2A20.0

ICD-11 MMS 2026-01

Chronic myelogenous leukaemia, BCR-ABL1-positive

Excludes

  • 2A40 – Chronic myelomonocytic leukaemia
  • 2A41 – Atypical chronic myeloid leukaemia, BCR-ABL1-negative
  • 2B33.2 – Chronic myeloid 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

Child codes

  • 2A20.00 – Chronic myelogenous leukaemia with blast crisis
  • 2A20.01 – Chronic myelogenous leukaemia, Philadelphia chromosome (Ph1) positive
  • 2A20.02 – Chronic myelogenous leukaemia, t(9:22)(q34; q11)
  • 2A20.03 – Naegeli-type monocytic leukaemia
  • 2A20.0Y – Other specified chronic myelogenous leukaemia, BCR-ABL1-positive
  • 2A20.0Z – Chronic myelogenous leukaemia, BCR-ABL1-positive, unspecified

Sibling codes

  • 2A20.1 – Chronic neutrophilic leukaemia
  • 2A20.2 – Primary myelofibrosis
  • 2A20.3 – Chronic eosinophilic leukaemia, not elsewhere classified
  • 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 myelogenous leukaemia, BCR-ABL1-positive – http://id.who.int/icd/entity/1735009745

Allowed postcoordination axes

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