© Copyright 2026 American Medical Association. All rights reserved.
The CPT® Code 0243T refers to the intermittent measurement of wheeze rate, which is a diagnostic evaluation used primarily in the management of asthma. This procedure involves the placement of two acoustic sensors on the patient: one sensor is positioned on the neck, just to the right of the trachea, while the other is located on the upper right side of the chest, specifically at the midclavicular line over the second intercostal space. These sensors are designed to track and record the sounds of breathing, enabling the detection of wheezing, which is a common symptom in patients with asthma. Additionally, a respiration belt is utilized, which is placed around the lower ribs. This belt collects vital data regarding the respiratory rate, the phase of breathing, and the ratio of inspiration to expiration. The sensor cables from the acoustic sensors and the respiration belt are connected to a sensor interface unit, which in turn is linked to a computer system that records and analyzes the collected data. During the procedure described by CPT® Code 0243T, intermittent measurements of wheezing are taken, and the administration of bronchodilators may occur, or bronchial challenge testing may be performed while the patient is being monitored. This process allows for a comprehensive assessment of the patient's respiratory function. Following the data collection, the physician is responsible for reviewing the recorded information and providing a detailed written interpretation of the findings, which is crucial for guiding further management and treatment of the patient's condition.
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