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CFS frame lateral force resisting systems code requirements were first introduced into the 1997 UBC and served as the basis for their inclusion into the AISI Lateral Design standards, AISI S213. There are now several good references and tools to help in the design of these systems. While somewhat similar to wood framed design, there are some differences for which understanding is necessary to ensure proper compliance and performance of these systems. Many of the questions regarding cold-formed steel frame seismic force-resisting systems regard the various system choices, which floor framing system should be used, overturning restraint options, wall stud bracing design, the use of the overstrength factor, Ωo, and anchorage of the overturning restraint system to concrete. This presentation will discuss these aspects of design and include various examples including from the CFSEI Shear Wall Design Guide.