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Congenital Abnormalities

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Hydrocephalus » Head Q03.-


A congenital malformation characterized by dilatation of the cerebral ventricles, not associated with a primary brain atrophy, with or without enlargement of the head, and diagnosed at birth. Not counted when present with encephalocele or spina bifida. Excl. macrocephaly without dilatation of ventricular system, skull of macerated fetus, hydranencephaly, holoprosencephaly, and postnatally acquired hydrocephalus.
It is not considered when associated with encephalocele [Q01.-] or spina bifida [Q05.0 - Q05.4]. Excludes: macrocephaly without ventricular system dilatation [Q75.3], skull of a macerated fetus, hydranencephaly [Q04.3], holoprosencephaly [Q04.2], and postnatally acquired hydrocephaly [G91.-].



Image 1: Photos 1 and 2: Patients with hydrocephalus. Photo 3: Brain CT Scan of a patient with hydrocephalus, see the severe dilatation of ventricular system. Image 5: Patient with hydrocephalus due to holoprosencephaly See Q87.0.