2A20.3

ICD-11 MMS 2026-01

Chronic eosinophilic leukaemia, not elsewhere classified

Description

A chronic myeloproliferative neoplasm characterised by persistent eosinophilia in the blood, bone marrow and peripheral tissues. Organ damage occurs as a result of leukaemic infiltration or the release of cytokines, enzymes or other proteins by the eosinophils. Chronic eosinophilic leukaemia, not otherwise specified excludes patients with a Ph chromosome, BCR-ABL1 fusion gene or rearrangement of PDGFRA, PDGFRB or FGFR1.

Index terms

  • Chronic eosinophilic leukaemia, not elsewhere classified

Exclusions from above levels

  • 2E03 – Malignant neoplasm metastasis in bone or bone marrow
  • http://id.who.int/icd/entity/501778925 – Malignant neoplasm metastasis in lymph nodes
  • http://id.who.int/icd/entity/97145147 – Malignant neoplasm metastasis in thymus gland

Sibling codes

  • 2A20.0 – Chronic myelogenous leukaemia, BCR-ABL1-positive
  • 2A20.1 – Chronic neutrophilic leukaemia
  • 2A20.2 – Primary myelofibrosis
  • 2A20.4 – Polycythaemia vera
  • 2A20.5 – Non mast cell myeloproliferative neoplasm, unclassifiable
  • 2A20.Y – Other specified non mast cell myeloproliferative neoplasms
  • 2A20.Z – Non mast cell myeloproliferative neoplasms, unspecified

Foundation entity

Chronic eosinophilic leukaemia, not elsewhere classified – http://id.who.int/icd/entity/1901756287

Allowed postcoordination axes

Part of: 2A20: Non mast cell myeloproliferative neoplasms › 02: Neoplasms