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2. ICD-10 Codes
3. Chapter - G00-G99
4. Section - G30-G32
5. Category - G31
6. G31.84

G31.84 - Mild cognitive impairment of uncertain or unknown etiology

• Applicable to Mild cognitive impairment of uncertain or unknown etiology
• The 2025 edition of ICD10-CM G31.84 became effective on October 1, 2024.
• This is the American ICD10-CM version of G31.84 - other international versions of ICD10 G31.84 may differ.
• G31.84 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Code Additional Code:

• 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)

• Mild cognitive disorder NOS
• Mild neurocognitive disorder of uncertain or unknown etiology

Type 1 Excludes

• 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)

The following codes above G31.84 contain annotation back-references that may be applicable to G31.84:

• Chapter: G00-G99 - Diseases of the nervous system
• Section: G30-G32 - Other degenerative diseases of the nervous system
• Category: G31 - Other degenerative diseases of nervous system, not elsewhere classified

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.