Other reduction deformities of brain

**Inclusion terms:** - Absence of part of brain - Agenesis of part of brain - Agyria - Aplasia of part of brain - Hydranencephaly - Hypoplasia of part of brain - Lissencephaly - Microgyria - Pachygyria

**Excludes1:** - congenital malformations of corpus callosum (Q04.0)