G31.8 - Other specified degenerative diseases of nervous system
G31.84 - Mild cognitive impairment, so stated
Excludes 1:
-age related cognitive decline R41.81)
-altered mental status R41.82)
-cerebral degeneration G31.9)
-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 memory disturbance F06.8)
-neurologic neglect syndrome R41.4)
-personality change, nonpsychotic F68.8)