The research discourse on sustainability and on business models can be described as diverse in approaches and understanding of subject areas. The value-oriented business model and the twenty criteria of the German Sustainability Code represent a sample which is used for this research to examine and compare the sustainability of business models in practice. In addition, the relation between digital transformation and sustainability is considered. For this purpose, influences from theory and practice are included in order to further support the combination of these two concepts. With a qualitative document analysis, the selected business model cases are reviewed for their sustainability and finally characterized with the help of established hypotheses. It can be stated that sustainability aspects are potentially present in business models in the health care sector, but that there are clear deficits in the development and strategic anchoring. A first proposal for a solution is presented in the form of a framework.