In the U.S., a pulmonary function test usually runs $40–$100 for basic spirometry and $300–$1,200 for full panels, before insurance.
What You’re Paying For With A Lung Function Test
A “pulmonary function test” is an umbrella term. It can be a quick office spirometry check or a full lab session that measures volumes, airflow, and gas exchange. Prices swing because the bundle changes. The simple version uses a handheld spirometer; the full version adds body plethysmography and diffusion capacity, often with pre- and post-bronchodilator readings. The mix determines both the bill and the time you’ll spend in the chair. The American Lung Association lists the common parts—spirometry, lung volumes, and diffusion capacity—so you can match the order on your script to your bill.
Typical Prices By Test Type
Use this quick map to see how the bundle affects the price you’ll see online or on an estimate. Cash rates vary by city and facility; negotiated insurance rates are different again. Marketplace bundles that you pre-pay can be lower than walk-in hospital prices. MDsave’s posted ranges for full PFT packages land in the mid-hundreds nationwide.
| Test Type | What’s Included | Typical Cash Range |
|---|---|---|
| Spirometry Only | Breathing out hard to measure FEV1/FVC; brief visit | $40–$120 outpatient; Medicare pays ~ $35–$45 to clinicians |
| Diffusion Capacity (DLCO) | How well oxygen moves from lungs to blood | $100–$250 when ordered alone |
| Lung Volumes | Body box or other technique to size total lung capacity | $150–$350 |
| Full PFT Panel | Spirometry + volumes + diffusion; often pre/post bronchodilator | $300–$1,200 (bundle pricing varies by site) |
Those single-line items aren’t guesswork. Medicare publishes national fee schedule amounts for the component codes, and industry summaries track the common allowances for spirometry. Recent summaries put the global professional+technical amount for code 94010 in the mid-$30s to mid-$40s, with commercial plans often a bit higher; retail cash at clinics can land around the figures in the table.
How Much Does A Lung Function Test Cost — Typical Ranges
Here’s a clean range you can use for planning. A basic office spirometry visit commonly lands between $40 and $100 before insurance. A full lab panel—spirometry, volumes, diffusion—lands between $300 and $1,200 before insurance, based on posted bundle deals and self-pay quotes. If you pre-pay through a marketplace, you might see figures near the lower end of that range; large hospital outpatient departments often sit near the higher end.
Insurance changes what you owe. When the test is medically necessary and in-network, many plans apply your deductible and then coinsurance; some apply only a copay in an office setting. Clinics that share typical out-of-pocket frames cite $25–$150 as a common window after benefits apply, though plan details rule the day.
Where You Schedule Matters
Prices vary by site of care. Independent pulmonary labs and community clinics often post lower self-pay prices than hospital outpatient departments. That’s not a quality signal; it’s a billing structure difference. Tools such as FAIR Health’s consumer lookup let you estimate local charges and expected insurer payments by ZIP code, which helps you sanity-check any quote you receive.
What Drives The Bill Up Or Down
Every line on the test order has a code. Add a code, add a charge. A typical script might list spirometry before and after bronchodilator, diffusion capacity, and lung volumes. Medicare’s coverage articles spell out the common code family—94010 for spirometry, 94726/94727 for volumes, 94729 for diffusion capacity—and caution against ordering a battery that isn’t clinically needed. If your doctor circles only spirometry, that’s a short visit and a smaller bill.
Test Complexity And Add-Ons
Pre- and post-bronchodilator readings add staff time and medication. Some clinics bill a separate interpretation component; others bundle it. If your order includes a six-minute walk test or exertional oximetry, that’s another line. Commercial payers often reimburse above Medicare amounts, while cash bundles can undercut both; the wide range reflects those paths.
Site Of Care And Facility Fees
Hospital outpatient departments can add a facility fee that independent labs do not. That’s why two quotes in the same city can differ by hundreds of dollars for the same clinical work. If you have a high-deductible plan, asking your doctor whether testing can be done in an independent lab can shrink your share without changing clinical quality. (Confirm network status so the claim pays as expected.)
Network And Prior Authorization
If the lab is out-of-network, your insurer may pay less or apply a separate deductible. Some plans require prior authorization for full panels. Denials often stem from missing documentation of symptoms or medical necessity; clinicians can head that off by pairing the order with clear notes and matching diagnosis codes. Medicare and payer bulletins stress that routine, repetitive testing without a clinical reason won’t be covered.
What’s In A “Pulmonary Function Test” Script
Knowing the pieces helps you shop wisely and ask better questions. The American Lung Association explains each piece in plain language, which you can use to translate your order. If your script lists only spirometry, your visit will be short. If it lists spirometry, volumes, and diffusion, plan on a longer session and a higher charge.
Spirometry
This is the quick one. You’ll take a deep breath and blow hard into a mouthpiece. The report lists FEV1, FVC, and the ratio. It’s the common entry step for asthma and COPD work-ups.
Lung Volumes
Often done in a clear “body box,” this measures total lung capacity and related values. It helps separate restriction from obstruction and guides treatment in complex cases.
Diffusion Capacity (DLCO)
This gauges how well oxygen moves across the air sacs into blood. It’s helpful when your doctor suspects interstitial disease, emphysema, or pulmonary vascular issues.
How To Read A Quote Or Estimate
Quotes can look cryptic. Here’s a simple way to parse them. Match the codes and plain-English test names. Check whether interpretation is included. Confirm the site (independent clinic vs hospital). Ask whether the price is a cash pre-pay or a negotiated insurance rate. If you’ll use insurance, request the CPT codes so you can run them through a local cost estimator and your plan’s benefits portal.
| Line On Estimate | What It Means | Why It Matters |
|---|---|---|
| 94010 | Spirometry, basic | Small base charge; often the anchor of the visit |
| 94726 / 94727 | Lung volumes | Adds time and equipment; raises the total |
| 94729 | Diffusion capacity | Common in full panels; medium add-on |
| “Facility Fee” | Hospital outpatient charge | Only appears at hospital sites; can be large |
Ways To Lower Your Out-Of-Pocket Cost
A few small moves can trim the bill without cutting clinical value. Start by asking whether a simple spirometry visit answers the clinical question. If your doctor needs the full panel, keep it; guessing with a partial study can lead to repeat visits. Next, compare independent labs with hospital departments in your network. If your plan offers a site-of-service steerage discount, use it. Finally, ask for a cash quote and a prompt-pay discount, even if you plan to submit the claim yourself—some clinics post a fair self-pay rate for scheduled testing days.
Use Authoritative References While You Shop
Two links worth saving: the American Lung Association’s plain-language guide to test types, and Medicare’s coverage article listing the common codes. Both make it easier to compare apples to apples when you’re calling labs. Open them side by side with your estimate. Lung function tests (American Lung Association) and respiratory care coding article (CMS).
Sample Scenarios With Realistic Numbers
Scenario 1: Office Spirometry, Self-Pay. A primary-care clinic runs spirometry for a cough work-up. The posted cash price is $75, which matches the range many clinics quote for self-pay visits. The figure sits above the Medicare allowance but below many hospital cash prices.
Scenario 2: Full PFT Panel At An Independent Lab, Pre-Paid Bundle. You use a national marketplace and buy the bundled test in advance. The price in your city falls near $500; the national range posted on that marketplace spans the mid-$300s to the low-$900s. You bring the voucher and pay nothing at the desk.
Scenario 3: Hospital Outpatient Full Panel, With Insurance. The lab is in-network. Your plan applies a $1,500 deductible; you have $900 left to meet. The allowed amount is $780. You owe the remaining deductible and then coinsurance on the rest. A clinic quote across town might have been lower, but the hospital had the first open slot.
How To Prepare And Get The Result You Need
Money matters, but the test result matters more. Ask these two questions before you book: “What decision will this study help you make?” and “Do you need spirometry alone or the full panel?” If the goal is to confirm obstruction and set an inhaler plan, spirometry might be enough. If your doctor is sorting out mixed patterns or scarring, you’ll want volumes and diffusion. That conversation avoids both over-testing and under-testing.
On test day, wear loose clothing and follow any medication holds your clinician gave you. If they plan a pre- and post-bronchodilator study, bring a driver if the inhaler makes you jittery. Plan for 20 minutes for spirometry alone and up to 60–90 minutes for a full panel. Times vary by lab workflow.
What To Do If A Bill Looks Off
Start with a line-item review. Ask the lab to send the CPT codes and the diagnosis code used. Check whether the test list matches what you actually received. If a facility fee appears and you weren’t told the site was a hospital department, ask the scheduler to re-quote at an independent site in network. If you paid cash up front through a marketplace, the lab should not bill you again; contact the marketplace with your receipt. If insurance denied, ask your clinician to submit a note that spells out symptoms, medical necessity, and why each component was needed; payer coverage articles point to medical necessity as the gate.
Quick FAQ-Style Clarifications (No FAQs Section)
Is A Referral Required?
Many labs require an order from a licensed clinician, even for cash customers. That keeps the test matched to a clinical question and ensures the right components are run.
Does Insurance Cover It?
When medically necessary and in network, plans typically cover it under diagnostic testing. Your share depends on setting, deductible, and coinsurance. Some plans waive the deductible for office-based testing.
Can Occupational Clinics Do It?
Yes. Many offer spirometry as part of workplace screening and list clear cash prices that start near the low hundreds for bundled packages with a brief exam.
Method Notes And Sources You Can Trust
Ranges in this guide come from four places: national consumer marketplaces that post bundled self-pay prices; Medicare’s fee schedule and coverage article that frame code families; reputable clinical groups that explain what each test includes; and trade summaries of typical spirometry allowances. You can cross-check local numbers with a neutral tool such as FAIR Health’s consumer cost lookup by entering your ZIP code and relevant codes from your estimate.