ObjectiveAdenotonsillectomy is a common procedure performed in children, and the practice patterns at academic centers have been evolving with the publication of updated societal guidelines. In this study, we assess perioperative practice patterns at tertiary care children's hospitals for children undergoing adenotonsillectomy.MethodsA cross‐sectional 18‐question survey distributed in July of 2022 recruited responses through August 25, 2022. The division chiefs of 70 pediatric otolaryngology groups at tertiary care children's hospitals across the United States and Canada were surveyed. Division chiefs submitted survey responses on behalf of the group practice patterns for children undergoing adenotonsillectomy. The main measure was survey responses from the division chiefs of pediatric otolaryngology reporting group practice.ResultsThe survey response rate was 46%. Eighty‐eight percent of groups reported an official adenotonsillectomy admission policy. Commonly reported admission criteria included age (93%) and obesity (59%). Eighty‐eight percent of groups defined severe obstructive sleep apnea as apnea‐hypopnea index ≥10. Only 41% of groups required a child to be observed sleeping on room air prior to ambulatory discharge. Ninety‐seven percent of groups reported routinely obtaining preoperative polysomnography in a variety of clinical settings.ConclusionsMany children's hospitals report an official admission policy following adenotonsillectomy. Despite a decade passing since the initial publication of the American Academy of Otolaryngology–Head and Neck Surgery clinical practice guidelines, there remains great variability in the practice patterns for both preoperative polysomnography and postoperative monitoring and admission. These results highlight an opportunity for an improved unified approach to perioperative pediatric adenotonsillectomy practice.Level of Evidence5 Laryngoscope, 2023