Each country, state and even sometimes city set their own regulations in regards to landlord responsibility to bed bugs. Although there is no federally regulated standard the first step is to report the problem to your landlord. In most states expect the landlord to bring in a qualified exterminator to do an official inspection. This inspection is not just to confirm that there are bed bugs present. The CDC and other agencies recommend inspectors to measure the depth of bed bugs. This number is an indication that may become legally important in some situations. One of the best places to get information on the exact responsibilities of your landlord is the same material that state legislators reference. The National Conference of State Legislature has an online resource that explains state bed bug law. It even has an interactive, searchable table so you can find the information specific to your state.