CPT® Code 94644

The CPT® Code 94644 refers to the procedure of continuous inhalation treatment with aerosol medication specifically designed for acute airway obstruction, and it is applicable for the first hour of treatment. This procedure is commonly known as continuous bronchodilator therapy (CBT). During this treatment, the patient receives a bronchodilator medication that is aerosolized, meaning it is converted into fine particles suspended in a gaseous propellant. When the aerosol pressure is released, the medication is inhaled into the lungs as a fine spray. The primary action of the bronchodilator is to relax the smooth muscle surrounding the bronchioles and lung tissue, which may have constricted due to conditions such as an asthma attack or hypersensitivity reaction, leading to significant restriction of airflow. Throughout the administration of the aerosolized medication, healthcare providers perform periodic assessments to monitor the patient's response to the treatment. Adjustments to the dosage may be made as necessary to achieve the desired therapeutic effect. Once the symptoms of acute airway obstruction have been alleviated, the inhalation treatment is appropriately discontinued. For billing purposes, code 94644 is utilized for the initial hour of continuous inhalation treatment, while code 94645 is designated for each additional hour of treatment beyond the first hour.