CPT® Code 95070

Inhalation bronchial challenge testing (not including necessary pulmonary function tests), with histamine, methacholine, or similar compounds

An inhalation bronchial challenge test is a diagnostic procedure primarily utilized in the evaluation and management of asthma. This test involves the use of a nebulizer, which is a device that converts liquid medication into a mist, allowing the patient to inhale specific concentrations of compounds such as histamine, methacholine, or similar agents. During the procedure, the patient inhales the mist for a designated duration, after which they exhale forcefully into a spirometer. The spirometer is an instrument that measures the volume of air inhaled and exhaled, as well as the timing of these breaths. The results from the spirometer are graphically represented, providing a visual depiction of the patient's respiratory function. Throughout the test, the concentration of the inhaled compound may be modified to elicit a bronchial response, which is indicative of airway hyperreactivity. If adjustments to the concentration are made, the patient will inhale the mist again for a specified time, followed by additional spirometric measurements. The physician is responsible for reviewing and interpreting the data collected from the bronchial challenge test, including the spirometer readings, and subsequently generates a written report detailing the findings. This procedure is critical for understanding the patient's respiratory status and guiding further management of asthma or related conditions.