Predictors of insurance denial with and without prior authorization in patients undergoing spine surgery: a year-long, single-center cohort analysis. - Di L; Jackson S; Tigchelaar S; Cardinal T; Levy A; Khalafallah AM; Tierney L; Sasser A; Wang MY; Levi AD; Basil G (The spine journal : official journal of the North American Spine Society, 2026)