BC40

ICD-11 MMS 2026-01

Acquired atrial abnormality

Description

A postnatal pathological change in form or function of one or both atriums.

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

  • BC40.0 – Acquired interatrial communication
  • BC40.Y – Other specified acquired atrial abnormality
  • BC40.Z – Acquired atrial abnormality, unspecified

Foundation children elsewhere

  • BE17 – Postprocedural residual or recurrent interatrial communication
  • BE1E – Postprocedural right atrial complication
  • BE1F – Postprocedural left atrial complication

Sibling codes

  • BC41 – Acquired ventricular abnormality
  • BC42 – Myocarditis
  • 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

Acquired atrial abnormality – http://id.who.int/icd/entity/331846068

Allowed postcoordination axes

Part of: 11: Diseases of the circulatory system