What does code 86161 cost?

Across the published hospital price files, the disclosed cash price for 86161 ranges from $6.58 to $378. This is public hospital price transparency data, not a guaranteed estimate of your bill.

Will this be my final bill?

Actual patient responsibility may vary based on your insurance plan, deductible, coinsurance, network status, diagnosis, setting, bundled services, clinical circumstances, and hospital billing practices.

86161 is the billing code hospitals use to identify "HC COMPLEMENT FUNCTIONAL ACTIVITY EA" on their published price files. We use it to line up the same service across different hospitals.

Why do prices for this code differ between hospitals?

Each hospital sets its own prices and negotiates separately with each insurer, so the disclosed price for the same code can vary widely from one hospital to another — and even between plans at a single hospital. Comparing the published figures is what this page is for; a difference does not by itself mean one hospital is better or worse.

What this page is not

It is not a quote, a guarantee, or medical advice. It shows what hospitals have published for this code, so you can compare and ask informed questions — your actual cost depends on your insurance, the exact services performed, and the care setting.

86161

HCPCS

HC COMPLEMENT FUNCTIONAL ACTIVITY EA

Verified from hospital fileNot a bill estimate

iDirect answer

Based on the latest published hospital price files, code 86161 (HC COMPLEMENT FUNCTIONAL ACTIVITY EA) appears at 48 hospitals with disclosed cash prices from $6.58 to $378. This is public hospital price transparency data, not a guaranteed estimate of your bill.

Published-price availability

hospitals publish a price

list this service without a published price

Cash

List

Negotiated

Allowed

A blank price (“—”) means a hospital names this service but did not publish a dollar amount — it is not a free service or a $0 price.

Compare 86161 prices

Filter by hospital, city, setting, or payer — the summary and charts update with your filters.

Based on hospital-published prices verified from each hospital’s own file. Coverage expands as data is verified.

Published cash prices for code 86161 vary by about 58× across the 45 hospitals with disclosed prices here — from $6.58 to $378. Shopping around can matter.

Hospitals

Prices shown

$6.58

Lowest cash

$378

Highest cash

code 86161 cash price69 disclosed · 45 hospitals

$6.58median ~$80.84$378

Lowest cash price by hospital

Stanford Health Care$6.58
Stanford Health Care Tri-Valley$10.05
Froedtert Community Hospital - Mequon$26.13
Froedtert Community Hospital - New Berlin$26.13
Froedtert Community Hospital - Oak Creek$26.13
Froedtert Menomonee Falls Hospital$30.80

Cash price by city

Reflects your current filters.

Cash price by city$6.58 – $91.59

Stanford · 1 hospital$6.58–$91.59
Pleasanton · 1 hospital$10.05
Mequon · 1 hospital$26.13
New Berlin · 1 hospital$26.13
Oak Creek · 1 hospital$26.13
Menomonee Falls · 1 hospital$30.80

76 prices shown.

Service	Hospital	Code	List price	Cash price	Negotiated range	Allowed (median)
HC COMPLEMENT FUNCTIONAL ACTIVITY EA Inpatient & outpatient	Endeavor Health Edward Hospital	86161 HCPCS	$163	$163	—	—
Complement/function activity Outpatient	Endeavor Health Edward Hospital	86161 HCPCS	—	—	$12.00 – $20.33	—
Hc C2 Function Inpatient & outpatient	University of Chicago Medical Center	86161 HCPCS	—	—	—	—
Hc C1 Esterase Inhib Activity Inpatient & outpatient	University of Chicago Medical Center	86161 HCPCS	—	—	—	—
Hc Complement; Functional Activity, Each Component Inpatient & outpatient	University of Chicago Medical Center	86161 HCPCS	—	—	—	—
Complement/function activity Outpatient	University of Chicago Medical Center	86161 HCPCS	—	—	—	—
COMPLEMENT ACTIVITIY, C1 Outpatient	Advocate Illinois Masonic Medical Center	86161 CPT	$280	$140	$12.00 – $228	—
COMPLEMENT ACTIVITIY, C1Q Outpatient	Advocate Illinois Masonic Medical Center	86161 CPT	$540	$270	$12.00 – $440	—
HB R C6 COMPLEMENT AG Inpatient & outpatient	Endeavor Health Swedish Hospital	86161 HCPCS	$107	$107	—	—
COMPLEMENT ACTIVITIY, C1 Inpatient	Advocate Lutheran General Hospital	86161 CPT	$280	$140	$122 – $224	—
COMPLEMENT ACTIVITIY, C1Q Inpatient	Advocate Lutheran General Hospital	86161 CPT	$540	$270	$236 – $432	—
COMPLEMENT ACTIVITIY, C1Q Outpatient	Advocate Condell Medical Center	86161 CPT	$540	$270	$12.00 – $432	—
COMPLEMENT ACTIVITIY, C1 Outpatient	Advocate Condell Medical Center	86161 CPT	$280	$140	$12.00 – $224	—
COMPLEMENT ACTIVITIY, C1Q Outpatient	Advocate Good Samaritan Hospital	86161 CPT	$540	$270	$12.00 – $432	—
COMPLEMENT ACTIVITIY, C1Q Outpatient	Advocate South Suburban Hospital	86161 CPT	$540	$270	$12.00 – $526	—
COMPLEMENT ACTIVITIY, C1 Outpatient	Advocate South Suburban Hospital	86161 CPT	$280	$140	$12.00 – $273	—
HC HEMOLYTIC ASSAY, COMPLEMENT; FUNCTIONAL ACTIVITY, EACH COMPONENT Outpatient	Froedtert Hospital	86161 CPT	$688	$378	$11.66 – $595	—
HC CH50 LEVEL C3 GLOMERULOPATHY PNL, COMPLEMENT, FUNCT ACTV, EA COMPONENT Outpatient	Froedtert Hospital	86161 CPT	$294	$162	$11.66 – $254	—
HC COMPLEMENT FUNCT ACTIVITY C1 ESTERASE INHIBITOR Outpatient	Froedtert Menomonee Falls Hospital	86161 CPT	$56.00	$30.80	$12.00 – $60.00	—
COMPLEMENT ACTIVITIY, C1 Inpatient	Aurora BayCare Medical Center	86161 CPT	$160	$80.00	$96.00 – $136	—
COMPLEMENT ACTIVITIY, C1 Inpatient	Aurora Medical Center Burlington	86161 CPT	$160	$80.00	$96.00 – $136	—
COMPLEMENT ACTIVITIY, C1Q Inpatient	Aurora Medical Center Burlington	86161 CPT	$540	$270	$324 – $459	—
C2 Complement, Functional, with Reflex, Serum Inpatient	Munson Healthcare Charlevoix Hospital	86161 CPT	$308	$261	$246 – $308	—
Mannan Binding Lectin Complement Pathway, Functional, Serum Inpatient	Munson Healthcare Charlevoix Hospital	86161 CPT	$229	$195	$183 – $229	—
C2 Complement, Functional, with Reflex, Serum Inpatient	Munson Healthcare Manistee Hospital	86161 CPT	$308	$261	$154 – $852	—

How to read these prices

Cash price: The discounted self-pay price for paying directly, without insurance.
List price: The hospital’s full undiscounted charge — rarely what anyone pays.
Negotiated rate: A rate for a specific insurer and plan; your share depends on your benefits.
Allowed amount: A historical reference for what was actually allowed, where disclosed.

Hospitals that publish 86161 prices

Open a hospital to see this code in the context of its full published prices.

Endeavor Health Edward Hospital University of Chicago Medical Center Advocate Illinois Masonic Medical Center Endeavor Health Swedish Hospital Advocate Lutheran General Hospital Advocate Condell Medical Center Advocate Good Samaritan Hospital Advocate South Suburban Hospital Froedtert Hospital Froedtert Menomonee Falls Hospital Aurora BayCare Medical Center Aurora Medical Center Burlington Munson Healthcare Charlevoix Hospital Munson Healthcare Manistee Hospital Aurora Medical Center Bay Area Aurora Medical Center Fond du Lac Aurora Medical Center Kenosha Aurora Lakeland Medical Center Froedtert West Bend Hospital Froedtert Holy Family Memorial Hospital Froedtert Community Hospital - Mequon Froedtert Community Hospital - New Berlin Froedtert Community Hospital - Oak Creek Kalkaska Memorial Health Center Paul Oliver Memorial Hospital Munson Healthcare Grayling Munson Healthcare Cadillac Munson Medical Center Deaconess Gibson Hospital Deaconess Union County Hospital The Women's Hospital Providence Alaska Medical Center Providence Kodiak Island Medical Center Stanford Health Care Stanford Health Care Tri-Valley Providence Seward Hospital Providence Valdez Medical Center Petaluma Valley Hospital Queen of The Valley Medical Center Redwood Memorial Hospital Providence St Joseph Hospital Eureka Santa Rosa Memorial Hospital Texas Health Center for Diagnostics and Surgery Plano Providence Mission Hospital - Mission Viejo Providence St Joseph Hospital Orange St Jude Medical Center St Mary Medical Center Providence St Joseph Medical Center

Code 86161: frequently asked

What does code 86161 cost?: Across the published hospital price files, the disclosed cash price for 86161 ranges from $6.58 to $378. This is public hospital price transparency data, not a guaranteed estimate of your bill.
Will this be my final bill?: Actual patient responsibility may vary based on your insurance plan, deductible, coinsurance, network status, diagnosis, setting, bundled services, clinical circumstances, and hospital billing practices.
What is code 86161?: 86161 is the billing code hospitals use to identify "HC COMPLEMENT FUNCTIONAL ACTIVITY EA" on their published price files. We use it to line up the same service across different hospitals.
Why do prices for this code differ between hospitals?: Each hospital sets its own prices and negotiates separately with each insurer, so the disclosed price for the same code can vary widely from one hospital to another — and even between plans at a single hospital. Comparing the published figures is what this page is for; a difference does not by itself mean one hospital is better or worse.
What this page is not: It is not a quote, a guarantee, or medical advice. It shows what hospitals have published for this code, so you can compare and ask informed questions — your actual cost depends on your insurance, the exact services performed, and the care setting.

All CPT / HCPCS codes Browse hospitals How to read this data