EA91.2

ICD-11 MMS 2026-01

Follicular lichen planus

Description

Lichen planus involving the hair follicle rather than the epidermis. It typically involves the scalp but may be seen elsewhere. Clinically it presents as grouped small, slightly scaly erythematous follicular papules.

Index terms

  • Follicular lichen planus
  • Lichen planus follicularis
  • Frontal fibrosing alopecia
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  • Postmenopausal frontal fibrosing alopecia
  • Lichen planopilaris
  • Lichen planopilaris of scalp
  • Cicatricial alopecia due to lichen planus
  • Graham-Little syndrome
  • Lassueur-Graham-Little syndrome
  • Piccardi-Lasseur-Little syndrome

Exclusions from above levels

  • 1B72.0 – Bullous impetigo of the napkin area
  • 1F23.12 – Napkin candidosis
  • EH71 – Dermatoses precipitated by drug therapy
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  • EH76 – Dermatoses associated with specific classes of medication

Sibling codes

  • EA91.0 – Acute eruptive lichen planus
  • EA91.1 – Hypertrophic lichen planus
  • EA91.3 – Lichen planus of genital skin and mucous membranes
  • EA91.4 – Lichen planus and lichenoid reactions of oral mucosa
  • EA91.5 – Lichen planus of the nails
  • EA91.6 – Subacute lichen planus
  • EA91.Y – Other specified lichen planus
  • EA91.Z – Lichen planus of unspecified type

Foundation entity

Follicular lichen planus – http://id.who.int/icd/entity/1963050127

Part of: EA91: Lichen planus › 14: Diseases of the skin