Table 1.

List of International Classification of Diseases, Tenth Revision (ICD-10) codes for opioid-related diagnoses used for Algorithm 1 case detection.

ICD-10a code	Description
F11	Opioid-related disorders
T40.0	Poisoning by, adverse effect of, and underdosing of opium
T40.1	Poisoning by, adverse effect of, and underdosing of heroin
T40.2	Poisoning by, adverse effect of, and underdosing of other opioids
T40.3	Poisoning by, adverse effect of, and underdosing of methadone
T40.4	Poisoning by, adverse effect of, and underdosing of other synthetic narcotics
T40.6	Poisoning by, adverse effect of, and underdosing of other and unspecified narcotics

^aICD-10: International Classification of Diseases, Tenth Revision.