What does code 84393 cost?

Across the published hospital price files, the disclosed cash price for 84393 ranges from $200 to $453. 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.

84393 is the billing code hospitals use to identify "HC TAU PHOSPHORYLATED (PTAU 181, PTAU 217) EACH" 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.

84393

HCPCS

HC TAU PHOSPHORYLATED (PTAU 181, PTAU 217) EACH

Verified from hospital fileNot a bill estimate

iDirect answer

Based on the latest published hospital price files, code 84393 (HC TAU PHOSPHORYLATED (PTAU 181, PTAU 217) EACH) appears at 27 hospitals with disclosed cash prices from $200 to $453. 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 84393 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 84393 vary by about 2.3× across the 25 hospitals with disclosed prices here — from $200 to $453. Shopping around can matter.

Hospitals

Prices shown

$200

Lowest cash

$453

Highest cash

code 84393 cash price30 disclosed · 25 hospitals

$200median ~$383$453

Lowest cash price by hospital

Cash price by city

Reflects your current filters.

Cash price by city$200 – $298

Stanford · 1 hospital$200
Morganfield · 1 hospital$226
Princeton · 1 hospital$254
Charlevoix · 1 hospital$298
Manistee · 1 hospital$298
Kalkaska · 1 hospital$298

35 prices shown.

Service	Hospital	Code	List price	Cash price	Negotiated range	Allowed (median)
HC TAU PHOSPHORYLATED (PTAU 181, PTAU 217) EACH Inpatient & outpatient	Endeavor Health Edward Hospital	84393 HCPCS	$432	$432	—	—
Tau phosphorylated ea Outpatient	Endeavor Health Edward Hospital	84393 HCPCS	—	—	$129 – $208	—
Hc Phospho-Tau 217, Plasma Inpatient & outpatient	University of Chicago Medical Center	84393 HCPCS	—	—	—	—
Hc Alzheimer's Disease Evaluation, Tau Phosphorylated, Csf Inpatient & outpatient	University of Chicago Medical Center	84393 HCPCS	—	—	—	—
Tau phosphorylated ea Outpatient	University of Chicago Medical Center	84393 HCPCS	—	—	—	—
TAU PROTEIN Outpatient	Advocate South Suburban Hospital	84393 CPT	$770	$385	$269 – $750	—
HC ALZHEIMER TAU PHOSPHORYLATED, EA Outpatient	Froedtert Hospital	84393 CPT	$642	$353	$193 – $555	—
HC PHOSPHORYLATED-TAU 217 Outpatient	Froedtert Menomonee Falls Hospital	84393 CPT	$824	$453	$247 – $741	—
TAU PROTEIN Inpatient	Aurora BayCare Medical Center	84393 CPT	$770	$385	$462 – $655	—
TAU PROTEIN Inpatient	Aurora Medical Center Burlington	84393 CPT	$770	$385	$462 – $655	—
Phospho-Tau(217), Plasma Inpatient	Munson Healthcare Charlevoix Hospital	84393 CPT	$350	$298	$280 – $350	—
Phospho-Tau(217), Plasma Inpatient	Munson Healthcare Manistee Hospital	84393 CPT	$350	$298	$176 – $852	—
TAU PROTEIN Inpatient	Aurora Medical Center Bay Area	84393 CPT	$770	$385	$462 – $651	—
TAU PROTEIN Inpatient	Aurora Medical Center Fond du Lac	84393 CPT	$770	$385	$462 – $655	—
TAU PROTEIN Inpatient	Aurora Medical Center Grafton	84393 CPT	$770	$385	$462 – $655	—
TAU PROTEIN Inpatient	Aurora Medical Center Kenosha	84393 CPT	$770	$385	$462 – $655	—
TAU PROTEIN Inpatient	Aurora Lakeland Medical Center	84393 CPT	$770	$385	$462 – $655	—
HC PHOSPHORYLATED-TAU 217 Inpatient	Froedtert West Bend Hospital	84393 CPT	$824	$453	$494 – $782	—
HC ALZHEIMER TAU PHOSPHORYLATED, EA Inpatient	Froedtert Holy Family Memorial Hospital	84393 CPT	$642	$353	$385 – $565	—
HC PHOSPHORYLATED-TAU 217 Inpatient	Froedtert Holy Family Memorial Hospital	84393 CPT	$824	$453	$494 – $725	—
HC ALZHEIMER TAU PHOSPHORYLATED, EA Inpatient	Froedtert Community Hospital - Mequon	84393 CPT	$546	$300	$327 – $480	—
HC PHOSPHORYLATED-TAU 217 Inpatient	Froedtert Community Hospital - Mequon	84393 CPT	$700	$385	$420 – $616	—
HC ALZHEIMER TAU PHOSPHORYLATED, EA Outpatient	Froedtert Community Hospital - New Berlin	84393 CPT	$546	$300	$218 – $480	—
HC PHOSPHORYLATED-TAU 217 Outpatient	Froedtert Community Hospital - New Berlin	84393 CPT	$700	$385	$280 – $616	—
HC PHOSPHORYLATED-TAU 217 Inpatient	Froedtert Community Hospital - Oak Creek	84393 CPT	$700	$385	$420 – $616	—

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 84393 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 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 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 Munson Healthcare Cadillac Munson Medical Center Deaconess Gibson Hospital Deaconess Union County Hospital Deaconess Illinois Medical Center Stanford Health Care Texas Health Center for Diagnostics and Surgery Plano

Code 84393: frequently asked

What does code 84393 cost?: Across the published hospital price files, the disclosed cash price for 84393 ranges from $200 to $453. 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 84393?: 84393 is the billing code hospitals use to identify "HC TAU PHOSPHORYLATED (PTAU 181, PTAU 217) EACH" 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.

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Hospitals publishing code 84393 by state

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