CPT® Code 94662

Continuous negative pressure (CNP) ventilation is a therapeutic procedure that employs subatmospheric pressure applied to the thoracic surface to facilitate lung expansion and promote inhalation. This method involves creating a negative pressure environment around the thorax, which encourages the chest to expand, allowing air to flow into the lungs. Following this phase, the pressure is adjusted back to atmospheric levels or even higher, which aids in the natural recoil of the lungs and chest wall, leading to exhalation. CNP ventilation is particularly beneficial for patients experiencing stable or gradually worsening respiratory failure due to various conditions, including neuromuscular diseases, deformities of the chest wall, or central hypoventilation syndromes. The CPT® Code 94662 specifically pertains to the initiation and management of CNP ventilation, encompassing the initial setup of the CNP device and its ongoing management. This procedure is typically carried out by a durable medical equipment provider, who delivers the necessary CNP device and associated equipment to the patient's home or a residential care facility. The setup process includes programming the device according to the specifications outlined in a written prescription from a physician or qualified healthcare professional. Additionally, the patient or their caregiver receives thorough instruction on the proper use of the CNP device, and they are required to demonstrate their understanding of its operation to ensure effective and safe usage.