EC21

ICD-11 MMS 2026-01

Genetic defects of hair or hair growth

Child codes

  • EC21.0 – Genetic defects of the hair shaft
  • EC21.1 – Genetic syndromes with abnormalities of the hair shaft
  • EC21.2 – Hereditary alopecia or hypotrichosis
  • EC21.3 – Genetic syndromes with alopecia or hypotrichosis
  • EC21.4 – Genetically-determined hypertrichosis
  • EC21.Y – Other specified genetic defects of hair or hair growth
  • EC21.Z – Genetic defects of hair or hair growth, unspecified

Foundation children elsewhere

  • LD27.3 – Genetic syndromes with hypertrichosis

Sibling codes

  • EC20 – Genetic disorders of keratinisation
  • EC22 – Genetic defects of nails or nail growth
  • EC23 – Genetic disorders of skin pigmentation
  • EC7Y – Other specified genetic or developmental disorders affecting the skin

Foundation entity

Genetic defects of hair or hair growth – http://id.who.int/icd/entity/1018027038

Part of: 14: Diseases of the skin