Many scoring systems have been developed to predict various outcomes in patients with upper gastrointestinal bleeding (UGIB) including need-for-intervention, endoscopy, transfusion and/or death. This review summarises the present knowledge of the various scoring systems. It has been impossible to develop one score to predict all outcomes of interest. Glasgow-Blatchford Score (GBS) is shown to be superior to predict hospital-based intervention or death. For mortality, the newly developed ABC score seems promising. International guidelines recommend routine use of GBS to assess patients with UGIB, which is shown to reduce hospital admissions, length-of-stay and cost utilisation.