KC21

ICD-11 MMS 2026-01

Inflammatory dermatoses of the newborn

Description

A range of inflammatory skin disorders presenting in the neonatal period.

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.

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases - acquired after birth
  • 02 – Neoplasms
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 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

Child codes

  • KC21.0 – Neonatal acne
  • 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

Sibling codes

  • KC20 – Conditions involving the umbilical cord
  • KC22 – Neonatal disorders of subcutaneous fat
  • KC23 – Neonatal disorders of the oral mucosa
  • KC24 – Neonatal nutritional disorders affecting the skin
  • KC40 – Miscellaneous skin disorders in the neonate
  • KC41 – Miscellaneous specified conditions of integument specific to fetus or newborn
  • KC9Z – Disorders involving the integument of fetus or newborn, unspecified

Foundation entity

Inflammatory dermatoses of the newborn – http://id.who.int/icd/entity/2142927078

Part of: 19: Certain conditions originating in the perinatal period