This chapter is from Rehabilitation Education, 2005, 19(2&3), 191-199. In discussing the ways in which the International Classification of Functioning, Disability, and Health (ICF) differs from its predecessor, the International Classification of Impairments, Disabilities and Handicaps (ICIDH; WHO, 1980), this article addresses the following topics: (1) a system that advocates both accommodation and rehabilitation; (2) a system that is individual-driven rather than diagnosis driven; (3) a system that will facilitate interdisciplinary collaboration; (4) a system in which physicians will no longer be the sole authority on disability; and (5) a system that will facilitate change in professional training and education. Finally, cautions for the use of the ICF are presented.