ICD 9 CM Codes

331.0Alzheimer's disease
331.1Frontotemporal dementia
331.2Senile degeneration of brain
331.3Communicating hydrocephalus
331.4Obstructive hydrocephalus
331.5Idiopathic normal pressure hydrocephalus (INPH)
331.6Corticobasal degeneration
331.7Cerebral degeneration in diseases classified elsewhere
331.8Other cerebral degeneration
331.9Cerebral degeneration, unspecified