CPT® Code 83987

The CPT® Code 83987 refers to the measurement of pH in exhaled breath condensate, which is a specific test used to assess the acid-base balance of the respiratory system. The pH level is determined by measuring the concentration of hydrogen ions (H+) present in the exhaled breath condensate. This measurement is crucial as it provides insights into the acidity or alkalinity of the specimen being tested. A pH level that is lower than the normal range indicates acidosis, suggesting that the specimen is too acidic, while a higher pH level indicates alkalosis, meaning the specimen is too alkaline. This test is particularly valuable in the context of diagnosing inflammatory lung diseases and monitoring the effectiveness of treatment interventions. The methodology for this test involves collecting exhaled air using a specialized device that captures the moisture from the breath. The device typically features a tube with a one-way valve that directs the exhaled air into a collection chamber, where the moisture condenses into droplets. These droplets are then analyzed using a pH meter or probe to determine the acid-base balance of the exhaled breath condensate.