In this report, PICUM aims to identify some of the main problems and obstacles in gathering information within 11 EU member states concerning residence permits for seriously ill undocumented migrants. For each country, an analysis of the legal framework for eligibility of such a residence permit, the availability of medical stay permits, the application procedure and the involvement of health care practitioners during the procedure is addressed. The opinions of NGOs, authorities and health care practitioners on the creation of a European medical database of information on the availability and accessibility of medical treatment around the world are also presented.