What does code 83921 cost?

Across the published hospital price files, the disclosed cash price for 83921 ranges from $7.20 to $753. 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.

83921 is the billing code hospitals use to identify "HC METHYLMALONIC ACID SERUM" 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.

83921

HCPCS

HC METHYLMALONIC ACID SERUM

Verified from hospital fileNot a bill estimate

iDirect answer

Based on the latest published hospital price files, code 83921 (HC METHYLMALONIC ACID SERUM) appears at 47 hospitals with disclosed cash prices from $7.20 to $753. 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 83921 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 83921 vary by about 105× across the 46 hospitals with disclosed prices here — from $7.20 to $753. Shopping around can matter.

Hospitals

Prices shown

$7.20

Lowest cash

$753

Highest cash

code 83921 cash price87 disclosed · 46 hospitals

$7.20median ~$74.46$753

Lowest cash price by hospital

Providence Mission Hospital - Mission Viejo$7.20
Providence St Joseph Hospital Orange$7.20
St Jude Medical Center$7.20
St Mary Medical Center$7.20
Petaluma Valley Hospital$7.65
Queen of The Valley Medical Center$7.65

Cash price by city

Reflects your current filters.

Cash price by city$7.20 – $101

Mission Viejo · 1 hospital$7.20–$95.40
Orange · 1 hospital$7.20–$95.40
Fullerton · 1 hospital$7.20–$95.40
Apple Valley · 1 hospital$7.20–$95.40
Petaluma · 1 hospital$7.65–$101
Napa · 1 hospital$7.65–$101

91 prices shown.

Service	Hospital	Code	List price	Cash price	Negotiated range	Allowed (median)
HC METHYLMALONIC ACID SERUM Inpatient & outpatient	Endeavor Health Edward Hospital	83921 HCPCS	$303	$303	—	—
HC GAMMA-HYDROXYBUTYRIC ACID (GHB) Inpatient & outpatient	Endeavor Health Edward Hospital	83921 HCPCS	$243	$243	—	—
HC ORGANIC ACID SINGLE QUANTITATIVE Inpatient & outpatient	Endeavor Health Edward Hospital	83921 HCPCS	$753	$753	—	—
Organic acid single quant Outpatient	Endeavor Health Edward Hospital	83921 HCPCS	—	—	$21.21 – $35.93	—
Hc Methylmalonic Acid, Quantitative Inpatient & outpatient	University of Chicago Medical Center	83921 HCPCS	—	—	—	—
Hc Orotic Acid, Urine Inpatient & outpatient	University of Chicago Medical Center	83921 HCPCS	—	—	—	—
Organic acid single quant Outpatient	University of Chicago Medical Center	83921 HCPCS	—	—	—	—
HB R METHYLMALONIC ACID Inpatient & outpatient	Endeavor Health Swedish Hospital	83921 HCPCS	$89.00	$89.00	—	—
ORGANIC ACID, SINGLE QUANT Outpatient	Advocate Condell Medical Center	83921 CPT	$210	$105	$21.21 – $168	—
ORGANIC ACID, SINGLE QUANT Outpatient	Advocate Good Samaritan Hospital	83921 CPT	$210	$105	$21.21 – $168	—
ORGANIC ACID, SINGLE QUANT Outpatient	Advocate South Suburban Hospital	83921 CPT	$210	$105	$21.21 – $205	—
HC OROTIC ACID QUANTITATIVE SINGLE Outpatient	Froedtert Hospital	83921 CPT	$302	$166	$20.62 – $261	—
HC METHYLMALONIC ACID (MMA) QUANTITATIVE SINGLE Outpatient	Froedtert Menomonee Falls Hospital	83921 CPT	$140	$77.00	$21.21 – $126	—
ORGANIC ACID, SINGLE QUANT Inpatient	Aurora BayCare Medical Center	83921 CPT	$325	$163	$195 – $276	—
ORGANIC ACID, SINGLE QUANT Inpatient	Aurora Medical Center Burlington	83921 CPT	$325	$163	$195 – $276	—
Hippuric Acid, Urine Inpatient	Munson Healthcare Charlevoix Hospital	83921 CPT	$87.60	$74.46	$70.08 – $87.60	—
Methylmalonic Acid, Quant Serum Inpatient	Munson Healthcare Charlevoix Hospital	83921 CPT	$22.55	$19.17	$18.04 – $22.55	—
Methylmalonic Acid, Quantitative, Serum Inpatient	Munson Healthcare Charlevoix Hospital	83921 CPT	$22.55	$19.17	$18.04 – $22.55	—
Methylmalonic Acid, Quantitative, Urine Inpatient	Munson Healthcare Charlevoix Hospital	83921 CPT	$22.55	$19.17	$18.04 – $22.55	—
Hippuric Acid, Urine Inpatient	Munson Healthcare Manistee Hospital	83921 CPT	$87.60	$74.46	$43.95 – $852	—
Methylmalonic Acid, Quantitative, Serum Inpatient	Munson Healthcare Manistee Hospital	83921 CPT	$22.55	$19.17	$11.31 – $852	—
Methylmalonic Acid, Quantitative, Urine Inpatient	Munson Healthcare Manistee Hospital	83921 CPT	$22.55	$19.17	$11.31 – $852	—
ORGANIC ACID, SINGLE QUANT Inpatient	Aurora Medical Center Bay Area	83921 CPT	$325	$163	$195 – $275	—
ORGANIC ACID, SINGLE QUANT Outpatient	Aurora Medical Center Bay Area	83921 CPT	$325	$163	$16.97 – $275	—
ORGANIC ACID, SINGLE QUANT Inpatient	Aurora Medical Center Fond du Lac	83921 CPT	$325	$163	$195 – $276	—

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 83921 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 Endeavor Health Swedish 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 Grafton Aurora Medical Center Kenosha Aurora Lakeland Medical Center 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 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 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 83921: frequently asked

What does code 83921 cost?: Across the published hospital price files, the disclosed cash price for 83921 ranges from $7.20 to $753. 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 83921?: 83921 is the billing code hospitals use to identify "HC METHYLMALONIC ACID SERUM" 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