F80.1Expressive language disorder
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 F80-F89
- Disorders of psychological development
- Official Vietnamese name
- Rối loạn ngôn ngữ diễn đạt
- Additional WHO coding guidance
- A specific developmental disorder in which the child's ability to use expressive spoken language is markedly below the appropriate level for its mental age, but in which language comprehension is within normal limits. There may or may not be abnormalities in articulation. Developmental dysphasia or aphasia, expressive type Excl.: acquired aphasia with epilepsy [Landau- Kleffner] (F80.3) dysphasia and aphasia: NOS (R47.0) developmental, receptive type (F80.2) elective mutism (F94.0) mental retardation (F70-F79) pervasive developmental disorders (F84.-)
Related F80 codes
F80
Specific developmental disorders of speech and language
F80.0
Primary diagnosis candidate
Specific speech articulation disorder
F80.2
Primary diagnosis candidate
Receptive language disorder
F80.3
Primary diagnosis candidate
Acquired aphasia with epilepsy [Landau-Kleffner]
F80.8
Primary diagnosis candidate
Other developmental disorders of speech and language
F80.9
Primary diagnosis candidate
Developmental disorder of speech and language, 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.
