Perinatal Terminology Neonatal Hypoxic Ischemic Encephalopathy C0149878 Neonatal Hypoxic Ischemic Encephalopathy Neonatal Hypoxic Ischemic Encephalopathy Injury to the central nervous system in the newborn period that occurs when there is insufficient delivery of oxygen to all or part of the brain. Neonatal HIE Disease or Syndrome NICHD Injury to the central nervous system in the newborn period that occurs when there is insufficient delivery of oxygen to all or part of the brain. C119751 Neonatal Encephalopathy Hypoxic Ischemic Encephalopathy NICHD Terminology