Reduce overdose deaths involving synthetic opioids other than methadone — IVP‑22 Data Methodology and Measurement

Deaths are classified using the International Classification of Diseases, Tenth Revision (ICD–10). Drug overdose deaths are identified using underlying cause-of-death codes X40–X44, X60–X64, X85, and Y10–Y14. The numerator will include drug overdose deaths that have synthetic opioids other than methadone ["other synthetic narcotics"] (T40.4) as a contributing cause using the multiple cause of death file.

Death rates are calculated based on the resident population of the United States for the data year involved. For census years (e.g. 2020), population counts enumerated as of April 1 are used. For all other years, populations estimates as of July 1 are used. Postcensal population estimates are used in rate calculations for years after a census year and match the data year vintage (e.g. July 1, 2021 resident population estimates from Vintage 2021 are used as the denominator for 2021 rates). Intercensal population estimates are used in rate calculations for the years between censuses (e.g. 2011–2019).