What does code 94729 cost?

Across the published hospital price files, the disclosed cash price for 94729 ranges from $28.05 to $803. 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.

94729 is the billing code hospitals use to identify "HC DIFFUSING CAPACITY" 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.

94729

HCPCS

HC DIFFUSING CAPACITY

Verified from hospital fileNot a bill estimate

iDirect answer

Based on the latest published hospital price files, code 94729 (HC DIFFUSING CAPACITY) appears at 51 hospitals with disclosed cash prices from $28.05 to $803. 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 94729 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 94729 vary by about 29× across the 48 hospitals with disclosed prices here — from $28.05 to $803. Shopping around can matter.

Hospitals

Prices shown

$28.05

Lowest cash

$803

Highest cash

code 94729 cash price64 disclosed · 48 hospitals

$28.05median ~$284$803

Lowest cash price by hospital

Cash price by city

Reflects your current filters.

Cash price by city$28.05 – $803

Kalkaska · 1 hospital$28.05–$172
Kodiak · 1 hospital$81.90–$803
Polson · 1 hospital$114
Princeton · 1 hospital$135
Naperville · 1 hospital$153–$562
Tarzana · 1 hospital$160

72 prices shown.

Service	Hospital	Code	List price	Cash price	Negotiated range	Allowed (median)
HC DIFFUSING CAPACITY Inpatient & outpatient	Endeavor Health Edward Hospital	94729 HCPCS	$562	$562	—	—
EH PR DIFFUSING CAPACITY Inpatient & outpatient	Endeavor Health Edward Hospital	94729 HCPCS	$153	$153	—	—
Co/membane diffuse capacity Outpatient	Endeavor Health Edward Hospital	94729 HCPCS	—	—	$182 – $182	—
Hc Diffusing Capacity (Eg, Carbon Monoxide, Membrane) (List Separately In Add To Code For Prim Proc) Inpatient & outpatient	University of Chicago Medical Center	94729 HCPCS	—	—	—	—
Hc Diffusing Capacity Carbon Monox Res Inpatient & outpatient	University of Chicago Medical Center	94729 HCPCS	—	—	—	—
Co/membane diffuse capacity Outpatient	University of Chicago Medical Center	94729 HCPCS	—	—	—	—
DIFFUSING CAPACITY Outpatient	Advocate Illinois Masonic Medical Center	94729 CPT	$545	$273	$140 – $544	—
HB DIFFUSING CAPACITY (CARBON MONOXIDE, MEMBRANE) Inpatient & outpatient	Endeavor Health Swedish Hospital	94729 HCPCS	$618	$618	—	—
DIFFUSING CAPACITY Outpatient	Advocate Condell Medical Center	94729 CPT	$545	$273	$143 – $436	—
DIFFUSING CAPACITY Outpatient	Advocate Good Samaritan Hospital	94729 CPT	$545	$273	$140 – $541	—
DIFFUSING CAPACITY Outpatient	Advocate South Suburban Hospital	94729 CPT	$545	$273	$140 – $543	—
HC DIFFUSING CAPACITY CARBON MONOXIDE-MEMBRANE Outpatient	Froedtert Hospital	94729 CPT	$558	$307	$51.86 – $748	—
DIFFUSING CAPACITY Inpatient	Aurora BayCare Medical Center	94729 CPT	$570	$285	$342 – $485	—
DIFFUSING CAPACITY Inpatient	Aurora Medical Center Burlington	94729 CPT	$570	$285	$342 – $485	—
Diffusing capacity (eg carbon monoxide membrane) 94729 Inpatient	Munson Healthcare Charlevoix Hospital	94729 CPT	$374	$318	$299 – $374	—
Co/Membrane Diffuse Capacity Rdc (chg) Inpatient	Munson Healthcare Charlevoix Hospital	94729 CPT	$285	$242	$228 – $285	—
zzCo/Membrane Diffuse Capacity (chg) Inpatient	Munson Healthcare Charlevoix Hospital	94729 CPT	$374	$318	$299 – $374	—
Diffusing capacity (eg carbon monoxide membrane) 94729 Inpatient	Munson Healthcare Manistee Hospital	94729 CPT	$471	$400	$236 – $852	—
Co/Membrane Diffuse Capacity Rdc (chg) Inpatient	Munson Healthcare Manistee Hospital	94729 CPT	$471	$400	$236 – $852	—
zzCo/Membrane Diffuse Capacity (chg) Inpatient	Munson Healthcare Manistee Hospital	94729 CPT	$471	$400	$236 – $852	—
Co/Membrane Diffuse Capacity (C/G) Inpatient	Munson Healthcare Manistee Hospital	94729 CPT	$471	$400	$236 – $852	—
DIFFUSING CAPACITY Inpatient	Aurora Medical Center Bay Area	94729 CPT	$570	$285	$342 – $482	—
DIFFUSING CAPACITY Inpatient	Aurora Medical Center Fond du Lac	94729 CPT	$570	$285	$342 – $485	—
DIFFUSING CAPACITY Inpatient	Aurora Medical Center Kenosha	94729 CPT	$570	$285	$342 – $485	—
DIFFUSING CAPACITY Inpatient	Aurora Lakeland Medical Center	94729 CPT	$570	$285	$342 – $485	—

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 94729 prices

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

Code 94729: frequently asked

What does code 94729 cost?: Across the published hospital price files, the disclosed cash price for 94729 ranges from $28.05 to $803. 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 94729?: 94729 is the billing code hospitals use to identify "HC DIFFUSING CAPACITY" 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 94729 by state

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