ICD-11 classes
03 Diseases of the blood or blood-forming organs
Neoplasms of haematopoietic or lymphoid tissues
Precursor lymphoid neoplasms

ICD-11 Precursor lymphoid neoplasms

Neoplasms of immature malignant lymphocytes (lymphoblasts) committed to the B-cell or T-cell lineage. Neoplasms involving the bone marrow and the peripheral blood are called precursor lymphoblastic leukaemias or acute lymphoblastic leukaemias. Neoplasms involving primarily lymph nodes or extranodal sites are called lymphoblastic lymphomas.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis contains 3 clarifying diagnoses:

1. 2A70 — Precursor B-lymphoblastic neoplasms
   It contains 3 clarifying diagnoses.
2. 2A71 — Precursor T-lymphoblastic neoplasms
3. 2A7Z — Precursor lymphoid neoplasms, unspecified

The diagnosis is coded elsewhere:

• Neoplasms of haematopoietic or lymphoid tissues #1534
• Precursor lymphoid neoplasms #1625