1. The development of multiple cognitive deficits manifested by both

   1. memory impairment (impaired ability to learn new information or to recall previously learned information)
   2. one (or more) of the following cognitive disturbances:
      1. aphasia (language disturbance)
      2. apraxia (impaired ability to carry out motor activities despite intact motor function)
      3. agnosia (failure to recognize or identify objects despite intact sensory function)
      4. disturbance in executive functioning (i.e., planning, organizing, sequencing, abstracting)
2. The cognitive deficits in Criteria A1 and A2 each cause significant impairment in social or occupational functioning and represent a significant decline from a previous level of functioning.
3. There is evidence from the history, physical examination, or laboratory findings that the disturbance has more than one etiology (e.g., head trauma plus chronic alcohol use, dementia of the Alzheimer's type with the subsequent development of vascular dementia).
4. The deficits do not occur exclusively during the course of a delirium.

Coding note: Use multiple codes based on specific dementias and specific etiologies e.g., Dementia of the Alzheimer's type, with late onset, without behavioral disturbance; Vascular dementia, uncomplicated.

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