The International Classification of Functioning, Disability and Health (ICF), adopted by the World Health Organization (WHO) in 2001, offers a framework for a comprehensive understanding of health. One of the main goals of the ICF is to provide a conceptual framework of health that can be applied both for research purposes and in clinical settings. In order to promote the use of the ICF in clinical settings, the WHO initiated the Core Sets project. Core Sets, targeting a specific health condition, consist of a set of ICF categories that can serve as minimal standards (Brief ICF Core Set) or as standards for comprehensive assessment (Comprehensive ICF Core Set). In 2009, a process of developing ICF Core Sets for Hearing Loss was initiated. This process involves three phases of development. In the first phase, four scientific studies are conducted to collect evidence for relevant ICF categories to be used in the Core Sets. In phase two, a consensus conference is held to establish relevant ICF categories, and in the third phase, the Core Sets that are retained are tested and validated. This paper describes the process of developing ICF Core Sets for Hearing Loss as well as an invitation to participate in the project.