[A spectrum of septal defects involving the ATRIUM SEPTUM; VENTRICULAR SEPTUM; and the atrioventricular valves (TRICUSPID VALVE; BICUSPID VALVE). These defects are due to incomplete growth and fusion of the ENDOCARDIAL CUSHIONS which are important in the formation of two atrioventricular canals, site of future atrioventricular valves. ( MSH )]
UMLS (ICD9CM) C0014116 Relation/PAR: congenital heart septum defect