Specific code 2009 ICD-9-CM Diagnosis Code 348.4
Compression of brain
  • ICD-9-CM 348.4 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 348.4 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2009 version of ICD-9-CM 348.4.
  • More recent version(s) of ICD-9-CM 348.4: 2010 2011 2012 2013 2014.
Disease Synonyms
  • Arnold Chiari Type 1
  • Arnold Chiari type I
  • Brain compression
  • Brain compression due to focal lesion
  • Brain stem compression
  • Brain stem herniation
  • Cerebellar pressure cone
  • Cerebral herniation
  • Cerebral herniation tonsillar, into foramen magnum
  • Chiari malformation type I
  • Compression of brain due to focal lesion
  • Hernia of cerebellar tonsil into foramen magnum (disorder)
  • Herniation brain stem
  • Herniation cerebral
  • Herniation tonsillar, into foramen magnum
  • Herniation under falx cerebri
  • Intracerebral hemorrhage w brain compression
  • Intracerebral hemorrhage with brain compression
  • Intracerebral hemorrhage, coma
  • Intracerebral hemorrhage, w coma and brain compression
  • Nontraumatic subarachnoid hemorrhage with brain compression (disorder)
  • Nontraumatic subarachnoid hemorrhage with coma and brain compression (disorder)
  • Nontraumatic subdural hematoma with brain compression (disorder)
  • Nontraumatic subdural hematoma with brain compression and coma (disorder)
  • Posterior fossa compression syndrome
  • Spontaneous cerebral hemorrhage with coma and compression of brain (disorder)
  • Spontaneous cerebral hemorrhage with compression of brain (disorder)
  • Subarachnoid hemorrhage, non traumatic w brain compression
  • Subarachnoid hemorrhage, non traumatic w coma and brain compression
  • Subarachnoid hemorrhage, with brain compression
  • Subarachnoid hemorrhage, with coma
  • Subdural hematoma, nontraumatic w brain compression
  • Subdural hematoma, nontraumatic w coma and brain compression
  • Subdural hematoma, with brain compression
  • Subdural hematoma, with coma
Applies To
  • Compression brain (stem)
  • Herniation brain (stem)
  • Posterior fossa compression syndrome
Convert to ICD-10-CM: 348.4 converts directly to:
  • 2014 ICD-10-CM G93.5 Compression of brain
ICD-9-CM Volume 2 Index entries containing back-references to 348.4:
  • Arnold-Chiari obstruction or syndrome (see also Spina bifida) 741.0
    • type I 348.4
  • Chiari's
    • malformation
      • type I 348.4
      • type II (see also Spina bifida) 741.0
      • type III 742.0
      • type IV 742.2
  • Compression
    • brain (stem) 348.4
      • due to
        • contusion, brain - see Contusion, brain
        • injury NEC - see also Hemorrhage, brain, traumatic
          • birth - see Birth, injury, brain
        • laceration, brain - see Laceration, brain
      • osteopathic 739.0
  • Hernia, hernial (acquired) (recurrent) 553.9
    • brain 348.4
  • Herniation - see also Hernia
    • brain (stem) 348.4
    • cerebral 348.4
  • Malformation (congenital) - see also Anomaly
    • Chiari
      • type I 348.4
      • type II (see also Spina bifida) 741.0
      • type III 742.0
      • type IV 742.2
  • Pressure
    • brain 348.4
    • cone, tentorial 348.4
  • Syndrome - see also Disease
    • foramen magnum 348.4
    • posterior
      • cervical sympathetic 723.2
      • fossa compression 348.4
      • inferior cerebellar artery (see also Disease, cerebrovascular, acute) 436
      • reversible encephalopathy (PRES) 348.39
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 348.4 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2009 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.