LA8E.3

ICD-11 MMS 2026-01

Interatrial communication through coronary sinus orifice

Description

A congenital cardiovascular malformation in which there is a communication between the left atrium and the coronary sinus allowing interatrial communication through the coronary sinus ostium. Additional information: 'Interatrial communication through coronary sinus orifice' may or may not be associated with a persistent left superior caval vein (superior vena cava). This occurs in the absence of the coronary sinus (total unroofing of the coronary sinus) or partial unroofing of the coronary sinus.

Index terms

  • Interatrial communication through coronary sinus orifice
  • Coronary sinus atrial septal defect

Exclusions from above levels

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

Sibling codes

  • LA8E.0 – Patent oval foramen
  • LA8E.1 – Atrial septal defect within oval fossa
  • LA8E.2 – Sinus venosus defect
  • LA8E.Y – Other specified congenital anomaly of atrial septum
  • LA8E.Z – Congenital anomaly of atrial septum, unspecified

Foundation entity

Interatrial communication through coronary sinus orifice – http://id.who.int/icd/entity/664625334

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