JA21

ICD-11 MMS 2026-01

Pre-eclampsia superimposed on chronic hypertension

Description

A condition affecting pregnant females over 20 weeks gestation. This condition is characterised by systolic blood pressure greater than 140mmHg and diastolic greater or equal to 90mmHg on two occasions 4 hours apart in the presence of either proteinuria or other new onset maternal organ dysfunction characterised by one thrombocytopenia, elevated serum creatinine or liver transaminases, or neurological conditions or fetal growth restriction in a female diagnosed with pre-existing hypertension.

Coding note from above levels

The codes included in this chapter are to be used for conditions related to or aggravated by the pregnancy, childbirth or by the puerperium (maternal causes or obstetric causes)

Index terms

  • Pre-eclampsia superimposed on chronic hypertension
  • Pre-eclampsia superimposed on hypertension NOS
  • Pre-eclampsia superimposed on pre-existing hypertension
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  • Pre-existing hypertension complicating pregnancy, childbirth and the puerperium complicated by pre-eclampsia
  • Superimposed pre-eclampsia
  • pre-eclampsia added to pre-existing hypertension
  • pre-eclampsia or eclampsia with pre-existing hypertension
  • pre-existing hypertensive disorder with superimposed proteinuria
  • proteinuria complicating pregnancy, childbirth or puerperium, superimposed on pre-existing hypertensive disorder
  • puerperal pre-eclampsia with pre-existing hypertension
  • superimposed PET - [pre-eclamptic toxaemia]
  • superimposed PIH - [pregnancy-induced hypertension]

Inclusions

  • Superimposed pre-eclampsia

Exclusions from above levels

  • 1C14 – Obstetrical tetanus
  • 22 – Injury, poisoning or certain other consequences of external causes
  • 23 – External causes (for mortality)
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  • 5A61.0 – Postpartum necrosis of pituitary gland
  • http://id.who.int/icd/entity/882114523 – Mental or behavioural disorders associated with pregnancy, childbirth or the puerperium

Sibling codes

  • JA20 – Pre-existing hypertension complicating pregnancy, childbirth or the puerperium
  • JA22 – Gestational oedema or proteinuria without hypertension
  • JA23 – Gestational hypertension
  • JA24 – Pre-eclampsia
  • JA25 – Eclampsia
  • JA2Z – Oedema, proteinuria, or hypertensive disorders in pregnancy, childbirth, or the puerperium, unspecified

Foundation entity

Pre-eclampsia superimposed on chronic hypertension – http://id.who.int/icd/entity/1872761464

Allowed postcoordination axes

Part of: 18: Pregnancy, childbirth or the puerperium