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The three main irreversible causes are Alzheimer's disease, dementia with Lewy bodies, and multi-infarct dementia (also called vascular dementia).

Q: What are the main irreversible causes of dementia?
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The three main irreversible causes are Alzheimer's disease, dementia with Lewy bodies, and multi-infarct dementia (also called vascular dementia).

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Lewy body dementia (LBD) is not a single disorder but a spectrum of disorders involving disturbances of movement, cognition, behavior, sleep and autonomic function.

When diagnosing Lewy body dementias, please use the following ICD-9 code combinations:

* dementia with Lewy bodies (DLB)

331.82 - "Dementia with Lewy bodies"

294.1x - "Dementia" with the 'x' determined by presence ("1") or absence ("0") of behavioral disturbance.

(NOTE: Not all insurance carriers process 294.1x codes the same way. Confer with a billing expert before using this code.)

* Parkinson's disease dementia (PDD)

331.82 - "DLB, parkinsonism with dementia, Lewy body dementia, Lewy body disease"

332.0 - "Parkinson's disease"

294.1x - "Dementia" with the 'x' determined by presence ("1") or absence ("0") of behavioral disturbance.

(NOTE: Not all insurance carriers process 294.1x codes the same way. Confer with a billing expert before using this code.)

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The condition was first described by Frederick Lewy in 1941 when he described Lewy bodies, which are abnormal inclusions in the cytoplasm (components of a cell outside the nucleus) of cells found in patients who had Parkinson's disease

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Lewy body dementia (LBD) is not a single disorder but a spectrum of disorders involving disturbances of movement, cognition, behavior, sleep and autonomic function.

When diagnosing Lewy body dementias, please use the following ICD-9 code combinations:

* dementia with Lewy bodies (DLB)

331.82 - "Dementia with Lewy bodies"

294.1x - "Dementia" with the 'x' determined by presence ("1") or absence ("0") of behavioral disturbance.

(NOTE: Not all insurance carriers process 294.1x codes the same way. Confer with a billing expert before using this code.)

* Parkinson's disease dementia (PDD)

331.82 - "DLB, parkinsonism with dementia, Lewy body dementia, Lewy body disease"

332.0 - "Parkinson's disease"

294.1x - "Dementia" with the 'x' determined by presence ("1") or absence ("0") of behavioral disturbance.

(NOTE: Not all insurance carriers process 294.1x codes the same way. Confer with a billing expert before using this code.)

More at Link

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