F94.0Elective mutism
Code usage status
Primary diagnosis
May be used as the primary diagnosis
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Complete code in the classification
Use when the diagnosis matches and no exclusion applies.
- Chapter V
- Mental and behavioural disorders
- Group F90-F98
- Behavioural and emotional disorders with onset usually occurring in childhood and adolescence
- Official Vietnamese name
- Chứng mất nói chọn lọc
- Additional WHO coding guidance
- Characterized by a marked, emotionally determined selectivity in speaking, such that the child demonstrates a language competence in some situations but fails to speak in other (definable) situations. The disorder is usually associated with marked personality features involving social anxiety, withdrawal, sensitivity, or resistance. Selective mutism Excl.: pervasive developmental disorders (F84.-) schizophrenia (F20.-) specific developmental disorders of speech and language (F80.-) transient mutism as part of separation anxiety in young children (F93.0)
Related F94 codes
F94
Disorders of social functioning with onset specific to childhood and adolescence
F94.1
Primary diagnosis candidate
Reactive attachment disorder of childhood
F94.2
Primary diagnosis candidate
Disinhibited attachment disorder of childhood
F94.8
Primary diagnosis candidate
Other childhood disorders of social functioning
F94.9
Primary diagnosis candidate
Childhood disorder of social functioning, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
