14Diseases of the skin
Malignant neoplasms involving the skin
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In situ neoplasms of skin
Definition Cutaneous neoplasms in which cells with cytological changes of the type associated with invasive neoplasms are confined to their location of origin, usually the epidermis or adnexal epithelium.
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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