L66 - Cicatricial alopecia [scarring hair loss]
L66.0 - Pseudopelade
L66.1 - Lichen planopilaris
L66.2 - Folliculitis decalvans
L66.3 - Perifolliculitis capitis abscedens
L66.4 - Folliculitis ulerythematosa reticulata
L66.8 - Other cicatricial alopecia
L66.9 - Cicatricial alopecia, unspecified