3B63.1 Acquired thrombocytosis

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

A chronic myeloproliferative neoplasm that involves primarily the megakaryocytic lineage. It is characterised by sustained thrombocytosis in the blood, increased numbers of large, mature megakaryocytes in the bone marrow, and episodes of thrombosis and/or haemorrhage. Progression to a post essential thrombocythaemia myelofibrosis stage or transformation to acute myeloid leukaemia is rarely observed.

inclusions

• Idiopathic haemorrhagic thrombocythaemia

sections/codes in this section (3B63.1-3B63.1)

• Secondary thrombocytosis  (3B63.10)
• Other specified acquired thrombocytosis  (3B63.1Y)
• Acquired thrombocytosis, unspecified  (3B63.1Z)

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