In Canada, health care is a responsibility of the provinces. In the province of Ontario, the price of hearing aids is partially reimbursed through the Assistive Devices Program of the Ministry of Health and Long-Term Care, up to $500 for each hearing aid.
https://en.wikipedia.org/wiki/Hearing_aid
Hearing aids are incapable of truly correcting a hearing loss; they are an aid to make sounds more accessible. Two primary issues minimize the effectiveness of hearing aids: 1  When the primary auditory cortex does not receive regular stimulation, this part of the brain loses cells which process sound.
https://en.wikipedia.org/wiki/Hearing_aid
People with hearing loss can benefit from the use of hearing devices, such as hearing aids, cochlear implants, and other assistive devices. They may also benefit from speech therapy, aural rehabilitation and other related services.
http://www.who.int/mediacentre/factsheets/fs300/en/
1 Half of all cases of hearing loss are avoidable through primary prevention. 2  People with hearing loss can benefit from hearing aids, cochlear implants and other assistive devices; captioning and sign language; and other forms of educational and social support.
http://www.who.int/mediacentre/factsheets/fs300/en/
Hearing aids are incapable of truly correcting a hearing loss; they are an aid to make sounds more accessible. Three primary issues minimize the effectiveness of hearing aids: 1  The occlusion effect is a common complaint, especially for new users.
https://en.wikipedia.org/wiki/Hearing_aid
Air conduction hearing aids require the use of an ear mold, which may be problematic in patients with chronic middle ear and ear canal infections, atresia of the external canal, or an ear canal that cannot accommodate an ear mold.
https://www.healthnet.com/static/general/unprotected/pdfs/national/policies/BoneAnchoredHearingAid.pdf
A hearing aid or deaf aid is an electroacoustic device which is designed to amplify sound for the wearer, usually with the aim of making speech more intelligible, and to correct impaired hearing as measured by audiometry.
https://en.wikipedia.org/wiki/Hearing_aid
1 People with hearing loss can benefit from hearing aids, cochlear implants and other assistive devices; captioning and sign language; and other forms of educational and social support. 2  Current production of hearing aids meets less than 10% of global need.
http://www.who.int/mediacentre/factsheets/fs300/en/
In the United States, Hearing aids are considered medical devices and are regulated by the Food and Drug Administration (FDA). Ordinary small audio amplifiers or other plain sound reinforcing systems cannot be sold as hearing aids.
https://en.wikipedia.org/wiki/Hearing_aid
1 Hearing loss may result from genetic causes, complications at birth, certain infectious diseases, chronic ear infections, the use of particular drugs, exposure to excessive noise and ageing. 2  Half of all cases of hearing loss are avoidable through primary prevention.
http://www.who.int/mediacentre/factsheets/fs300/en/
what medical classification are hearing aids
Hearing aids are an aid to make sounds more accessible. The  medical classification of hearing aids are an aid to make sounds more accessible.