CPT® Code 99184

Initiation of selective head or total body hypothermia in the critically ill neonate, includes appropriate patient selection by review of clinical, imaging and laboratory data, confirmation of esophageal temperature probe location, evaluation of amplitude EEG, supervision of controlled hypothermia, and assessment of patient tolerance of cooling

The CPT® Code 99184 refers to the initiation of selective head or total body hypothermia in critically ill neonates. This procedure is specifically designed for term or near-term neonates who have experienced birth-related oxygen deprivation, commonly known as hypoxic ischemic encephalopathy (HIE) or perinatal asphyxia, and exhibit signs of brain injury. The process begins with a thorough patient selection, which involves a comprehensive review of clinical data, imaging studies, and laboratory results to ensure the appropriateness of the hypothermia treatment. A critical aspect of this procedure is the confirmation of the esophageal temperature probe's location, which is essential for accurate temperature monitoring during the cooling process. Additionally, the evaluation of amplitude integrated electroencephalography (aEEG) is performed to monitor brain activity, as this helps in assessing the infant's neurological status throughout the treatment. The supervision of controlled hypothermia is a vital component, as it requires careful management to ensure the infant's tolerance to the cooling process. The goal of initiating hypothermia is to lower the cerebral metabolic rate for glucose and oxygen, thereby reducing the risk of delayed brain injury that can occur hours after the initial hypoxic event. This therapeutic approach aims to decrease the incidence of HIE and improve the chances of normal survival for affected infants. The procedure is complex and requires meticulous attention to detail, including the management of various physiological parameters and the provision of supportive care throughout the duration of the therapy.