Polycythaemia vera
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In short
Bone marrow is the spongy tissue inside bones that contains stem cells, which develop into red blood cells, white blood cells, and platelets. In myeloproliferative disorders, which are a type of bone marrow disease, the bone marrow makes too many white blood cells. Causes of bone marrow diseases include genetics and environmental factors, and treatments depend on the disorder and its severity.
Source: MedlinePlus, National Library of Medicine.
AI-generated summary of the sources cited on this page, checked automatically against them. Not reviewed by a clinician; not medical advice.
Codes
Description
Bone marrow is the spongy tissue inside some of your bones, such as your hip and thigh bones. It contains stem cells. The stem cells can develop into the red blood cells that carry oxygen through your body, the white blood cells that fight infections, and the platelets that help with blood clotting.
With bone marrow disease, there are problems with the stem cells or how they develop:
- In leukemia, a cancer of the blood, the bone marrow makes abnormal white blood cells
- In aplastic anemia, the bone marrow doesn't make red blood cells
- In myeloproliferative disorders, the bone marrow makes too many white blood cells
- Other diseases, such as lymphoma, can spread into the bone marrow and affect the production of blood cells
Causes of bone marrow diseases include genetics and environmental factors. Tests for bone marrow diseases include blood and bone marrow tests. Treatments depend on the disorder and how severe it is. They might involve medicines, blood transfusions or a bone marrow transplant.
Next to it in ICD-10
- D25Uterine fibroids
- D27Benign ovarian tumour
- D39Tumour of uncertain behaviour of the female genital organs
- D46Myelodysplastic Syndromes
- D56Thalassemia
- D57Sickle cell disease
Neighbouring codes in the classification, not a medical link.
External resources
Questions
What is the ICD-10 code for Polycythaemia vera?
D45 (WHO, International Classification of Diseases, 10th Revision).
What is the ICD-11 code for Polycythaemia vera?
2A20.4: Polycythaemia vera (WHO, ICD-11 for Mortality and Morbidity Statistics).
Sources and attribution
- ICD-11 for Mortality and Morbidity Statistics, © World Health Organization, licensed under CC BY-ND 3.0 IGO.
- Names other than the official source titles: Anpheros translations and plain-language names, made with AI assistance and checked automatically; the source names are in English.
- Source: MedlinePlus, National Library of Medicine.
- ICD-10 codes and titles © World Health Organization. Source: WHO, International Classification of Diseases, 10th Revision (2019).
Anpheros Search catalog 2026.10.5, published 17 October 2026. About the data →
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