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Table 6 ICD9-CM diagnosis codes indicating potential medication overdose

From: Development of an algorithm to identify serious opioid toxicity in children

  Code Diagnosis
A. Opioid or unspecified analgesic
 1. 965.0 Poisoning by analgesics, antipyretics, and antirheumatics, opiates and related narcotics
 2. 965.8 Other specified analgesics and antipyretics, pentazocine
 3. 965.9 Unspecified analgesic and antipyretic
 4. E850.0 Accidental poisoning by analgesics, antipyretics, and antirheumatics, heroin
 5. E850.1 Accidental poisoning by analgesics, antipyretics, and antirheumatics, methadone
 6. E850.2 Accidental poisoning by analgesics, antipyretics, and antirheumatics, other opiates and related narcotics
 7. E850.8 Accidental poisoning by analgesics, antipyretics, and antirheumatics, pentazocine
 8. E850.9 Accidental poisoning by analgesics, antipyretics, and antirheumatics, unspecified analgesic or antipyretic
 9. E950.0* Self-inflicted injury, analgesics, antipyretics, and antirheumatics
 10. E980.0* Injury undetermined whether accidentally or purposely inflicted, analgesics, antipyretics, and antirheumatics
B. Other specified medication. Code only qualifies if not otherwise listed (in A, C)
 11. 960–979
 12. E850–E858
 13. E950.0–E950.4*
 14. E980.0–E980.4*
C. Unspecified medication or substance
 15. 292.1 Drug-induced psychotic disorders
 16. 292.2 Pathological drug intoxication
 17. 292.8 Other specified drug-induced mental disorders
 18. 292.9 Unspecified drug-induced mental disorder
 19. 909.0 Late effect of poisoning due to drug, medicinal or biological substance
 20. 977.9 Poisoning by other and unspecified drugs and medicinal substances
 21. E858.9 Accidental poisoning by other drugs, unspecified drug
 22. E950.5* Self-inflicted injury, unspecified drug or medicinal substance
 23. E980.5* Injury undetermined whether accidentally or purposely inflicted, unspecified drug or medicinal substance
 24. E950.9* Self-inflicted injury, other and unspecified solid and liquid substances
 25. E980.9* Injury undetermined whether accidentally or purposely inflicted, other and unspecified solid and liquid substances
  1. Codes with an * denote possible intentional injuries. Unlike Dunn and colleagues [3], we do not include codes for intentional injuries where these specify a means other than drug (e.g. firearm). We also do not include the injury codes for unspecified means; preliminary review established these were nearly all E988.9, and had little probability of relation with an endpoint.