BA00

ICD-11 MMS 2026-01

Essential hypertension

Description

Essential (primary) hypertension, accounting for 95% of all cases of hypertension, is defined as high blood pressure for which a secondary cause cannot be found.

Inclusions

  • high blood pressure

Excludes

  • 9B78.1 – Background retinopathy and retinal vascular changes
  • http://id.who.int/icd/entity/843843448 – Cerebrovascular diseases

Exclusions from above levels

  • BB01 – Pulmonary hypertension
  • http://id.who.int/icd/entity/1042184245 – Oedema, proteinuria, or hypertensive disorders in pregnancy, childbirth, or the puerperium
  • http://id.who.int/icd/entity/1964269418 – involving coronary vessels
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  • MC80.00 – White coat hypertension
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 20 – Congenital malformations, deformations and chromosomal abnormalities
  • 22 – Injury, poisoning or certain other consequences of external causes

Child codes

  • BA00.0 – Combined diastolic and systolic hypertension
  • BA00.1 – Isolated diastolic hypertension
  • BA00.2 – Isolated systolic hypertension
  • BA00.Y – Other specified essential hypertension
  • BA00.Z – Essential hypertension, unspecified

Foundation children elsewhere

  • JA20.0 – Pre-existing essential hypertension complicating pregnancy, childbirth or the puerperium

Sibling codes

  • BA01 – Hypertensive heart disease
  • BA02 – Hypertensive renal disease
  • BA03 – Hypertensive crisis
  • BA04 – Secondary hypertension

Foundation entity

Essential hypertension – http://id.who.int/icd/entity/761947693

Allowed postcoordination axes

Part of: 11: Diseases of the circulatory system