According to the government of Québec, a person has a functional impairment if they have:

• an intellectual impairment, with an intelligence quotient (IQ) of less than 70, as determined through standardized testing
• a severe permanent psychiatric, organic*, or motor impairment which, in spite of technological assistance (in the case of motor impairment) prevents them from carrying out normal day-to-day activities
• a severe, permanent multiple impairment, with 2 or more of the following impairments that combine to prevent them from carrying out normal day-to-day activities:
• intellectual impairment
• psychiatric impairment
• organic impairment
• motor impairment
• speech or language impairment
• hearing impairment (as determined by a hearing test where the person has an acuity threshold of 40 decibels or more at a frequency of 500, 1,000, and 2,000 hertz in the ear that has the best hearing capability)
• visual impairment (after correction through the use of the appropriate lenses) that’s characterized by visual acuity in each eye of not more than 6/21 or by a field of vision in each eye that is less than 60° in the 180° and 90° meridians or that requires the use of special optical systems of over +4.00 dioptres

*An organic impairment refers to the decrease in mental function due to a physical disease rather than a psychiatric illness. 

Note: A functional impairment must be certified by a health professional.