. It is used to help investigate certain autoimmune diseases, recurrent infections, or unexplained inflammation. A low result can indicate that this particular protein is being used up faster than it can be replaced, or that a person was born with a shortage of it.

Rates data updated July 2026.

How much does Complement Component Activity Test cost?

$10.47

Typical negotiated rate. In Maryland, 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 $41.69 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 6 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$8.91 to $11.48
FacilityA hospital or hospital-owned outpatient department$41.69$7.94 to $63.10

How much rates vary

Facilitymedian $42 · 10th to 90th $7 to $69Professionalmedian $10 · 10th to 90th $7 to $47
$10$20$50facility $42professional $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
$6.61
Median
$51.29
Typical High
$69.18
Aetna
Setting
Professional
Modifier
Global
Typical Low
$7.94
Median
$10.47
Typical High
$46.77
CareFirst
Setting
Professional
Modifier
Global
Typical Low
$3.63
Median
$9.55
Typical High
$11.75
Cigna
Setting
Facility
Modifier
Global
Typical Low
$6.31
Median
$8.32
Typical High
$15.49
Cigna
Setting
Professional
Modifier
Global
Typical Low
$6.61
Median
$12.02
Typical High
$29.51
Kaiser Permanente
Setting
Professional
Modifier
Global
Typical Low
$12.02
Median
$14.45
Typical High
$23.44
United
Setting
Facility
Modifier
Global
Typical Low
$5.01
Median
$5.25
Typical High
$9.12
United
Setting
Professional
Modifier
Global
Typical Low
$5.37
Median
$7.24
Typical High
$11.22
Wellpoint
Setting
Professional
Modifier
Global
Typical Low
$4.68
Median
$8.32
Typical High
$18.20

Where Maryland sits

The same service costs 2.9 times more in Pennsylvania than in Tennessee. 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.

Maryland· 49th of 51

$10.47

PA $27.54TN $9.55

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.