C91 is the ICD-10 code for Lymphoid leukaemia. It is a three-character category divided into 9 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block C81–C96 (Malignant neoplasms, stated or presumed to be primary, of lymphoid, haematopoietic and related tissue) in Chapter II, Neoplasms.
- Code type
- Category (3 characters)
- Chapter
- II · C00–D48
- Classification
- WHO ICD-10, 2019 version
Subcodes of C91
- C91.0Acute lymphoblastic leukaemia [ALL]
- C91.1Chronic lymphocytic leukaemia of B-cell type
- C91.3Prolymphocytic leukaemia of B-cell type
- C91.4Hairy-cell leukaemia
- C91.5Adult T-cell lymphoma/leukaemia [HTLV-1-associated]
- C91.6Prolymphocytic leukaemia of T-cell type
- C91.7Other lymphoid leukaemia
- C91.8Mature B-cell leukaemia Burkitt-type
- C91.9Lymphoid leukaemia, unspecified
C91 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DC91Lymfatiske leukæmier
C91Lymfaattinen leukemia
- C91.2Puoliakuutti lymfosyyttileukemia
C91Lymphatische Leukämie
C91Leucémie lymphoïde
C91lymfatische leukemie
Listed through more specific codes:
- C91.A0Mature B-cell leukemia Burkitt-type not having achieved remission
- C91.A1Mature B-cell leukemia Burkitt-type, in remission
- C91.A2Mature B-cell leukemia Burkitt-type, in relapse
- C91.Z0Other lymphoid leukemia not having achieved remission
- C91.Z1Other lymphoid leukemia, in remission
- C91.Z2Other lymphoid leukemia, in relapse
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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