Question:
What are the key coding considerations and documentation requirements for reporting code 94640?
Answer:
The description of code 94640 was revised in 2016 to clarify that this is a bundled code representing both diagnostic and therapeutic services. Code 94640 includes different modes of treatment, including aerosol generator, nebulizer, metered-dose inhaler (MDI), or intermittent positive pressure breathing (IPPB) device. This code is appropriate when documentation indicates the treatment is administered to a patient with an acute airway obstruction. It should not be reported for routine nebulizer or MDI treatments for patients with unrelated conditions. In addition, this CPT® code is to be reported for the induction of sputum for diagnostic purposes. The use of CPT code 94640 for intrapulmonary percussive ventilation (IPV) was clarified in a September 2010 AMA Coding Communication. Defined as a therapeutic modality, IPV is combined with a continuous nebulizer therapy to assist with the elimination of secretions. In addition to the treatment, the therapist will typically instruct the patient on proper techniques for a deep cough or huff cough to improve mobilization and elimination of secretions.
