6D85.4
Dementia due to multiple sclerosis
Demência devida à esclerose múltipla
CategoryDefinition
Dementia due to multiple sclerosis is a neurodegenerative disease due to the cerebral effects of multiple sclerosis, a demyelinating disease. Onset of symptoms is insidious and not secondary to the functional impairment attributable to the primary disease (i.e., multiple sclerosis). Cognitive impairments vary according to the location of demyelination but typically include deficits in processing speed, memory, attention, and aspects of executive functioning.
Coding Note
This category should never be used in primary tabulation. The codes are provided for use as supplementary or additional codes when it is desired to identify the presence of dementia in diseases classified elsewhere.
When dementia is due to multiple aetiologies, code all that apply.
Diagnostic Criteria
- All diagnostic requirements for Dementia are met.
- Dementia is presumed to be attributable to the cerebral effects of underlying Multiple Sclerosis, a demyelinating disease, as demonstrated by neuropsychological test data, neuroimaging data, medical tests, and/or clinical history. Cognitive symptoms are not primarily due to associated physiological or functional effects of the underlying disease (e.g., fatigue, motoric limitations).
- Onset of symptoms is often insidious but may progress in a stepwise fashion in accordance with the underlying disease course.
- Neurocognitive impairments vary according to the location of demyelination but typically include deficits in processing speed, memory, attention, and aspects of executive functioning.
Note: A diagnosis of 8A40 Multiple Sclerosis should also be assigned.
Index Terms
Dementia due to multiple sclerosis