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F03 ICD-10-CA code: Unspecified dementia

F03 is the ICD-10-CA code for “Unspecified dementia” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

F03

Unspecified dementia

ICD-10-CA · Canada

Index terms

Entries in CIHI’s alphabetical index that lead to F03. Searching the index by the condition the note names is how coders reach this code.

  • Presbyophrenia
  • Paranoia, senile
  • Depression, senile
  • Melancholia, senile
  • Presenile, dementia
  • Dementia (persisting)
  • Paranoid, state, senile
  • Paranoid, dementia (senile)
  • Paranoid, psychosis, senile
  • State (of), paranoid, senile
  • Dementia (persisting), senile
  • Dementia (persisting), old age
  • Psychosis, psychotic, presenile
  • Dementia (persisting), presenile
  • Psychosis, psychotic, senile NEC
  • Reaction, paranoid (acute), senile
  • Senile, senility, with, psychosis NEC
  • Psychosis, psychotic, paranoid, senile
  • Senile, senility, with, mental changes NEC
  • Dementia (persisting), primary degenerative
  • Psychosis, psychotic, affective, senile NEC
  • Psychosis, psychotic, presbyophrenic (type)
  • Dementia (persisting), degenerative (primary)
  • Dementia (persisting), in (due to), unknown etiology
  • Psychosis, psychotic, senile NEC, simple deterioration
  • State (of), psychotic, organic, senile or presenile NEC
  • Dementia (persisting), in (due to), multiple, etiologies
  • Dementia (persisting), senile, depressed or paranoid type
  • Psychosis, psychotic, senile NEC, depressed or paranoid type
  • Psychosis, psychotic, due to or associated with, senile dementia
  • Psychosis, psychotic, due to or associated with, presenile dementia
  • Disorder (of), mental (or behavioral) (nonpsychotic), presenile, psychotic
  • Disorder (of), mental (or behavioral) (nonpsychotic), senile, psychotic NEC

Notes for F03

As CIHI prints them, with any note F03 takes from the headings above it.

Includes

  • Presenile:• dementia NOS• psychosis NOSPrimary degenerative dementia NOSPsychosis NOSSenile dementia:• NOS• depressed or paranoid type
  • Disorders of psychological developmentFrom Chapter 5: Mental and behavioural disorders (F00-F99)

Use additional code

Add a code for this detail when the note documents it.

Excludes

Conditions classified elsewhere.

  • Senility NOS (R54)
  • Symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)From Chapter 5: Mental and behavioural disorders (F00-F99)

Note

  • This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.Dementia (F00-F03) is a syndrome due to disease of the brain, usually of a chronic or progressive nature, in which there is disturbance of multiple higher cortical functions, including memory, thinking, orientation, comprehension, calculation, learning capacity, language, and judgement. Consciousness is not clouded. The impairments of cognitive function are commonly accompanied, and occasionally preceded, by deterioration in emotional control, social behaviour, or motivation. This syndrome occurs in Alzheimer's disease, in cerebrovascular disease, and in other conditions primarily or secondarily affecting the brain.From F00-F09 Organic, including symptomatic, mental disorders

Where F03 sits

  1. 1ChapterChapter 5: Mental and behavioural disorders (F00-F99)
  2. 2Block F00-F09Organic, including symptomatic, mental disorders
  3. 3Valid code F03Unspecified dementia

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See F03 in the CIHI source

Frequently asked questions

What does ICD-10-CA code F03 mean?

F03 is the ICD-10-CA code for “Unspecified dementia” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is F03 in ICD-10-CA?

F03 sits under F00-F09 Organic, including symptomatic, mental disorders, within Chapter 5: Mental and behavioural disorders (F00-F99).

What coding notes apply to F03?

ICD-10-CA lists Includes, Use additional code, Excludes, Note notes for F03, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside F03

F00Dementia in Alzheimer's diseaseF01Vascular dementiaF02Dementia in other diseases classified elsewhereF04Organic amnesic syndrome, not induced by alcohol and other psychoactive substancesF05Delirium, not induced by alcohol and other psychoactive substancesF06Other mental disorders due to brain damage and dysfunction and to physical diseaseF07Personality and behavioural disorders due to brain disease, damage and dysfunctionF09Unspecified organic or symptomatic mental disorder