VITiếng Việt
ICD-10 Vietnam

F84.1Atypical autism

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 phổ tự kỷ không điển hình
Additional WHO coding guidance
A type of pervasive developmental disorder that differs from childhood autism either in age of onset or in failing to fulfil all three sets of diagnostic criteria. This subcategory should be used when there is abnormal and impaired development that is present only after age three years, and a lack of sufficient demonstrable abnormalities in one or two of the three areas of psychopathology required for the diagnosis of autism (namely, reciprocal social interactions, communication, and restricted, stereotyped, repetitive behaviour) in spite of characteristic abnormalities in the other area(s). Atypical autism arises most often in profoundly retarded individuals

Related F84 codes

F84 Pervasive developmental disorders F84.0 Primary diagnosis candidate Childhood autism F84.2 Primary diagnosis candidate Rett syndrome F84.3 Primary diagnosis candidate Other childhood disintegrative disorder F84.4 Primary diagnosis candidate Overactive disorder associated with mental retardation and stereotyped movements F84.5 Primary diagnosis candidate Hội chứng Asperger F84.8 Primary diagnosis candidate Other pervasive developmental disorders F84.9 Primary diagnosis candidate Pervasive developmental disorder, 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.