Arachnoid Cyst ICD 9 Code


Billable Medical Code for Cerebral Cysts

Diagnosis Code for Reimbursement Claim: ICD-9-CM 348.0

Code will be replaced by October 2015 and relabeled as ICD-10-CM 348.0.

Known As

Arachnoid cyst is also known as acquired porencephaly (disorder), arachnoid cyst, cerebral cyst, choroid plexus cyst, cyst leptomeningeal traumatic, leptomeningeal cyst traumatic, porencephalic cyst, porencephalic cyst acquired, pseudoporencephaly acquired, and traumatic cyst of leptomeninges (disorder). This applies to arachnoid cyst, porencephalic cyst, porencephaly acquired, and psuedoporencephaly.

Arachnoid Cyst Definition and Symptoms

Arachnoid cysts develop when cerebrospinal fluid is covered with arachnoidal cells and collagen and form in between the brain and the cranial base. Most cysts begin to form during infancy however formation can be delayed. Symptoms include seizures, developmental delays, lethargy, nausea, and headaches.