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additional code to identify the source of the radiation (W88, W90)

L58.0 Acute radiodermatitis
L58.1 Chronic radiodermatitis
L58.9 Radiodermatitis, unspecified

L59 Other disorders of skin and subcutaneous tissue related to radiation

L59.0 Erythema ab igne [dermatitis ab igne]
L59.8 Other specified disorders of the skin and subcutaneous tissue related to radiation
L59.9 Disorder of the skin and subcutaneous tissue related to radiation, unspecified

Disorders of skin appendages (L60-L75)

Excludes1: congenital malformations of integument (Q84.-)

L60 Nail disorders

Excludes2: clubbing of nails (R68.3)
onychia and paronychia (L03.0-)
L60.0 Ingrowing nail
L60.1 Onycholysis
L60.2 Onychogryphosis
L60.3 Nail dystrophy
L60.4 Beau's lines
L60.5 Yellow nail syndrome
L60.8 Other nail disorders
L60.9 Nail disorder, unspecified

L62 Nail disorders in diseases classified elsewhere

Code first underlying disease, such as:
pachydermoperiostosis (M89.4-)

L63 Alopecia areata

L63.0 Alopecia (capitis) totalis
L63.1 Alopecia universalis
L63.2 Ophiasis
L63.8 Other alopecia areata
L63.9 Alopecia areata, unspecified

L64 Androgenic alopecia

Includes: male-pattern baldness
L64.0 Drug-induced androgenic alopecia
Code first (T36-T50) to identify drug
L64.8 Other androgenic alopecia
L64.9 Androgenic alopecia, unspecified

==L65