Acral lentiginous melanoma, primary

Description

Acral lentiginous malignant melanoma is a distinct and uncommon form of melanoma affecting either palmar and plantar skin or the nail apparatus. It is usually preceded by a slowly progressive in situ phase which may be overlooked. It typically presents either as an enlarging area of macular pigmentation on the palms and soles or as a longitudinal pigmented band within the nail plate. More aggressive tumours present as ulcerated nodules which, when involving the nail apparatus, can destroy the nail plate. Acral lentiginous malignant melanoma accounts for a high proportion of melanomas seen in dark-skinned people.

Coding note from above levels

For use of this category, reference should be made to the mortality coding rules and guidelines in the Reference Guide.

Exclusions from above levels

• 2C00.1 – Melanoma of anus or anal canal
• 2C70.1 – Melanoma of vulva
• 2C81.1 – Melanoma of penis