2A20.5

ICD-11 MMS 2026-01

Non mast cell myeloproliferative neoplasm, unclassifiable

Description

Cases that have definite features of myeloproliferative neoplasms (MPN), but fail to meet the criteria of a specific MPN subtype.

Index terms

  • Non mast cell myeloproliferative neoplasm, unclassifiable

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
  • 2A20.3 – Chronic eosinophilic leukaemia, not elsewhere classified
  • 2A20.4 – Polycythaemia vera
  • 2A20.Y – Other specified non mast cell myeloproliferative neoplasms
  • 2A20.Z – Non mast cell myeloproliferative neoplasms, unspecified

Foundation entity

Non mast cell myeloproliferative neoplasm, unclassifiable – http://id.who.int/icd/entity/987446104

Allowed postcoordination axes

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