 G31 |
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Other degenerative diseases of nervous system, not elsewhere classified  |
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| UseAdditionalCode |
code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:
dementia with anxiety (F02.84, F02.A4, F02.B4, F02.C4)
dementia with behavioral disturbance (F02.81-, F02.A1-, F02.B1-, F02.C1-)
dementia with mood disturbance (F02.83, F02.A3, F02.B3, F02.C3)
dementia with psychotic disturbance (F02.82, F02.A2, F02.B2, F02.C2)
dementia without behavioral disturbance (F02.80, F02.A0, F02.B0, F02.C0)
mild neurocognitive disorder due to known physiological condition (F06.7-)
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| Excludes2 |
Reye's syndrome (G93.7)
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| G31.0 |
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Frontotemporal dementia |
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 G31.01 |
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Pick's disease |
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| Primary progressive aphasia | | Progressive isolated aphasia |
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| G31.09 |
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Other frontotemporal neurocognitive disorder |
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| Frontal dementia |
| UseAdditionalCode |
code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
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| G31.1 |
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Senile degeneration of brain, not elsewhere classified |
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| Excludes1 |
Alzheimer's disease (G30.-)
senility NOS (R41.81)
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| G31.2 |
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Degeneration of nervous system due to alcohol |
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| Alcoholic cerebellar ataxia | | Alcoholic cerebellar degeneration | | Alcoholic cerebral degeneration | | Alcoholic encephalopathy | | Dysfunction of the autonomic nervous system due to alcohol |
| CodeAlso |
associated alcoholism (F10.-)
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| G31.8 |
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Other specified degenerative diseases of nervous system |
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| G31.80 |
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Leukodystrophy, unspecified |
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| G31.81 |
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Alpers disease |
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| G31.82 |
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Leigh's disease |
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| Subacute necrotizing encephalopathy |
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| G31.83 |
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Neurocognitive disorder with Lewy bodies |
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| Lewy body dementia | | Lewy body disease |
| UseAdditionalCode |
code, if applicable, to identify mild neurocognitive disorders due to known physiological condition (F06.7-)
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| G31.84 |
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Mild cognitive impairment of uncertain or unknown etiology |
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| Mild cognitive disorder NOS | | Mild neurocognitive disorder of uncertain or unknown etiology |
| UseAdditionalCode |
code to identify presence of:
alcohol abuse and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)
history of tobacco dependence (Z87.891)
hypertension (I10-I1A)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)
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| Excludes1 |
age related cognitive decline (R41.81)
altered mental status (R41.82)
cerebral degeneration (G31.9)
cerebrovascular diseases (I60-I69)
change in mental status (R41.82)
cognitive deficits following (sequelae of) cerebral hemorrhage or infarction (I69.01-, I69.11-, I69.21-, I69.31-, I69.81-, I69.91-)
cognitive impairment due to intracranial or head injury (S06.-)
dementia (F01.-, F02.-, F03)
mild neurocognitive disorder due to a known physiological condition (F06.7-)
neurologic neglect syndrome (R41.4)
personality change, nonpsychotic (F68.8)
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| G31.85 |
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Corticobasal degeneration |
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| G31.86 |
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Alexander disease |
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| G31.89 |
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Other specified degenerative diseases of nervous system |
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| G31.9 |
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Degenerative disease of nervous system, unspecified |
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