LC01

ICD-11 MMS 2026-01

Pilosebaceous hamartoma

Description

Hamartomatous malformation involving elements originating from the developing pilosebaceous follicle.

Index terms

  • Pilosebaceous hamartoma
  • Comedo naevus
  • Naevus comedonicus
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  • Hair follicle naevus
  • Basaloid follicular hamartoma
  • Dilated pore naevus
  • Linear basal cell naevus
  • Woolly hair naevus

Exclusions from above levels

  • 5C58.12 – Congenital erythropoietic porphyria
  • 5C64.20 – Acrodermatitis enteropathica
  • EG63 – pilonidal cyst or sinus
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  • http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

  • LC00 – Keratinocytic epidermal hamartoma
  • LC02 – Complex epidermal hamartoma
  • LC0Y – Other specified developmental hamartomata of the epidermis and epidermal appendages

Foundation entity

Pilosebaceous hamartoma – http://id.who.int/icd/entity/59912591

Part of: 20: Developmental anomalies