ICD-10-CM > L00-L99 > L60-L75 > L66 > L66.1 L66.1 Lichen planopilaris Non-Billable/Non-Specific Codes L66.10Lichen planopilaris, unspecifiedL66.11Classic lichen planopilarisL66.12Frontal fibrosing alopeciaL66.19Other lichen planopilaris