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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Other Disorders Of The Central Nervous System 340-349 > Other Conditions Of Brain 348.* >

2008 ICD-9-CM Diagnosis 348.0

Cerebral cysts

 On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.

The 2009 version of ICD-9-CM 348.0 can be accessed here.

  • A fluid filled sac within the cerebrum. It is can be congenital, trauma related or secondary to another medical condition for example an infarction.
  • Intracranial or spinal cavities containing a cerebrospinal-like fluid, the wall of which is composed of arachnoidal cells. They are most often developmental or related to trauma. Intracranial arachnoid cysts usually occur adjacent to arachnoidal cistern and may present with HYDROCEPHALUS; HEADACHE; SEIZURES; and focal neurologic signs. Spinal arachnoid cysts may be extradural, intradural, or perineural and tend to present with signs and symptoms indicative of a RADICULOPATHY. (From Joynt, Clinical Neurology, 1994, Ch44, pp105-115)
  • 348.0 is a specific code that can be used to specify a diagnosis
  • 348.0 contains 18 index entries
  • View the ICD-9-CM Volume 1 348.* hierarchy

348.0 also known as:

  • Arachnoid cyst
  • Porencephalic cyst
  • Porencephaly, acquired
  • Pseudoporencephaly


Index entries containing 348.0:

Cyst (mucus) (retention) (serous) (simple)
  • arachnoid, brain 348.0
  • brain 348.0
    • congenital 742.4
    • hydatid (see also Echinococcus) 122.9
    • third ventricle (colloid) 742.4
  • cavum septi pellucidi NEC 348.0
  • choroid plexus 348.0
  • corpora quadrigemina 348.0
  • cranial meninges 348.0
  • dura (cerebral) 348.0
  • membrane, brain 348.0
  • meninges (cerebral) 348.0
  • neuroepithelial ventricle 348.0
  • porencephalic 742.4
    • acquired 348.0
  • subarachnoid 348.0
  • subdural (cerebral) 348.0
  • ventricle, neuroepithelial 348.0
Degeneration, degenerative
  • brain (cortical) (progressive) 331.9
    • cystic 348.0
Porencephaly (congenital) (developmental) (true) 742.4
  • acquired 348.0
  • nondevelopmental 348.0
Pseudoporencephaly 348.0