L66.11 Classic lichen planopilaris

Billable ICD-10-CM code, FY2026.

Applicable to

• Follicular lichen planus

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Code annotations containing back-references to L66.11

Back-references to L66.1

• Type 1 Excludes: L43 Lichen planus ("lichen planopilaris (L66.1-)")

Diagnosis Index entries for L66.11

• Lichen › planopilaris › classic
• Lichen › planopilaris › follicular
• Lichen › planus (chronicus) › follicular

Nearby codes

• L66 Cicatricial alopecia [scarring hair loss]
• L66.0 Pseudopelade
• L66.1 Lichen planopilaris
• L66.10 Lichen planopilaris, unspecified
• L66.11 Classic lichen planopilaris (this code)
• L66.12 Frontal fibrosing alopecia
• L66.19 Other lichen planopilaris
• L66.2 Folliculitis decalvans
• L66.3 Perifolliculitis capitis abscedens
• L66.4 Folliculitis ulerythematosa reticulata