KB2B

ICD-11 MMS 2026-01

Primary atelectasis of newborn

Description

Failure of the lungs to expand after birth, as in stillborn infants or in liveborn infants who die before respiration is established

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

  • Primary atelectasis of newborn
  • Primary failure to expand terminal respiratory units
  • Pulmonary hypoplasia associated with short gestation
Show allHide
  • failure of expansion of terminal respiratory units
  • immature lungs
  • lung lobe hypoplasia, associated with short gestation
  • lung nonexpansion
  • premature lungs
  • primary atelectasis
  • primary atelectasis in perinatal period
  • primary atelectasis of fetus or newborn
  • pulmonary immaturity NOS

Inclusions

  • Primary failure to expand terminal respiratory units

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

  • KB20 – Intrauterine hypoxia
  • KB21 – Birth asphyxia
  • KB22 – Metabolic acidaemia in newborn
  • 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
  • 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

Primary atelectasis of newborn – http://id.who.int/icd/entity/2097051816

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