C	C99255	Neonatal Opiate Withdrawal Syndrome	Neonatal Opiate Withdrawal Syndrome		A constellation of neurobehavioral features observed in a neonate following cessation or reduction of postnatal exposure to opioids.		C101321	Drug Withdrawal Syndrome in Newborn			C99147	Neonatal Research Network Terminology
C	C101273	Suspected Necrotizing Enterocolitis	Suspected Necrotizing Enterocolitis		The diagnosis assigned when a health care practitioner feels strongly the patient has necrotizing enterocolitis, but lacks definitive proof.		C84915	Necrotizing Enterocolitis			C99147	Neonatal Research Network Terminology
C	C87101	Neonatal Abstinence Syndrome	Neonatal Abstinence Syndrome	NAS	A constellation of neurobehavioral features observed in a neonate following antenatal exposure to drugs including opioids, benzodiazepines, and selective serotonin reuptake inhibitors.	A constellation of neurobehavioral features observed in a neonate following antenatal exposure to drugs including opioids, benzodiazepines, and selective serotonin reuptake inhibitors.	C101321	Drug Withdrawal Syndrome in Newborn			C99147	Neonatal Research Network Terminology
C	C101321	Neonatal Drug Withdrawal	Drug Withdrawal Syndrome in Newborn	DWN	A constellation of neurobehavioral features observed following cessation or reduction of antenatal or postnatal drug exposure.		C98996	Neonatal Disorder	C103170	Postnatal Drug Withdrawal	C99147	Neonatal Research Network Terminology
C	C98928	Fetal Methotrexate Syndrome	Fetal Methotrexate Syndrome		A teratogenic disorder observed in a newborn or child of a mother who was exposed to methotrexate during pregnancy. Manifestations of the syndrome include craniofacial, digital, and skeletal malformations.		C92719	Fetal Disorder			C99147	Neonatal Research Network Terminology
C	C98930	Fetal Valproate Syndrome	Fetal Valproate Syndrome		A teratogenic disorder observed in a newborn or child of a mother who was exposed to valproic acid during pregnancy. Manifestations include musculoskeletal abnormalities, intellectual disability, spina bifida, and distinctive facial features.		C92719	Fetal Disorder			C99147	Neonatal Research Network Terminology
C	C98906	Fetal Warfarin Syndrome	Fetal Warfarin Syndrome	Fetal Coumadin Syndrome	A teratogenic disorder observed in a newborn or child of a mother who was exposed to warfarin during pregnancy. Manifestations include nasal bridge depression, nasal bones hypoplasia, microcephaly, congenital heart disorders, and brachydactyly.		C92719	Fetal Disorder			C99147	Neonatal Research Network Terminology
C	C48592	Gastrointestinal Hemorrhage	Gastrointestinal Hemorrhage		Bleeding originating from any part of the gastrointestinal tract.		C26791	Hemorrhage			C99147	Neonatal Research Network Terminology
C	C3079	Heart Disorder	Heart Disease		A non-neoplastic or neoplastic disorder that affects the heart and/or the pericardium.  Representative examples include endocarditis, pericarditis, atrial myxoma, cardiac myeloid sarcoma, and pericardial malignant mesothelioma.		C2931	Cardiovascular Disorder			C99147	Neonatal Research Network Terminology
C	C3198	Lung Disorder	Lung Disorder	Disorder of Lung	A non-neoplastic or neoplastic disorder affecting the lung. Representative examples of non-neoplastic disorders include chronic obstructive pulmonary disease and pneumonia. Representative examples of neoplastic disorders include benign processes (e.g., respiratory papilloma) and malignant processes (e.g., lung carcinoma and metastatic cancer to the lung).		C26871	Respiratory System Disorder			C99147	Neonatal Research Network Terminology
C	C3081	Cardiac Neoplasm	Neoplasm of Heart		A benign or malignant neoplasm that affects the heart and/or the pericardium.  Representative examples include atrial myxoma, cardiac myeloid sarcoma, and pericardial malignant mesothelioma.		C3262	Neoplasm|Neoplastic Disease			C99147	Neonatal Research Network Terminology
C	C99012	Pneumoperitoneum	Pneumoperitoneum		Free air within the peritoneal cavity.		C100104	Signs or Symptoms			C99147	Neonatal Research Network Terminology
C	C26871	Respiratory Disorder	Respiratory System Disorder	Disorder of Respiratory System	A non-neoplastic or neoplastic disorder that affects the respiratory system.  Representative examples include pneumonia, chronic obstructive pulmonary disease, pulmonary failure, lung adenoma, lung carcinoma, and tracheal carcinoma.		C2991	Disease or Disorder|Disease			C99147	Neonatal Research Network Terminology
C	C98929	Fetal Retinoid Syndrome	Retinoic Acid Embryopathy	Fetal Isotretinoin Syndrome	A rare syndrome that affects the fetus and is caused by the maternal use of retinoids during pregnancy. It is characterized by growth delay, skull and facial malformations, heart malformations, and central nervous system malformations.		C92719	Fetal Disorder			C99147	Neonatal Research Network Terminology
C	C84915	Necrotizing Enterocolitis	Necrotizing Enterocolitis		A serious, life-threatening disorder characterized by necrotic changes affecting portions of the small and large intestine. It is usually seen in neonates, particularly premature infants. Signs and symptoms include abdominal distention and tenderness, intestinal bleeding and ileus. It may lead to cardiovascular collapse and shock.		C97171	Congenital Abnormality of the Digestive System			C99147	Neonatal Research Network Terminology