This is a good point, but it's not just that; X44 includes opioid deaths! X42 governs accidental narcotic poisoning, but only in cases where the drug is specif

This is a good point, but it's not just that; X44 includes opioid deaths! X42 governs accidental narcotic poisoning, but only in cases where the drug is specified, and isn't necessarily applied for prescription opioids. The list above for X44 is the 'including' list of suggestions, but the category includes any death from "unspecified drugs". And contributing causes of death are handled under a separate system making it possible to list more drugs in more detail, so the CDC says that both prescription and illicit opioid deaths can crop up under X44. https://www.cdc.gov/drugoverdose/pdf/pdo_guide_to_icd-9-cm_and_icd-10_codes-a.pdf https://www.cdc.gov/drugoverdose/pdf/pdo_guide_to_icd-9-cm_a...