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Table 3 Proportion of ED Visits at University Hospital 1 with non-opioid poisoning ICD-9-CM diagnosis codes that were determined to be opioid-related

From: Use of diagnosis codes for detection of clinically significant opioid poisoning in the emergency department: A retrospective analysis of a surveillance case definition

Code 909: Late effects of other & unspecified external causes (n = 23) 977.9: Poisoning by unspecified drug (n = 27) 304.0 or 304.7: Drug dependence (n = 11) 305.5: Nondependent opioid abuse (n = 17)
Percent male 48 % 37 % 55 % 35 %
Mean age in years (SD) 38.6 (16.9) 27 (16.5) 39.2 (14) 37.2 (12.7)
Percent admitted to hospital 70 % 48 % 73 % 47 %
Percent given naloxone 17 % 7 % 9 % 6 %
Percent with chief complaint of poisoning 17 % 63 % 27 % 41 %
Percent Primary Opioid Poisonings 30 % 22 % 0 % 6 %