CDC Report Finds ER Visits for Cannabis Hyperemesis Syndrome Jumped 16% After New Diagnosis Code Took Effect
A CDC report released Thursday, August 6, found emergency room visits for cannabis hyperemesis syndrome rose 16% between October 2025 and May 2026. The spike lines up almost exactly with a new diagnosis code introduced October 1, 2025, meaning doctors probably weren't creating new cases, they were finally naming ones that already existed.