U.S. ICD-10-CM · FY 2027

F02 ICD-10-CM Code: Dementia in other diseases classified elsewhere

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

F02

Dementia in other diseases classified elsewhere

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where F02 sits

  1. 1

    Chapter 5

    Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

  2. 2

    Section

    Mental disorders due to known physiological conditions (F01-F09)

  3. 3

    Category F02

    Dementia in other diseases classified elsewhere

  4. 4

    Code F02

    Dementia in other diseases classified elsewhere

More specific choices

Codes under F02

F02 is a non-billable category. Choose the child code that best matches the documented diagnosis.

F02.8

Dementia in other diseases classified elsewhere, unspecified severity

F02.A

Dementia in other diseases classified elsewhere, mild

F02.B

Dementia in other diseases classified elsewhere, moderate

F02.C

Dementia in other diseases classified elsewhere, severe

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for F02.

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)

Use additional code

No “use additional code” instruction is listed for F02.

Excludes1

Conditions that should not be reported together with this code.

  • mild neurocognitive disorder due to known physiological condition with or without behavioral disturbance (F06.7-)

Excludes2

Conditions not included here that may be reported separately when present.

  • dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97)
  • vascular dementia (F01.5-, F01.A-, F01.B-, F01.C-)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code F02 mean?

F02 is the FY 2027 U.S. ICD-10-CM code for “Dementia in other diseases classified elsewhere.”

Is F02 a billable or specific ICD-10-CM code?

No. F02 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is F02 located in ICD-10-CM?

F02 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Mental disorders due to known physiological conditions (F01-F09) (F01–F09), under category F02, Dementia in other diseases classified elsewhere.

What coding notes are listed for F02?

No inclusion terms are listed for F02 in this reference record. Code-first instructions: 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). Excludes1 notes: mild neurocognitive disorder due to known physiological condition with or without behavioral disturbance (F06.7-). Excludes2 notes: dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97); vascular dementia (F01.5-, F01.A-, F01.B-, F01.C-).

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