Management spent a significant portion of the call discussing a temporary issue related to hospital observation determinations. Kao said the company “paid authorizations at full acute rates when we should have paid them at observation rates,” describing it as “a workflow problem” that was course-corrected but impacted January results.Chief Financial Officer Jim Head said adjusted EBITDA margin expanded 90 basis points year-over-year. He also noted that supplemental benefit costs and Part D ran “modestly fav ...