A new retrospective study published in OTO Open, the open-access journal of the American Academy of Otolaryngology–Head and Neck Surgery Foundation (AAO-HNSF), demonstrates that the Clinical Practice Guideline (CPG) Opioid Prescribing for Analgesia After Common Otolaryngology Operations has had a measurable and sustained impact on prescribing practices following parotidectomy, which a surgical procedure to remove the parotid gland.