Fig. 1.

The three waves of the overdose crisis: opioid overdose deaths by type of opioid. Drug poisoning deaths classified using ICD-10 underlying cause of death codes (X40–X44, X60–X64, X85 and Y10–Y14) and by drugs involved as immediate or contributory causes of death: heroin (T40.1), synthetic opioids, most importantly fentanyl (T40.4) and opioids other than methadone, opium, heroin and synthetic opioids (T40.2). Data

accessed from the Centers for Disease Control and Prevention, National Center for Health Statistics. Multiple Cause of Death 1999–2019 on CDC WONDER Online Database, released in 2020. Data are from the Multiple Cause of Death Files, 1999–2019, as compiled from data provided by the 57 vital statistics jurisdictions through the Vital Statistics Cooperative Program. Accessed at http://wonder.cdc.gov/mcd-icd10.html on Nov 21, 2021 2:55:14 PM