2006 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 330-338 > Other Cerebral Degenerations 331.* > 2006 ICD-9-CM Diagnosis 331.3 Communicating hydrocephalus View the most recent version of ICD-9-CM 331.3 331.3 is a specific code that can be used to specify a diagnosis 331.3 contains 5 index entries View the ICD-9-CM Volume 1 331.* hierarchy 331.3 Excludes congenital hydrocephalus (741.0, 742.3)  Index entries containing 331.3: Block foramen Magendie (acquired) 331.3 congenital 742.3 with spina bifida (see also Spina bifida) 741.0 Hydrocephalus (acquired) (external) (internal) (malignant) (noncommunicating) (obstructive) (recurrent) 331.4 communicating 331.3 foramen Magendie block (acquired) 331.3 congenital 742.3 with spina bifida (see also Spina bifida) 741.0 Syndrome - see also Disease malabsorption 579.9 spinal fluid 331.3 spinal cord injury - see also Injury, spinal, by site fluid malabsorption (acquired) 331.3