Letter to the editor regarding the article ‘Temporal trends in the accuracy of hospital diagnostic coding for identifying acute stroke: a population-based study’ by Li L, Binney LE, Luengo-Fernandez R, Silver LW, Rothwell PM; on behalf of the Oxford Vascular Study. European Stroke Journal 2019 Oct 14. DOI: 10.1177/2396987319881017 - Weber, Ralph; Bartig, Dirk; Krogias, Christos; Eyding, Jens; Hacke, Werner (European stroke journal, 2020)