The International Classification of Functioning, Disability and Health (ICF) is a way of looking at how a person's health affects their life. It looks at how their physical health, mental health, and social environment can make life different for them. It also looks at how a person's disability and health can affect their ability to do things, like work, go to school, and do housework. The ICF helps people understand how a person's health can change their life and how to best help them.