Currently, there is growing interest in assessing the perception of the quality of medical services by patients and the public and private providers in the international context entities. By Law 100 of 1993, the overall operation of the social security system of health in Colombia was organized health. The present article is focused on the evaluation of health system and the hospital emergency units. These, represent an important moment and decision of crucial incidence in life of the people demanding imperative medical assistance (emergencies). It concludes that in Colombia, support needed is available from institutions to give better operability conditions in the different instances.