CPT® Code 94770

Deleted

A carbon dioxide (CO2) expired gas determination is a diagnostic procedure that measures the concentration of carbon dioxide in a patient's exhaled air. This test is conducted using an infrared analyzer, a specialized device that utilizes the principle of infrared light absorption to quantify the amount of CO2 present in the expired gas. During the procedure, the patient inhales ambient air, which contains a normal concentration of CO2, and then exhales into the infrared analyzer. The analyzer detects the specific wavelengths of infrared light that are absorbed by CO2 molecules, allowing for an accurate measurement of the gas concentration in the exhaled breath. Following the analysis, the physician interprets the results and generates a written report detailing the findings, which can be used to assess the patient's respiratory function and metabolic status.