ICD-11 classes
14 Diseases of the skin
Skin disorders involving specific cutaneous structures
Disorders of the epidermis and epidermal appendages
Disorders of the nail or perionychium
EE11 — Acquired abnormalities of nail colour
EE11.0 — Melanonychia

ICD-11 EE11.0 — Melanonychia

Melanin pigmentation of the nail plate. This may be of no significance but may signify the presence of melanoma arising from the nail matrix

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.