Neoplasms of haematopoietic or lymphoid tissues

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

A neoplasm arising from hematopoietic or lymphoid cells found in the bone marrow, peripheral blood, lymph nodes and spleen (organs of the hematopoietic or lymphoid system). Hematopoietic or lymphoid cell neoplasms can also involve other anatomic sites (e.g. central nervous system, gastrointestinal tract), either by haematogenous spread, direct tumour infiltration, or neoplastic transformation of extranodal lymphoid tissues. The commonest forms are the various types of leukaemia, Hodgkin and non-Hodgkin lymphomas, myeloproliferative neoplasms and myelodysplastic syndromes.

exclusions

• Malignant neoplasm metastasis in bone or bone marrow  (2E03)
• Malignant neoplasm metastasis in lymph nodes  (2D60-2D6Z)
• Malignant neoplasm metastasis in spleen  (2E00-2E0Y)
• Malignant neoplasm metastasis in thymus gland  (2E00-2E0Y)

sections/codes in this section (2A20-2B3Z)

• Myeloproliferative neoplasms  (2A20-2A2Z)
• Myelodysplastic syndromes  (2A30-2A3Z)
• Myelodysplastic and myeloproliferative neoplasms  (2A40-2A4Z)
• Myeloid and lymphoid neoplasms with eosinophilia and abnormalities of PDGFRA, PDGFRB or FGFR1  (2A50-2A5Z)
• Acute myeloid leukaemias and related precursor neoplasms  (2A60)
• Acute leukaemias of ambiguous lineage  (2A61)
• Precursor lymphoid neoplasms  (2A70-2A7Z)
• Mature B-cell neoplasms  (2A80-2A8Z)
• Mature T-cell or NK-cell neoplasms  (2A90-2B2Z)
• Hodgkin lymphoma  (2B30)
• Histiocytic or dendritic cell neoplasms  (2B31)
• Immunodeficiency-associated lymphoproliferative disorders  (2B32)
• Malignant haematopoietic neoplasms without further specification  (2B33)
• Neoplasms of haematopoietic or lymphoid tissues, unspecified  (2B3Z)

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