Documenting survey metadata for large-scale household surveys presents unique challenges that require a formalized approach. The Consumer Expenditure Survey Program (CE) has a three dimensional nature which adds an additional layer of complexity. For these surveys, major changes occur biannually and affect the processing subsystems and survey instruments. DDI provides a way to describe the multi-dimensional nature of the CE and allows the survey program to track these changes in a consistent, reusable, and replicable way. Implementing DDI will drive the CE toward the use of an international metadata standard and provide increased interoperability. Mapping CE metadata to DDI elements represents an ongoing challenge to developing the system. We propose a potential solution and explore the process of its implementation. The goals of DDI implementation include improving the administrative efficiency of the survey, facilitating centralized access to information about the current state of the survey, and providing a way for both survey staff and the public to easily access information about survey changes across time. This paper outlines the process and the challenges with implementing DDI into the CE framework, as well as the work that has been done, and the work that is left for full implementation.