What does code 85303 cost?

Across the published hospital price files, the disclosed cash price for 85303 ranges from $10.70 to $470. 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.

85303 is the billing code hospitals use to identify "HC PROTEIN C ACTIVITY" 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.

85303

HCPCS

HC PROTEIN C ACTIVITY

Verified from hospital fileNot a bill estimate

iDirect answer

Based on the latest published hospital price files, code 85303 (HC PROTEIN C ACTIVITY) appears at 44 hospitals with disclosed cash prices from $10.70 to $470. 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 85303 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 85303 vary by about 44× across the 43 hospitals with disclosed prices here — from $10.70 to $470. Shopping around can matter.

Hospitals

Prices shown

$10.70

Lowest cash

$470

Highest cash

code 85303 cash price60 disclosed · 43 hospitals

$10.70median ~$89.73$470

Lowest cash price by hospital

Stanford Health Care Tri-Valley$10.70
Providence Seward Hospital$19.50
Munson Healthcare Charlevoix Hospital$26.64
Munson Healthcare Manistee Hospital$26.64
Kalkaska Memorial Health Center$26.64
Munson Healthcare Cadillac$26.64

Cash price by city

Reflects your current filters.

Cash price by city$10.70 – $29.75

Pleasanton · 1 hospital$10.70
Seward · 1 hospital$19.50
Charlevoix · 1 hospital$26.64–$29.75
Manistee · 1 hospital$26.64
Kalkaska · 1 hospital$26.64–$29.75
Cadillac · 1 hospital$26.64–$29.75

63 prices shown.

Service	Hospital	Code	List price	Cash price	Negotiated range	Allowed (median)
HC PROTEIN C ACTIVITY Inpatient & outpatient	Endeavor Health Edward Hospital	85303 HCPCS	$182	$182	—	—
Clot inhibit prot c activity Outpatient	Endeavor Health Edward Hospital	85303 HCPCS	—	—	$13.84 – $23.45	—
Hc Clotting Inhibitors Or Anticoagulants; Protein C; Activity Inpatient & outpatient	University of Chicago Medical Center	85303 HCPCS	—	—	—	—
Clot inhibit prot c activity Outpatient	University of Chicago Medical Center	85303 HCPCS	—	—	—	—
PROTEIN C ACTIVITY Outpatient	Advocate Illinois Masonic Medical Center	85303 CPT	$230	$115	$13.84 – $187	—
HB PROTEIN C FUNCTIONALITY* Inpatient & outpatient	Endeavor Health Swedish Hospital	85303 HCPCS	$470	$470	—	—
PROTEIN C ACTIVITY Outpatient	Advocate Condell Medical Center	85303 CPT	$230	$115	$13.84 – $184	—
PROTEIN C ACTIVITY Outpatient	Advocate Good Samaritan Hospital	85303 CPT	$230	$115	$13.84 – $184	—
PROTEIN C ACTIVITY Outpatient	Advocate South Suburban Hospital	85303 CPT	$230	$115	$13.84 – $224	—
HC CLOTTING INHIBITORS OR ANTICOAG PROTEIN C ACTIVITY Outpatient	Froedtert Hospital	85303 CPT	$64.00	$35.20	$13.46 – $69.20	—
HC BLOOD CLOT INHIBITOR TEST Outpatient	Froedtert Hospital	85303 CPT	$122	$67.10	$13.46 – $106	—
HC BLOOD CLOT INHIBITOR TEST Outpatient	Froedtert Menomonee Falls Hospital	85303 CPT	$103	$56.65	$13.84 – $92.70	—
PROTEIN C ACTIVITY Inpatient	Aurora Medical Center Burlington	85303 CPT	$335	$168	$201 – $285	—
85303 4828 Inpatient	Munson Healthcare Charlevoix Hospital	85303 CPT	$31.34	$26.64	$25.07 – $31.34	—
Protein C Activity, Plasma Inpatient	Munson Healthcare Charlevoix Hospital	85303 CPT	$35.00	$29.75	$28.00 – $35.00	—
85303 4828 Inpatient	Munson Healthcare Manistee Hospital	85303 CPT	$31.34	$26.64	$15.72 – $852	—
PROTEIN C ACTIVITY Inpatient	Aurora Medical Center Bay Area	85303 CPT	$335	$168	$201 – $283	—
PROTEIN C ACTIVITY Inpatient	Aurora Medical Center Fond du Lac	85303 CPT	$335	$168	$201 – $285	—
PROTEIN C ACTIVITY Inpatient	Aurora Medical Center Grafton	85303 CPT	$335	$168	$201 – $285	—
PROTEIN C ACTIVITY Inpatient	Aurora Medical Center Kenosha	85303 CPT	$335	$168	$201 – $285	—
PROTEIN C ACTIVITY Inpatient	Aurora Lakeland Medical Center	85303 CPT	$335	$168	$201 – $285	—
HC BLOOD CLOT INHIBITOR TEST Inpatient	Froedtert West Bend Hospital	85303 CPT	$103	$56.65	$61.80 – $97.85	—
HC CLOTTING INHIBITORS OR ANTICOAG PROTEIN C ACTIVITY Inpatient	Froedtert Holy Family Memorial Hospital	85303 CPT	$117	$64.35	$70.20 – $103	—
HC BLOOD CLOT INHIBITOR TEST Inpatient	Froedtert Holy Family Memorial Hospital	85303 CPT	$117	$64.35	$70.20 – $103	—
HC CLOTTING INHIBITORS OR ANTICOAG PROTEIN C ACTIVITY Inpatient	Froedtert Community Hospital - Mequon	85303 CPT	$52.50	$28.88	$31.50 – $46.20	—

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 85303 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 Condell Medical Center Advocate Good Samaritan Hospital Advocate South Suburban Hospital Froedtert Hospital Froedtert Menomonee Falls Hospital 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 Grafton 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 Deaconess Illinois Medical Center Providence Alaska Medical Center Providence Kodiak Island Medical Center Stanford Health Care Stanford Health Care Tri-Valley Providence Seward Hospital Providence Valdez Medical Center St Elias Specialty Hospital Providence Little Co of Mary Med Center San Pedro Texas Health Center for Diagnostics and Surgery Plano Providence Little Company of Mary Med Center Torrance Providence Saint John's Health Center Providence St Joseph Medical Center Atrium Health Lincoln

Code 85303: frequently asked

What does code 85303 cost?: Across the published hospital price files, the disclosed cash price for 85303 ranges from $10.70 to $470. 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 85303?: 85303 is the billing code hospitals use to identify "HC PROTEIN C ACTIVITY" 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

Hospitals publishing code 85303 by state

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