What is medical service code 94770?

Medical service code 94770 refers to a specific procedure related to the assessment of lung function, often involving the measurement of exhaled nitric oxide (FeNO) as a marker of airway inflammation. This test is typically used in the management of Asthma and other respiratory conditions to help guide treatment decisions. It provides valuable information about the inflammatory status of the airways, aiding in the evaluation of asthma control and response to therapy.