ICD-11 classes
11 Diseases of the circulatory system
Hypertensive diseases
BA00 — Essential hypertension

ICD-11 BA00 — Essential hypertension

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.

It includes 1 item.

  • high blood pressure

It excludes 2 items.

  • Cerebrovascular diseases (8B00-8B2Z)
  • Background retinopathy and retinal vascular changes (9B78.1)

Diagnosis with code BA00 contains 6 clarifying diagnoses:

  1. BA00.0 — Combined diastolic and systolic hypertension
  2. BA00.1 — Isolated diastolic hypertension
  3. BA00.2 — Isolated systolic hypertension
  4. JA20.0 — Pre-existing essential hypertension complicating pregnancy, childbirth or the puerperium
  5. BA00.Y — Other specified essential hypertension
  6. BA00.Z — Essential hypertension, unspecified

The diagnosis is included in 1 another class.

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

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