VITiếng Việt
ICD-10 Vietnam

F81.2Specific disorder of arithmetical skills

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 cụ thể về kỹ năng tính toán
Additional WHO coding guidance
Involves a specific impairment in arithmetical skills that is not solely explicable on the basis of general mental retardation or of inadequate schooling. The deficit concerns mastery of basic computational skills of addition, subtraction, multiplication, and division rather than of the more abstract mathematical skills involved in algebra, trigonometry, geometry, or calculus. Developmental: acalculia arithmetical disorder Gerstmann syndrome Excl.: acalculia NOS (R48.8) arithmetical difficulties: associated with a reading or spelling disorder (F81.3) due to inadequate teaching (Z55.8)

Related F81 codes

F81 Specific developmental disorders of scholastic skills F81.0 Primary diagnosis candidate Specific reading disorder F81.1 Primary diagnosis candidate Specific spelling disorder F81.3 Primary diagnosis candidate Mixed disorder of scholastic skills F81.8 Primary diagnosis candidate Other developmental disorders of scholastic skills F81.9 Primary diagnosis candidate Developmental disorder of scholastic skills, 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.