D57.2Double heterozygous sickling disorders
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 III
- Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- Group D55-D59
- Haemolytic anaemias Thiếu máu tan máu
- Official Vietnamese name
- Rối loạn dị hợp tử kép của thiếu máu hồng cầu hình liềm
- Additional WHO coding guidance
- Disease: Hb-SC Hb-SD Hb-SE sickle-cell thalassaemia
Related D57 codes
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.