This article was first published in the Fall 2020 issue of Critical Connections. Critical care and follow-on care policies vary among insurers and Medicare Administrative Contractors (MACs). Providers should follow the guidance of the insurer or MAC. This article does not constitute legal advice, and the provider is ultimately responsible for compliance with Medicare billing rules. Critical Connections, the critical care industry's only newsmagazine, provides information on cutting-edge topics in critical care useful to the entire multiprofessional team.Deborah Grider, CPC, COC, CPC-I, CPC-P, CPMA, CEMC, CCS-P, CDIP  David L. Carpenter, MAPS, PA-C, FCCM