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ICD11

Diseases of the blood or blood-forming organs (D50–D89)

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Diseases of the blood or blood-forming organs is a chapter in ICD-11 that includes conditions affecting the production, function, and lifespan of blood cells and the organs involved in hematopoiesis, such as bone marrow and the spleen. These disorders may involve red blood cells, white blood cells, platelets, plasma components, or clotting factors, leading to manifestations such as anemia, bleeding tendencies, infections, or thrombotic complications.

This chapter covers both inherited and acquired hematological disorders, ranging from nutritional deficiencies and immune-mediated conditions to complex bone marrow failures and coagulation abnormalities. Accurate classification of these diseases supports appropriate diagnosis, clinical management, and monitoring of disease progression, while also contributing to research, epidemiology, and the development of effective prevention and treatment strategies.

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Frequently asked questions

This chapter includes non-malignant disorders affecting blood cells, bone marrow, and coagulation systems.

It includes anemias, bleeding and clotting disorders, hemoglobinopathies, and bone marrow failure syndromes.

Yes. Both inherited conditions such as sickle cell disease and acquired disorders like iron-deficiency anemia are included.

ICD-11 provides clearer definitions and improved differentiation between similar blood disorders.

No. Malignant blood disorders are classified under the Neoplasms chapter.

It supports appropriate diagnosis, treatment, research, and healthcare system planning.

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