ICD-11 MMS

02 Neoplasms

Benign neoplasms, except of lymphoid, haematopoietic, central nervous system or related tissues  (2E80-2F5Z)

Benign non-mesenchymal neoplasms  (2E90-2F3Z)

Benign cutaneous neoplasms  (2F20-2F2Z)

2F20 Benign cutaneous melanocytic neoplasms

Congenital melanocytic naevus

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01


Congenital melanocytic naevi are circumscribed areas of skin pigmentation present at birth as a result of abnormal intrauterine proliferation of melanocytes within the dermis, the epidermis or both. They may range in size from a few millimetres to many centimetres in diameter. If their projected or final adult maximal diameter is greater than 20 cm they are termed giant congenital melanocytic naevi.

sections/codes in this section (2F20.2-2F20.2)

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