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2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Organic Psychotic Conditions 290-294 > Other Organic Psychotic Conditions (Chronic) 294.* >

2006 ICD-9-CM Diagnosis 294.1

Dementia in conditions classified elsewhere

View the most recent version of ICD-9-CM 294.1

  • A disabling degenerative disease of the nervous system occurring in middle-aged or older persons and characterized by dementia and failure of memory for recent events, followed by total incapacitation and death. Types of the Alzheimer syndrome are differentiated by the age of onset and genetic characteristics. The early onset form (the mean age of the onset of symptoms between the ages of 40 and 60 years) and the late onset form (the onset of symptoms after the age of 60 years). Three forms are identified: AD-1, AD-2, AD-3. Some of the clinical characteristics of the Alzheimer syndrome are similar to those of the Pick syndrome.
  • A degenerative disease of the BRAIN characterized by the insidious onset of DEMENTIA. Impairment of MEMORY, judgment, attention span, and problem solving skills are followed by severe APRAXIAS and a global loss of cognitive abilities. The condition primarily occurs after age 60, and is marked pathologically by severe cortical atrophy and the triad of SENILE PLAQUES; NEUROFIBRILLARY TANGLES; and NEUROPIL THREADS.
  • A progressive, neurodegenerative disease characterized by loss of function and death of nerve cells in several areas of the brain leading to loss of cognitive function such as memory and language.
  • 294.1 is a non-specific code that cannot be used to specify a diagnosis
  • View the ICD-9-CM Volume 1 294.* hierarchy

Code first any underlying physical condition as:

  • dementia in:
    • Alzheimer's disease (331.0)
    • cerebral lipidoses (330.1)
    • dementia with Lewy bodies (331.82)
    • dementia with Parkinsonism (331.82)
    • epilepsy (345.0-345.9)
    • frontal dementia (331.19)
    • frontotemporal dementia (331.19)
    • general paresis [syphilis] (094.1)
    • hepatolenticular degeneration (275.1)
    • Huntington's chorea (333.4)
    • Jakob-Creutzfeldt disease (046.1)
    • multiple sclerosis (340)
    • Pick's disease of the brain (331.11)
    • polyarteritis nodosa (446.0)
    • syphilis (094.1)

Alternate Terminology

  • Dementia of the Alzheimer's type

294.1 Excludes