BC43.12

ICD-11 MMS 2026-01

Obstructive hypertrophic cardiomyopathy

Description

Obstructive hypertrophic cardiomyopathy is hypertrophic cardiomyopathy that manifests sufficient fixed or dynamic narrowing within one or both ventricles to result in a significant pressure gradient between the ventricular apex and the outflow valve (aortic or pulmonary).

Index terms

  • Obstructive hypertrophic cardiomyopathy
  • hypertrophic obstructive cardiomyopathy
  • hypertrophic obstructive subaortic stenosis
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  • idiopathic hypertrophic subaortic stenosis
  • muscular subaortic stenosis
  • obstructive cardiomyopathy
  • obstructive idiopathic hypertrophic cardiomyopathy

Exclusions from above levels

  • BC42 – Myocarditis
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 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

Sibling codes

  • BC43.10 – Familial-genetic hypertrophic cardiomyopathy
  • BC43.11 – Non-obstructive hypertrophic cardiomyopathy
  • BC43.1Y – Other specified hypertrophic cardiomyopathy
  • BC43.1Z – Hypertrophic cardiomyopathy, unspecified

Foundation entity

Obstructive hypertrophic cardiomyopathy – http://id.who.int/icd/entity/393452470

Part of: BC43.1: Hypertrophic cardiomyopathy › BC43: Cardiomyopathy › 11: Diseases of the circulatory system