KB22

ICD-11 MMS 2026-01

Metabolic acidaemia in newborn

Description

Metabolic acidaemia represents an increase in hydrogen ion concentration, usually due to the production of lactic acid following hypoxia or ischemia induced anaerobic metabolism. Acidaemia can also result from inborn errors of metabolism, and disorders of the kidney and liver.

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

  • Metabolic acidaemia in newborn
  • Metabolic acidosis in newborn
  • Metabolic acidaemia in newborn first noted before onset of labour
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  • Metabolic acidaemia in newborn first noted during labour
  • Metabolic acidaemia in newborn at birth

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

Sibling codes

  • KB20 – Intrauterine hypoxia
  • KB21 – Birth asphyxia
  • KB23 – Respiratory distress of newborn
  • KB24 – Congenital pneumonia
  • KB25 – Neonatal tracheitis
  • KB26 – Neonatal aspiration syndromes
  • KB27 – Pulmonary air leak or related conditions originating in the perinatal period
  • KB28 – Pulmonary haemorrhage originating in the perinatal period
  • KB29 – Chronic respiratory disease originating in the perinatal period
  • KB2A – Apnoea of newborn
  • KB2B – Primary atelectasis of newborn
  • KB2C – Cyanotic attacks of newborn
  • KB2D – Respiratory failure of newborn
  • KB2E – Respiratory arrest of newborn
  • KB2F – Congenital lung or lobar atelectasis
  • KB2G – Tracheal haemorrhage of newborn due to airway trauma
  • KB2H – Acquired vocal cord paralysis in newborn
  • KB2J – Airway obstruction in the neonate due to airway abnormality
  • KB2K – Pulmonary cysts in newborn
  • KB2Y – Other specified respiratory disorders specific to the perinatal or neonatal period
  • KB2Z – Respiratory disorders specific to the perinatal or neonatal period, unspecified

Foundation entity

Metabolic acidaemia in newborn – http://id.who.int/icd/entity/677940606

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