It's not a label. It's a description of your hearing.
Since "hard of hearing" ranges from mild to profound" people don't know how bad your hearing is if you say HoH. Since mine profound I usually add the deaf part to let them know how bad it is.
If the CI I'm getting in my worse ear works as well as i hope then I may go back to just saying HoH. I know I'm still deaf, but when I'm dealing with others I'll be HoH since I'll have the CI on.