D56.1Beta thalassaemia
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
- Bệnh thalassaemia [tan máu bẩm sinh] thể beta
- Additional WHO coding guidance
- Cooley anaemia Severe beta thalassaemia Thalassaemia: intermedia major
Related D56 codes
D56
Thalassaemia
D56.0
Primary diagnosis candidate
Alpha thalassaemia
D56.2
Primary diagnosis candidate
Delta-beta thalassaemia
D56.3
Primary diagnosis candidate
Thalassaemia trait
D56.4
Primary diagnosis candidate
Hereditary persistence of fetal haemoglobin [HPFH]
D56.8
Primary diagnosis candidate
Other thalassaemias
D56.9
Primary diagnosis candidate
Thalassaemia, 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.
