L66.11: Classic lichen planopilaris
L66.11 is the billable ICD-10-CM diagnosis code for Classic lichen planopilaris. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code L66.11?
L66.11 is the ICD-10-CM diagnosis code for Classic lichen planopilaris. It belongs to category L66 (Cicatricial alopecia [scarring hair loss]).
Is L66.11 a billable code?
Yes. L66.11 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does L66.11 belong to?
L66.11 is part of ICD-10-CM category L66 — Cicatricial alopecia [scarring hair loss], which has 22 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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