LA8E.0

ICD-11 MMS 2026-01

Patent oval foramen

Description

A congenital cardiovascular finding in which there is a small interatrial communication (or potential communication) confined to the region of the oval fossa (fossa ovalis) characterised by no deficiency of the primary atrial septum (septum primum) and a normal limbus with no deficiency of the septum secundum (superior interatrial fold).

Index terms

  • Patent oval foramen
  • PFO - [patent foramen ovale]
  • Patent foramen ovale
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  • open foramen ovale
  • open oval foramen
  • persistent foramen ovale

Exclusions from above levels

  • http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

  • LA8E.1 – Atrial septal defect within oval fossa
  • LA8E.2 – Sinus venosus defect
  • LA8E.3 – Interatrial communication through coronary sinus orifice
  • LA8E.Y – Other specified congenital anomaly of atrial septum
  • LA8E.Z – Congenital anomaly of atrial septum, unspecified

Foundation entity

Patent oval foramen – http://id.who.int/icd/entity/1618980674

Part of: LA8E: Congenital anomaly of atrial septum › 20: Developmental anomalies