• Q00 Anencephaly and similar malformations
  • Q01 Encephalocele
  • Q02 Microcephaly
  • Q03 Congenital hydrocephalus
  • Q04 Other congenital malformations of brain
  • Q05 Spina bifida
  • Q06 Other congenital malformations of spinal cord
  • Q07 Other congenital malformations of nervous system