G31 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Other degenerative diseases of nervous system, not elsewhere classified.
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Code, if applicable, for codes G31.0-G31.83, G31.85-G31.9, to identify:
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-)
Reye's syndrome (G93.7)
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