What does code 85306 cost?

Across the published hospital price files, the disclosed cash price for 85306 ranges from $15.24 to $541. 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.

85306 is the billing code hospitals use to identify "HC PROTEIN S FREE" 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.

85306

HCPCS

HC PROTEIN S FREE

Verified from hospital fileNot a bill estimate

iDirect answer

Based on the latest published hospital price files, code 85306 (HC PROTEIN S FREE) appears at 61 hospitals with disclosed cash prices from $15.24 to $541. 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

105

Cash

105

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 85306 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 85306 vary by about 36× across the 60 hospitals with disclosed prices here — from $15.24 to $541. Shopping around can matter.

Hospitals

110

Prices shown

$15.24

Lowest cash

$541

Highest cash

code 85306 cash price105 disclosed · 60 hospitals

$15.24median ~$89.70$541

Lowest cash price by hospital

Stanford Health Care Tri-Valley$15.24
Providence Seward Hospital$19.50
Froedtert Holy Family Memorial Hospital$19.80
Munson Healthcare Charlevoix Hospital$21.38
Munson Healthcare Manistee Hospital$21.38
Kalkaska Memorial Health Center$21.38

Cash price by city

Reflects your current filters.

Cash price by city$15.24 – $81.90

Pleasanton · 1 hospital$15.24–$20.90
Seward · 1 hospital$19.50–$81.90
Manitowoc · 1 hospital$19.80–$72.05
Charlevoix · 1 hospital$21.38–$37.39
Manistee · 1 hospital$21.38–$37.39
Kalkaska · 1 hospital$21.38–$37.39

110 prices shown.

Service	Hospital	Code	List price	Cash price	Negotiated range	Allowed (median)
HC PROTEIN S FREE Inpatient & outpatient	Endeavor Health Edward Hospital	85306 HCPCS	$251	$251	—	—
Clot inhibit prot s free Outpatient	Endeavor Health Edward Hospital	85306 HCPCS	—	—	$15.32 – $25.96	—
Hc Protein S, Functional Inpatient & outpatient	University of Chicago Medical Center	85306 HCPCS	—	—	—	—
Hc Protein S Antigenic Assay Inpatient & outpatient	University of Chicago Medical Center	85306 HCPCS	—	—	—	—
Hc Clotting Inhibitors Protein S Free Inpatient & outpatient	University of Chicago Medical Center	85306 HCPCS	—	—	—	—
Clot inhibit prot s free Outpatient	University of Chicago Medical Center	85306 HCPCS	—	—	—	—
PROTEIN S FREE Outpatient	Advocate Illinois Masonic Medical Center	85306 CPT	$260	$130	$15.32 – $212	—
HB FREE PROTEIN S* Inpatient & outpatient	Endeavor Health Swedish Hospital	85306 HCPCS	$461	$461	—	—
HB R CLOT INHIBIT PROTEIN S, FREE Inpatient & outpatient	Endeavor Health Swedish Hospital	85306 HCPCS	$76.00	$76.00	—	—
PROTEIN S FREE Outpatient	Advocate Condell Medical Center	85306 CPT	$260	$130	$15.32 – $208	—
PROTEIN S FREE Outpatient	Advocate Good Samaritan Hospital	85306 CPT	$260	$130	$15.32 – $208	—
PROTEIN S FREE Outpatient	Advocate South Suburban Hospital	85306 CPT	$260	$130	$15.32 – $253	—
HC PROTEIN S ACTIVITY TEST Outpatient	Froedtert Hospital	85306 CPT	$157	$86.35	$14.89 – $136	$98.80
HC CLOTTING INHIBITORS OR ANTICOAG PROTEIN S FREE Outpatient	Froedtert Hospital	85306 CPT	$68.00	$37.40	$14.89 – $76.60	$98.80
HC PROTEIN S ANTIGEN FREE CLOTTING INHIBITOR TEST Outpatient	Froedtert Hospital	85306 CPT	$251	$138	$14.89 – $217	$98.80
PROTEIN S FREE Inpatient	Aurora BayCare Medical Center	85306 CPT	$320	$160	$192 – $272	—
PROTEIN S FREE Inpatient	Aurora Medical Center Burlington	85306 CPT	$320	$160	$192 – $272	—
85306 4830 Inpatient	Munson Healthcare Charlevoix Hospital	85306 CPT	$34.69	$29.49	$27.75 – $34.69	—
Protein S Activity, Plasma Inpatient	Munson Healthcare Charlevoix Hospital	85306 CPT	$43.98	$37.39	$35.18 – $43.98	—
Protein S Antigen, Plasma Inpatient	Munson Healthcare Charlevoix Hospital	85306 CPT	$25.15	$21.38	$20.12 – $25.15	—
85306 4830 Inpatient	Munson Healthcare Manistee Hospital	85306 CPT	$34.69	$29.49	$17.40 – $852	—
Protein S Activity, Plasma Inpatient	Munson Healthcare Manistee Hospital	85306 CPT	$43.98	$37.39	$22.06 – $852	—
Protein S Antigen, Plasma Inpatient	Munson Healthcare Manistee Hospital	85306 CPT	$25.15	$21.38	$12.62 – $852	—
PROTEIN S FREE Inpatient	Aurora Medical Center Bay Area	85306 CPT	$320	$160	$192 – $271	—
PROTEIN S FREE Inpatient	Aurora Medical Center Fond du Lac	85306 CPT	$320	$160	$192 – $272	—

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 85306 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 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 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 Anson Providence Hood River Memorial Hospital Providence Medford Medical Center Providence Milwaukie Hospital Providence Newberg Medical Center Providence Portland Medical Center Providence St Vincent Medical Center Providence Seaside Hospital Berger Hospital Doctors Hospital Dublin Methodist Hospital Grady Memorial Hospital Grant Medical Center Grove City Methodist Hospital Hardin Memorial Hospital Mansfield Hospital University Hospitals Ahuja Medical Center New York Eye and Ear Infirmary of Mount Sinai

Code 85306: frequently asked

What does code 85306 cost?: Across the published hospital price files, the disclosed cash price for 85306 ranges from $15.24 to $541. 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 85306?: 85306 is the billing code hospitals use to identify "HC PROTEIN S FREE" 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 85306 by state

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