Alpha thalassaemia

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Alpha-thalassemia is an inherited haemoglobinopathy characterised by impaired synthesis of alpha-globin chains leading to a variable clinical picture depending on the number of affected alleles, and encompassing the alpha thalassaemia trait, haemoglobin H disease (HbH) and Bart's hydrops fetalis.

exclusions

• Hydrops fetalis due to haemolytic disease  (KA85)

sections/codes in this section (3A50.0-3A50.0)

• Mild alpha thalassaemia diseases  (3A50.00)
• Thalassaemic alpha-chain variants  (3A50.01)
• Haemoglobin H disease (– α/– – included)  (3A50.02)
• Homozygous or compound heterozygous alpha0 thalassaemia  (3A50.03)
• Other specified alpha thalassaemia  (3A50.0Y)
• Alpha thalassaemia, unspecified  (3A50.0Z)

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