BC43.3

ICD-11 MMS 2026-01

Endocardial fibroelastosis

Description

Endocardial fibroelastosis is the formation of a marked fibro-elastic thickening of the subendocardium in one or both cardiac ventricles. A disorder of fetuses and infants, secondary causes include congenital left-sided obstructive cardiac lesions, metabolic disorders, autoimmune disease (anti-Ro/anti-La antibodies), and transplacental viral infection such as mumps. Primary endocardial fibroelastosis has been linked to recessive and x-linked inheritance, such as with Barth syndrome.

Index terms

  • Endocardial fibroelastosis
  • EFE - [endocardial fibroelastosis]
  • congenital endocardial fibroelastosis
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  • congenital valvular endocarditis (deprecated)
  • elastomyofibrosis
  • endomyocardial fibroelastosis
  • fetal endocarditis
  • fibroelastosis
  • fibroelastosis cordis
  • primary endocardial fibroelastosis
  • Congenital endocarditis
  • Congenital cardiomyopathy
  • Congenital familial cardiomyopathy
  • Congenital subendocardial sclerosis

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

  • BC43.0 – Dilated cardiomyopathy
  • BC43.1 – Hypertrophic cardiomyopathy
  • BC43.2 – Restrictive cardiomyopathy
  • BC43.4 – Cardiomyopathy due to drugs or other external agents
  • BC43.5 – Stress-induced cardiomyopathy
  • BC43.6 – Arrhythmogenic ventricular cardiomyopathy
  • BC43.7 – Diabetic cardiomyopathy
  • BC43.Y – Other specified cardiomyopathy
  • BC43.Z – Cardiomyopathy, unspecified

Foundation entity

Endocardial fibroelastosis – http://id.who.int/icd/entity/1971033419

Allowed postcoordination axes

Part of: BC43: Cardiomyopathy › 11: Diseases of the circulatory system