The Social Model of Disability...
...as defined by Wikipedia,  proposes that barriers and prejudice and exclusion by society (purposely or inadvertently) are the ultimate factors defining who is disabled and who is not in a particular society.

It recognizes that while some people have physical, intellectual, or psychological differences from a statistical mean, which may sometimes be impairments, these do not have to lead to disability unless society fails to accommodate and include them in the way it would those who are 'normal.

The phrase 'differently abled' is sometimes used to convey an aspect of the social model of disability, although the model is not generally taken as denying that some attributes (or loss of) can be seen (when unaided) as impairments.

The origins of the approach can be traced to the 1960s and the Civil Rights Movement/human rights movements; the specific term itself emerged from the United Kingdom in the 1980s.