2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Hereditary And Degenerative Diseases Of The Central Nervous System 330-337 > Other Cerebral Degenerations 331.* >  2008 ICD-9-CM Diagnosis 331.4
Obstructive hydrocephalus 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 Therefore, this code may be out of date.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 331.4 can be accessed here. - 331.4 is a specific code that can be used to specify a diagnosis
- 331.4 contains 8 index entries
- View the ICD-9-CM Volume 1 331.* hierarchy
331.4 also known as:- Acquired hydrocephalus NOS
331.4 excludes: - congenital hydrocephalus (742.3)
- idiopathic normal pressure hydrocephalus (331.5)
- normal pressure hydrocephalus (331.5)
- spina bifida with hydrocephalus (741.0)
Index entries containing 331.4:- Hydrocephalus (acquired) (external) (internal) (malignant) (noncommunicating) (obstructive) (recurrent)
 331.4- aqueduct of Sylvius stricture 742.3
- with spina bifida (see also Spina bifida) 741.0
- chronic 742.3
- with spina bifida (see also Spina bifida) 741.0
- communicating 331.3
- congenital (external) (internal) 742.3
- with spina bifida (see also Spina bifida) 741.0
- due to
- stricture of aqueduct of Sylvius 742.3
- with spina bifida (see also Spina bifida) 741.0
- toxoplasmosis (congenital) 771.2
- fetal affecting management of pregnancy 655.0
- foramen Magendie block (acquired) 331.3
- congenital 742.3
- with spina bifida (see also Spina bifida) 741.0
- newborn 742.3
- with spina bifida (see also Spina bifida) 741.0
- normal pressure 331.5
- otitic 348.2
- syphilitic, congenital 090.49
- tuberculous (see also Tuberculosis) 013.8
Hydrops 782.3- meningeal NEC 331.4
Macrohydrocephalus (see also Hydrocephalus) 331.4
Obstruction, obstructed, obstructive- aqueduct of Sylvius 331.4
- congenital 742.3
- with spina bifida (see also Spina bifida) 741.0
Occlusion- aqueduct of Sylvius 331.4
- congenital 742.3
- with spina bifida (see also Spina bifida) 741.0
- ventricle (brain) NEC 331.4
Stenosis (cicatricial) - see also Stricture- aqueduct of Sylvius (congenital) 742.3
- acquired 331.4
Stricture (see also Stenosis) 799.89- aqueduct of Sylvius (congenital) 742.3
- acquired 331.4
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