What does code 84999 cost?

Across the published hospital price files, the disclosed cash price for 84999 ranges from $4.01 to $466. 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.

84999 is the billing code hospitals use to identify "Potassium Body Fluid" 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.

84999

CPT

Potassium Body Fluid

Verified from hospital fileNot a bill estimate

iDirect answer

Based on the latest published hospital price files, code 84999 (Potassium Body Fluid) appears at 42 hospitals with disclosed cash prices from $4.01 to $466. 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 84999 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 84999 vary by about 116× across the 41 hospitals with disclosed prices here — from $4.01 to $466. Shopping around can matter.

Hospitals

Prices shown

$4.01

Lowest cash

$466

Highest cash

code 84999 cash price70 disclosed · 41 hospitals

$4.01median ~$62.50$466

Lowest cash price by hospital

Stanford Health Care$4.01
Providence Alaska Medical Center$13.26
Providence Seward Hospital$21.06
Providence Mission Hospital - Mission Viejo$34.22
Providence St Joseph Hospital Orange$34.22
St Jude Medical Center$34.22

Cash price by city

Reflects your current filters.

Cash price by city$4.01 – $69.42

Stanford · 1 hospital$4.01–$7.61
Anchorage · 1 hospital$13.26–$69.42
Seward · 1 hospital$21.06–$56.94
Mission Viejo · 1 hospital$34.22
Orange · 1 hospital$34.22
Fullerton · 1 hospital$34.22

90 prices shown.

Service	Hospital	Code	List price	Cash price	Negotiated range	Allowed (median)
Potassium Body Fluid Inpatient	Carle Foundation Hospital	84999 CPT	$114	$114	$11.40 – $75.35	—
HC POTASSIUM STOOL Inpatient & outpatient	Endeavor Health Edward Hospital	84999 HCPCS	$306	$306	—	—
HC OSMOLALITY STOOL Inpatient & outpatient	Endeavor Health Edward Hospital	84999 HCPCS	$298	$298	—	—
HC UNSPECIFIED CHEMISTRY PROCEDURE CJD Inpatient & outpatient	Endeavor Health Edward Hospital	84999 HCPCS	$432	$432	—	—
HC NEPHROCHECK ASSAY Inpatient & outpatient	Endeavor Health Edward Hospital	84999 HCPCS	$237	$237	—	—
Potassium Body Fluid Inpatient	Methodist Medical Center of Illinois	84999 CPT	$114	$114	$11.40 – $75.35	—
Hc Osmalality Fecal Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Polyglutamate Medhotrexate Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Phenolphthalein Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Phenolphthalein,Ur Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Potassium Fecal Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Referred Lab Test Level 2 Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Referred Lab Test Level 3 Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Referred Lab Test Level 4 Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Referred Lab Test Level 5 Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Referred Lab Test Level 6 Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Referred Lab Test Level 7 Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Referred Lab Test Level 8 Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Referred Lab Test Level 1 Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Nephrocheck Akirisk Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Potassium, Fluid Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Amphotericin B Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Nitrogen Total Ur Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Rapid Progress Dementia Eval, Csf Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—
Hc Cjd Evaluation, Csf Inpatient & outpatient	University of Chicago Medical Center	84999 HCPCS	—	—	—	—

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 84999 prices

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

Carle Foundation Hospital Endeavor Health Edward Hospital Methodist Medical Center of Illinois University of Chicago Medical Center Carle BroMenn Medical Center Advocate Illinois Masonic Medical Center Endeavor Health Swedish Hospital Advocate Condell Medical Center Advocate Good Samaritan Hospital Advocate South Suburban Hospital Memorial Hospital of South Bend Froedtert Hospital Froedtert Menomonee Falls Hospital Aurora BayCare Medical Center Aurora Medical Center Burlington 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 Providence Alaska Medical Center Providence Kodiak Island Medical Center Stanford Health Care 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 Providence Mission Hospital - Mission Viejo Providence Saint John's Health Center Providence St Joseph Hospital Orange St Jude Medical Center St Mary Medical Center Providence St Joseph Medical Center Atrium Health Anson

Code 84999: frequently asked

What does code 84999 cost?: Across the published hospital price files, the disclosed cash price for 84999 ranges from $4.01 to $466. 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 84999?: 84999 is the billing code hospitals use to identify "Potassium Body Fluid" 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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