CPT® Code 94370

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The CPT® Code 94370 refers to the determination of airway closing volume through single breath tests. This procedure involves measuring the total airway closing volume of a patient during a single breath. Airway closing volume is a critical parameter in assessing lung function, particularly in understanding how the airways behave during the breathing cycle. It provides valuable insights into the mechanics of the lungs and can help identify potential respiratory issues. The measurement is typically performed in a controlled environment, where the patient is instructed to take a deep breath and then exhale, allowing for the assessment of the volume at which the airways begin to close. This test is essential for evaluating conditions that may affect lung capacity and airflow, contributing to a comprehensive respiratory assessment.