Chapter 3: Diseases of the Blood or Blood-Forming Organs
ICD-11 codes 3A00-3C9Z
Covers anemias (nutritional, hemolytic, aplastic), coagulation defects, purpura, and other disorders of blood and blood-forming organs. ICD-11 separates blood diseases from immune disorders, providing clearer classification for hematological conditions.
3A00-3A03
Nutritional or metabolic anaemias
3A00-3A9Z
Anaemias or other erythrocyte disorders
3A50Thalassaemias
3A51Sickle cell disorders or other haemoglobinopathies
3A70Aplastic anaemia
3A71Anaemia due to chronic disease
3A72Sideroblastic anaemia
3A73Congenital dyserythropoietic anaemia
3A90Anaemia due to acute disease
3A91Congenital methaemoglobinaemia
3A92Hereditary methaemoglobinaemia
3A93Acquired methaemoglobinaemia
3A94Acute posthaemorrhagic anaemia
3A9YOther specified anaemias or erythrocyte disorders
3A9ZAnaemias or other erythrocyte disorders, unspecified
3A10-3A1Y
Congenital haemolytic anaemia
3A10-3A4Z
Haemolytic anaemias
3A20-3A2Z
Acquired haemolytic anaemia
3A60-3A6Z
Pure red cell aplasia
3A80-3A8Z
Polycythaemia
3B10-3B1Z
Congenital or constitutional haemorrhagic condition
3B10Hereditary factor VIII deficiency
3B11Hereditary factor IX deficiency
3B12Von Willebrand disease
3B13Haemophilia C
3B14Other inherited coagulation factor deficiency with bleeding tendency
3B15Inherited coagulation factor deficiency without bleeding tendency
3B1ZCongenital or constitutional haemorrhagic condition, unspecified
3B10-3B4Z
Coagulation defects
3B10-3B6Z
Coagulation defects, purpura or other haemorrhagic or related conditions
3B60Non-thrombocytopenic purpura
3B61Thrombophilia
3B62Qualitative platelet defects
3B63Thrombocytosis
3B64Thrombocytopenia
3B65Thrombotic microangiopathy, not elsewhere classified
3B6YOther specified coagulation defects, purpura or other haemorrhagic or related conditions
3B6ZCoagulation defects, purpura or other haemorrhagic or related conditions, unspecified
3B20-3B2Y
Haemorrhagic diseases due to acquired coagulation factor defects
3B50-3B51
Fibrinolytic defects
3B80-3B8Z
Diseases of spleen
Frequently Asked Questions
What ICD-11 codes are in Chapter 3?
Chapter 3: Diseases of the Blood or Blood-Forming Organs covers ICD-11 codes 3A00-3C9Z. It contains 13 code blocks with 54 top-level categories.
What conditions does ICD-11 Chapter 3 cover?
Covers anemias (nutritional, hemolytic, aplastic), coagulation defects, purpura, and other disorders of blood and blood-forming organs. ICD-11 separates blood diseases from immune disorders, providing clearer classification for hematological conditions. This chapter includes codes from 3A00-3C9Z.
How is ICD-11 Chapter 3 different from ICD-10?
ICD-11 reorganized many chapters compared to ICD-10. Chapter 3 (Diseases of the Blood or Blood-Forming Organs) may include conditions that were in different ICD-10 chapters, and some conditions previously here may have moved. ICD-11 also adds new chapters for sleep-wake disorders, sexual health, and traditional medicine that did not exist in ICD-10.
How many code blocks are in ICD-11 Chapter 3?
Chapter 3 has 13 code blocks: 3A00-3A03 (Nutritional or metabolic anaemias), 3A00-3A9Z (Anaemias or other erythrocyte disorders), 3A10-3A1Y (Congenital haemolytic anaemia), 3A10-3A4Z (Haemolytic anaemias), and 9 more.
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