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F02 ⚠ Non-billable

Dementia in other diseases classified elsewhere

ICD-10-CM · FY2026 · Mental, Behavioral and Neurodevelopmental Disorders

Code
F02
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Mental, Behavioral and Neurodevelopmental Disorders
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Includes
  • Major neurocognitive disorder in other diseases classified elsewhere
Excludes1 — never code together
  • mild neurocognitive disorder due to known physiological condition with or without behavioral disturbance (F06.7-)
Excludes2 — not included here, but may code together
  • dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97)
  • vascular dementia (F01.5-, F01.A-, F01.B-, F01.C-)
Code first
  • the underlying physiological condition, such as:
  • Alzheimer's (G30.-)
  • cerebral lipidosis (E75.4)
  • Creutzfeldt-Jakob disease (A81.0-)
  • epilepsy and recurrent seizures (G40.-)
  • hepatolenticular degeneration (E83.01)
  • human immunodeficiency virus [HIV] disease (B20)
  • Huntington's disease (G10)
  • hypercalcemia (E83.52)
  • hypothyroidism, acquired (E00-E03.-)
  • intoxications (T36-T65)
  • Jakob-Creutzfeldt disease (A81.0-)
  • multiple sclerosis (G35-)
  • neurocognitive disorder with Lewy bodies (G31.83)
  • neurosyphilis (A52.17)
  • niacin deficiency [pellagra] (E52)
  • other frontotemporal neurocognitive disorder (G31.09)
  • Parkinson's disease (G20.-)
  • Pick's disease (G31.01)
  • polyarteritis nodosa (M30.0)
  • prion disease (A81.9)
  • systemic lupus erythematosus (M32.-)
  • traumatic brain injury (S06.-)
  • trypanosomiasis (B56.-, B57.-)
  • vitamin B deficiency (E53.8)

Frequently asked questions

What is ICD-10 code F02?
ICD-10-CM code F02 represents Dementia in other diseases classified elsewhere. It is a non-billable header code requiring a more specific subcategory in the Mental, Behavioral and Neurodevelopmental Disorders chapter, effective October 1, 2025 – September 30, 2026.
Is F02 billable?
No. F02 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is F02 in?
F02 belongs to the Mental, Behavioral and Neurodevelopmental Disorders chapter (F01–F99) of ICD-10-CM.

Related codes in the F02 category

F02.8 Dementia in other diseases classified elsewhere, unspecified severity Non-billable F02.A Dementia in other diseases classified elsewhere, mild Non-billable F02.B Dementia in other diseases classified elsewhere, moderate Non-billable F02.C Dementia in other diseases classified elsewhere, severe Non-billable F02.80 Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety Billable F02.81 Dementia in other diseases classified elsewhere, unspecified severity, with behavioral disturbance Non-billable F02.82 Dementia in other diseases classified elsewhere, unspecified severity, with psychotic disturbance Billable F02.83 Dementia in other diseases classified elsewhere, unspecified severity, with mood disturbance Billable

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