F03

Non-Billable

ChapterF01–F99

Rankcategory

Official Description

Unspecified dementia

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 5: Mental, Behavioral and Neurodevelopmental Disorders (F01-F99).

CH5 Parent Instructions

Includes

disorders of psychological development

Excludes2(Not included here)

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Instructional Notes

Includes

Major neurocognitive disorder NOS
Presenile dementia NOS
Presenile psychosis NOS
Primary degenerative dementia NOS
Senile dementia NOS
Senile dementia depressed or paranoid type
Senile psychosis NOS

Excludes2(Not included here)

dementia with delirium or acute confusional state (F05)
mild memory disturbance due to known physiological condition (F06.8)

Clinical Hierarchy

CH5Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

F01-F09Mental disorders due to known physiological conditions (F01-F09)

F03Unspecified dementia

F03.9Unspecified dementia, unspecified severity

F03.AUnspecified dementia, mild

F03.BUnspecified dementia, moderate

F03.CUnspecified dementia, severe

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to F03:

chapterCH5

Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to F03. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths

Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)25 unique routes

Direct index entry→F03

in (due to)(2 variants)

multiple

etiologies→F03

unknown etiology→F03

mild→F03(9 variants)

with(8 variants)

aberrant motor behavior (exit-seeking) (pacing) (restlessness) (rocking)→F03

agitation→F03

anxiety→F03

behavioral disturbances (sexual disinhibition) (sleep disturbance) (social disinhibition)→F03(2 variants)

specified NEC→F03

mood disturbance (anhedonia) (apathy) (depression)→F03

psychotic disturbance (delusional state) (hallucinations) (paranoia) (suspiciousness)→F03

verbal or physical behaviors (anger) (aggression) (combativeness) (profanity) (shouting) (threatening) (violence)→F03

moderate→F03(9 variants)

with(8 variants)

aberrant motor behavior (exit-seeking) (pacing) (restlessness) (rocking)→F03

agitation→F03

anxiety→F03

behavioral disturbances (sexual disinhibition) (sleep disturbance) (social disinhibition)→F03(2 variants)

specified NEC→F03

mood disturbance (anhedonia) (apathy) (depression)→F03

psychotic disturbance (delusional state) (hallucinations) (paranoia) (suspiciousness)→F03

verbal or physical behaviors (anger) (aggression) (combativeness) (profanity) (shouting) (threatening) (violence)→F03

old age (senile)→F03

presenile→F03

primary degenerative→F03

senile→F03

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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