ICD-11 classes
08 Diseases of the nervous system
Structural developmental anomalies of the nervous system
LA05 — Cerebral structural developmental anomalies
LA05.7 — Brain cystic malformations
8D67 — Intracranial arachnoid cyst
ICD-11 8D67 — Intracranial arachnoid cyst
A fluid filled cavity within the arachnoid membrane which may be congenital or acquired. Acquired causes include trauma, infection and surgery. The most common site is the middle cranial fossa. Factors that influence whether the cyst causes symptoms include its size and location. Symptoms if present may include headache, dizziness, nausea and vomiting, seizures, developmental delay
The diagnosis includes nothing.
The diagnosis excludes nothing.
It has no clarifying diagnoses.
The diagnosis is coded elsewhere: