BC42

ICD-11 MMS 2026-01

Myocarditis

Description

Myocarditis (inflammatory cardiomyopathy) is inflammation of the heart muscle generally in the presence of a dilated cardiomyopathy that results from exposure to either discrete infectious external antigens such as viruses, bacteria, fungal or parasites; non-infectious external antigens such as hypersensitivity to drugs; or internal non-infectious triggers such as autoimmune or hypersensitive activation against self-antigens.

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 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

  • BC42.0 – Giant cell myocarditis
  • BC42.1 – Infectious myocarditis
  • BC42.2 – Hypersensitivity myocarditis
  • BC42.3 – Rheumatic myocarditis
  • BC42.Y – Other specific myocarditis
  • BC42.Z – Myocarditis, unspecified

Foundation children elsewhere

  • 1B41.2 – Acute rheumatic myocarditis

Sibling codes

  • BC40 – Acquired atrial abnormality
  • BC41 – Acquired ventricular abnormality
  • BC43 – Cardiomyopathy
  • BC44 – Noncompaction cardiomyopathy
  • BC45 – Cardiomegaly
  • BC46 – Intracardiac thrombosis
  • BC4Y – Other specified diseases of the myocardium or cardiac chambers
  • BC4Z – Diseases of the myocardium or cardiac chambers, unspecified

Foundation entity

Myocarditis – http://id.who.int/icd/entity/1018829714

Allowed postcoordination axes

Part of: 11: Diseases of the circulatory system