ICD-10-CM > L00-L99 > L60-L75 > L66 L66 Cicatricial alopecia [scarring hair loss] Non-Billable/Non-Specific Codes L66.0PseudopeladeL66.1Lichen planopilarisL66.10Lichen planopilaris, unspecifiedL66.11Classic lichen planopilarisL66.12Frontal fibrosing alopeciaL66.19Other lichen planopilarisL66.2Folliculitis decalvansL66.3Perifolliculitis capitis abscedensL66.4Folliculitis ulerythematosa reticulataL66.8Other cicatricial alopeciaL66.81Central centrifugal cicatricial alopeciaL66.89Other cicatricial alopeciaL66.9Cicatricial alopecia, unspecified