In 2014, the editorial board of BMC Medical Ethics came together to devise sections for the journal that would give structure to the journal help ensure that authors’ research is matched to the most appropriate editors and help readers to find the research most relevant to them. The editorial board decided to take a practical approach to devising sections that dealt with the challenges of content management. After that, we started thinking more theoretically about how one could go about classifying (...) the field of medical ethics. This editorial elaborates and reflects on the practical approach that we took at the journal, then considers an alternative theoretically derived approach, and reflects on the possibilities, challenges and value of classifying the field more broadly. (shrink)