KC21.0

ICD-11 MMS 2026-01

Neonatal acne

Description

Acne presenting at birth or shortly afterwards, generally with predominantly comedonal lesions of the cheeks and a paucity of inflammatory lesions. It is thought to be due to hyperactivity of the sebaceous glands stimulated by neonatal androgens from the testes in boys and adrenals in girls.

Coding note from above levels

Conditions arising in the perinatal period, even though death or morbidity occurs later, should, as far as possible, be coded to chapter 19, which takes precedence over chapters containing codes for diseases by their anatomical site. For children less than 28 days old, assume that a reported condition developed in the perinatal period, unless the duration is stated and the onset was after the first completed week of life.

Index terms

  • Neonatal acne

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases - acquired after birth
  • 02 – Neoplasms
  • 05 – Endocrine, nutritional or metabolic diseases
Show allHide
  • 08 – Certain congenital diseases of the nervous system
  • 20 – Congenital malformations, deformations and chromosomal abnormalities
  • 22 – Injury, poisoning or certain other consequences of external causes
  • 3A10 – Hereditary haemolytic anaemia
  • 4A01.03 – Transient hypogammaglobulinaemia of infancy
  • 9B71.3 – Retinopathy of prematurity
  • BC43 – congenital cardiomyopathy
  • DA93.0 – Paralytic ileus
  • EA50.Z – Pemphigus neonatorum
  • EH40.00 – Cradle cap
  • http://id.who.int/icd/entity/588616678 – Gastroenteritis or colitis of infectious origin
  • http://id.who.int/icd/entity/609214049 – Congenital gonococcal infection

Sibling codes

  • KC21.1 – Neonatal toxic erythema
  • KC21.2 – Perianal dermatitis of the newborn
  • KC21.Y – Other specified inflammatory dermatoses of the newborn
  • KC21.Z – Inflammatory dermatoses of the newborn, unspecified

Foundation entity

Neonatal acne – http://id.who.int/icd/entity/1302834639

Part of: KC21: Inflammatory dermatoses of the newborn › 19: Certain conditions originating in the perinatal period