The World Health Organization’s (WHO) International Classification of Functioning, Disability and Health (ICF) is a common framework to understand and describe functioning and disability. To make the ICF more applicable for everyday use, WHO and the ICF Research Branch created a process for developing core sets of ICF categories or “ICF Core Sets”. ICF Core Sets facilitate the description of functioning, for example in clinical practice, by providing lists of essential categories that are relevant for specific health conditions and health care contexts. These ICF categories are selected from the entire ICF following a scientific process based on preparatory studies and the involvement of a multidisciplinary group of experts.