Regarding considerable advances in the diagnosis and management of myocardial infarction (MI) in recent years, the leadership of the European Society of Cardiology, American College of Cardiology and American Heart Association convened, together with the World Heart Federation, a Global Task Force, to update the 2000 consensus document to establish a universal definition of MI. The new report expands the criteria for defining MI by adding new material on biomarker evaluation, ECG criteria, imaging modalities as well as implications for diagnosing reinfarction. Consensus has been met on how to define MI associated with revascularization procedures. In order to facilitate comparison of data of clinical studies, a new clinical classification of MI was proposed. Although several recommendations from the new document have already been implemented in clinical work in Estonia, certain issues, especially the ones related to biomarker evaluation, still need to be addressed. Also, the Estonian Myocardial Infarction Registry will adjust its database and reporting system according to the new definition document.