Fig. 1From: Use of diagnosis codes for detection of clinically significant opioid poisoning in the emergency department: A retrospective analysis of a surveillance case definition9pt?>Decision tree for identifying clinically significant opioid poisoning in emergency department visits coded as opioid poisoning. *History of Present Illness was positive for opioid poisoning if it included signs of opioid poisoning (altered mental status or respiratory depression) after an opioid ingestionBack to article page