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Table 2 Discharge diagnostic and procedure codes used in the POAF detection algorithms

From: Validation of an algorithm based on administrative data to detect new onset of atrial fibrillation after cardiac surgery

Discharge diagnostic codesa I48.0: Paroxysmal atrial fibrillation
I48.1: Persistent atrial fibrillation
I48.2: Chronic atrial fibrillationb
I48.9: Atrial fibrillation and atrial flutter, unspecified
I.48.90: Atrial fibrillation, unspecified
Procedure codes 1.HH.59: Maze procedure
  1. aDischarge diagnostic codes are from the Canadian version of the International Classification of Diseases, 10th edition (ICD-10-CA), whereas procedures are from the Canadian Classification of Health Interventions (CCI) [23].
  2. bCode I48.2 was only used to identify patients with a history of AF and not to suggest the presence of POAF.