14Diseases of the skin
Malignant neoplasms involving the skin
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Cutaneous lymphoma
Definition Primary cutaneous lymphomas are malignant lymphoproliferative diseases of unknown cause that are thought to originate from lymphocytes in the lymphoid tissue of the skin and by definition are confined to the skin at initial diagnosis.
Nearby in Malignant neoplasms involving the skin
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).
Release 2026-01.
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This page reproduces WHO classification content for reference. It is not
medical advice and must not be used to diagnose or treat. For coding
decisions, consult the official release and your national coding guidelines.
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