ICD-11 classes
14 Diseases of the skin
Benign proliferations, neoplasms and cysts of the skin
Benign cutaneous neoplasms
2F20 — Benign cutaneous melanocytic neoplasms
2F20.2 — Congenital melanocytic naevus
ICD-11 2F20.2 — Congenital melanocytic naevus
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.
The diagnosis includes nothing.
The diagnosis excludes nothing.
Diagnosis with code 2F20.2 contains 3 clarifying diagnoses:
- 2F20.20 — Giant congenital melanocytic naevus
- 2F20.2Y — Other specified congenital melanocytic naevus
- 2F20.2Z — Congenital melanocytic naevus, unspecified
The diagnosis is coded elsewhere:
- Benign cutaneous melanocytic neoplasms #2695
- Congenital melanocytic naevus #2700
- Developmental anomalies of skin pigmentation #16112
- Congenital melanocytic naevus #16114
- Developmental anomalies of skin pigmentation #16290
- Congenital melanocytic naevus #16292
- Developmental anomalies of skin pigmentation #23165
- Congenital melanocytic naevus #23167