All C16Congenital, Hereditary, and Neonatal Diseases and AbnormalitiesD009358 + C16.131AbnormalitiesD000013 + C16.131.666Nervous System MalformationsD009421 + C16.131.666.142Central Nervous System CystsD020863 + C16.131.666.142.100Arachnoid CystsD016080