CPT® Code 93150

The CPT® Code 93150 refers to the therapy activation of an implanted phrenic nerve stimulator system, which includes all necessary interrogation and programming of the device. This procedure is typically performed approximately one month after the surgical implantation of the phrenic nerve stimulator. The primary purpose of this device is to treat patients suffering from moderate to severe central sleep apnea (CSA), a condition characterized by the brain's temporary cessation of signaling the muscles responsible for breathing. This interruption can lead to significant breathing difficulties during sleep. The phrenic nerve stimulator works by stimulating the diaphragm, prompting it to contract and thereby facilitating rhythmic breathing. Various factors, such as cardiovascular disease, stroke, conditions affecting the neck or brainstem, morbid obesity, and the use of narcotics, can contribute to the development of CSA. During the initial implantation, the device is activated to collect data over the course of one month, which is crucial for the subsequent programming of stimulation parameters. This data collection phase allows for the assessment of historical breathing patterns, which is essential for determining optimal settings for respiration rate, pulse amplitude, pulse duration, and stimulation impedance timing. Additionally, the procedure involves evaluating battery status, selecting appropriate electrodes, and ensuring patient compliance with the implanted lead(s). The gathered parameters are then utilized to configure the initial settings, establishing the upper and lower limits of pulse stimulation, as well as the rate and duration of stimulation required for effective treatment.