ICD-9-CM Diagnosis codes for adverse outcomes associated with AF:
Previously described algorithms were used to identify ischemic stroke, intracranial hemorrhage and other hemorrhage events. The estimated positive predictive values of the proposed definitions are 95% for ischemic stroke, 76% for intracranial hemorrhage and 88% for major bleeding.20
Ischemic stroke
• With mention of cerebral infarction	433.01, 433.11, 433.21, 433.31, 433.81, 433.91, 434.01, 434.11, 434.91
• other cerebral ischemic event	436.x
Major hemorrhage
• Intracranial hemorrhage	430.X, 431.X, 432.X (may also include trauma codes 852.0X, 852,2X 852,4X, 853.0)
• Gastrointestinal hemorrhage	455.2, 455.5, 455.8, 456.0, 456.2, 459.0, 530.7, 530.8, 531.0–531.6, 532.0 – 532.6, 533.0–533.6, 534.0–534.6, 535.01, 535.11, 535.21, 535.31, 535.41, 535.51, 535.61, 537.8, 562.02, 562.03, 562.12, 562.13, 568.81, 569.3, 569.85, 569.3, 578.0, 578.1, 578.9
• Other major bleeding	423.0X, 593.81, 599.,7X, 623.8X, 626.2X, 626.2X, 719.1X, 786.3X, 784.7X, 784.8X,