The seven health boards should have published policies about improving access to services in December.
The director of Action on Hearing Loss Cymru said they were not meeting legal obligations from the Equality Act.
But the health boards said they were striving to improve access for people with hearing impaiments
Meanwhile, a separate report shows that 90% of GPs in Wales are failing to provide reasonable alternative methods for people with hearing impaiments to book appointments.
The Equality Act 2010 says that if someone is at a substantial disadvantage of accessing services because of a disability, reasonable adjustments must be made to allow access.
Read more: http://www.bbc.co.uk/news/uk-wales-21281708