2A71

ICD-11 MMS 2026-01

Precursor T-lymphoblastic neoplasms

Description

A neoplasm of lymphoblasts committed to the T-cell lineage, typically composed of small to medium-sized blast cells.

Index terms

  • Precursor T-lymphoblastic neoplasms
  • T-precursor lymphoma
  • T-lymphoblastic neoplasms

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

  • 2A70 – Precursor B-lymphoblastic neoplasms
  • 2A7Z – Precursor lymphoid neoplasms, unspecified

Foundation entity

Precursor T-lymphoblastic neoplasms – http://id.who.int/icd/entity/803161771

Allowed postcoordination axes

Part of: 02: Neoplasms