Respiratory Question for the Week of February 13, 2023


When is lung function evaluation performed for pulmonary function testing?


Pulmonary function tests describe a wide array of measurements designed to evaluate the status of structural components of the lung. Understand they include but are not limited to, spirometry, diffusion capacity studies, lung volumes, and gas diffusion studies. The evaluation of lung function is indicated for the following reasons:

  • To determine the presence of lung disease or abnormality of lung function
  • To determine the extent of abnormalities and the causative disease process
  • To determine the extent of disability due to abnormal lung function
  • To determine the progression of the disease
  • To determine the type of disease or lesion
  • To determine a course of therapy in the treatment of the particular condition

CPT® copyright 2022 American Medical Association (AMA). All rights reserved.

Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

CPT is a registered trademark of the American Medical Association.