October 9, 2025
Pulmonary Function Tests (PFTs) are essential diagnostic tools that help evaluate how well your lungs are working. They provide insight into airflow, lung volume, and gas exchange, allowing healthcare providers to detect, monitor, and manage various lung conditions. For patients experiencing breathing difficulties, chronic cough, or suspected respiratory disorders, PFTs are often the first step in getting the right treatment.
A pulmonary function test (PFT test) is a group of non-invasive procedures used to measure lung performance. These tests check how efficiently your lungs move air in and out, as well as how effectively oxygen passes into the blood.
Common reasons a provider may order PFTs include:
PFTs consist of different methods depending on what your provider needs to measure:
Wondering what a pulmonary function test is like? Here’s what you can expect:
To ensure accurate results, it’s important to follow preparation guidelines:
If you’re wondering what not to do before a pulmonary function test, smoking and inhaler use are the most important restrictions.
A standard PFT can last between 30 minutes and 1 hour, depending on how many measurements are needed. Some patients may finish earlier if only spirometry is performed.
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Here are the most frequently used CPT codes for PFTs:
PFTs are ordered to diagnose or monitor a variety of respiratory conditions. Commonly used ICD-10 codes include:
Results are compared against normal values based on age, sex, height, and race. Your provider will explain whether your results fall within the expected range. Abnormal results may point to lung conditions such as:
PFTs are especially valuable for individuals with COPD or chronic cough, as they help track lung decline and assess treatment effectiveness. For patients with unexplained coughs, PFTs can rule out or confirm airway obstruction.
Pulmonary Function Tests are a vital tool for diagnosing and monitoring lung health, especially for patients with asthma, COPD, chronic cough, or other respiratory conditions. By understanding the procedure, preparation, and results, providers can make better-informed treatment decisions and improve patient outcomes.
Cures Medical Billing understands that accurate documentation and billing for PFTs are just as important as the test itself. Our experts ensure correct CPT coding, timely claim submission, and reduced denials so providers can maximize reimbursements and focus on patient care.
Ready to streamline your pulmonary function test billing? Contact Cures Medical Billing today and let our expert team handle your coding and claims with accuracy and efficiency.
A PFT is needed if you have breathing problems, chronic cough, or conditions like asthma or COPD. Doctors may also order it before surgery.
Do not smoke or use inhalers for several hours before testing unless instructed otherwise.
Most PFTs last about 30 minutes to 1 hour, depending on the tests performed.
Yes. PFTs are safe, non-invasive, and generally cause only mild temporary discomfort, such as shortness of breath.
PFTs can help diagnose asthma, COPD, lung fibrosis, emphysema, pulmonary hypertension, and lung cancer.
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