Megalencephaly
ICD-10 Code
Q04.5
Megalencephaly
Definition
A congenital abnormality in which the occipitofrontal circumference is greater than two standard deviations above the mean for a given age. It is associated with hydrocephalus; subdural effusion; arachnoid cysts; or is part of a genetic condition (e.g., alexander disease; sotos syndrome).
Also known as macroencephaly, megalencephaly, megalencephaly (disease) — per MONDO