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ICD10BillableValid for clinical use

ICD-10 Code F02.818: Dementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbance

F02.818 is a billable ICD-10 diagnosis code used to classify Dementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbance in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Mental, Behavioral and Neurodevelopmental disorders (F01-F99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Mental, Behavioral and Neurodevelopmental disorders (F01-F99).

When is it used?

  • May be used when a clinician documents dementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbance in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
5Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
block
F01-F09Mental disorders due to known physiological conditions
category
F02Dementia in other diseases classified elsewhere
category
F02.8Dementia in other diseases classified elsewhere, unspecified severity
category
F02.81Dementia in other diseases classified elsewhere, unspecified severity, with behavioral disturbance
currentF02.81

Official coding notes

Inclusion terms
  • Dementia in other diseases classified elsewhere with sleep disturbance, social disinhibition, or sexual disinhibition
  • Major neurocognitive disorder in other diseases classified elsewhere with sleep disturbance, social disinhibition, or sexual disinhibition
Applicable to
  • code, if applicable, to identify wandering in dementia in conditions classified elsewhere (Z91.83)
Use additional code
  • code, if applicable, to identify wandering in dementia in conditions classified elsewhere (Z91.83)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Coverage-related procedures and services

CPT 96113high
DEVELOPMENTAL TEST ADMINISTRATION (INCLUDING ASSESSMENT OF FINE AND/OR GROSS MOTOR, LANGUAGE, COGNITIVE LEVEL, SOCIAL, MEMORY AND/OR EXECUTIVE FUNCTIONS BY STANDARDIZED DEVELOPMENTAL INSTRUMENTS WHEN PERFORMED), BY PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL, WITH INTERPRETATION AND REPORT; EACH ADDITIONAL 30 MINUTES (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 96112high
DEVELOPMENTAL TEST ADMINISTRATION (INCLUDING ASSESSMENT OF FINE AND/OR GROSS MOTOR, LANGUAGE, COGNITIVE LEVEL, SOCIAL, MEMORY AND/OR EXECUTIVE FUNCTIONS BY STANDARDIZED DEVELOPMENTAL INSTRUMENTS WHEN PERFORMED), BY PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL, WITH INTERPRETATION AND REPORT; FIRST HOUR
Source: CMS coverage guidance
CPT 96105high
ASSESSMENT OF APHASIA (INCLUDES ASSESSMENT OF EXPRESSIVE AND RECEPTIVE SPEECH AND LANGUAGE FUNCTION, LANGUAGE COMPREHENSION, SPEECH PRODUCTION ABILITY, READING, SPELLING, WRITING, EG, BY BOSTON DIAGNOSTIC APHASIA EXAMINATION) WITH INTERPRETATION AND REPORT, PER HOUR
Source: CMS coverage guidance
CPT 90847high
FAMILY PSYCHOTHERAPY (CONJOINT PSYCHOTHERAPY) (WITH PATIENT PRESENT), 50 MINUTES
Source: CMS coverage guidance
CPT 90846high
FAMILY PSYCHOTHERAPY (WITHOUT THE PATIENT PRESENT), 50 MINUTES
Source: CMS coverage guidance
CPT 90853high
GROUP PSYCHOTHERAPY (OTHER THAN OF A MULTIPLE-FAMILY GROUP)
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Dementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbanceDementia in other diseases classified elsewhere, unspecified severity

Frequently asked questions

Code details

CodeF02.818
SystemICD10
Display nameDementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbance
ChapterMental, Behavioral and Neurodevelopmental disorders (F01-F99)
BlockMental disorders due to known physiological conditions

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Dementia(degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)Dementia(degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code F02.818 for Dementia in other diseases classified elsewhere, unspecified severity, with other behavioral disturbance | HealthAssure