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International Classification of Functioning, Disability and Health (ICF)

The ICF classifies “components of health”: Body functions, body structures, activities and participation and environmental factors.

Components of the ICF

b Body functions

Body functions are the physiological functions of body systems (including psychological functions). Impairments have adverse effects on body function or structure, such as a significant deviation or loss. Show more

s Body structures

Body structures are anatomical parts of the body such as organs, limbs and their components. Impairments have adverse effects on body function or structure, such as a significant deviation or loss. Show more

d Activities and participation

Activity is the execution of a task or action by an individual. Participation is involvement in a life situation. Activity limitations are difficulties an individual may have in executing activities. Participation restrictions are problems an individual may experience in involvement in life situations. Show more

e Environmental factors

Environmental factors make up the physical, social and attitudinal environment in which people live and conduct their lives. Show more

i Personal Factors

are currently not classified in the ICF. Show more