KA20

ICD-11 MMS 2026-01

Disorders of newborn related to slow fetal growth or fetal malnutrition

Coding note

When both birth weight and gestational age are available, priority of assignment should be given to birth weight.

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

  • KA20.0 – Small for gestational age
  • KA20.1 – Intrauterine growth restriction
  • KA20.2 – Fetal intrauterine malnutrition without mention of small for gestational age
  • KA20.Y – Other specified disorders of newborn related to slow fetal growth or fetal malnutrition
  • KA20.Z – Disorders of newborn related to slow fetal growth or fetal malnutrition, unspecified

Sibling codes

  • KA21 – Disorders of newborn related to short gestation or low birth weight, not elsewhere classified
  • KA22 – Disorders of newborn related to long gestation or high birth weight
  • KA2Y – Other specified disorders of newborn related to length of gestation or fetal growth
  • KA2Z – Disorders of newborn related to length of gestation or fetal growth, unspecified

Foundation entity

Disorders of newborn related to slow fetal growth or fetal malnutrition – http://id.who.int/icd/entity/1705439408

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