I don't think it matters that APD isn't specifically mentioned on the IEP - the important thing is your ds is qualified under a meaningful category (hearing impaired) and he has the accommodations he needs included. The diagnoses our ds has from his private neuropsych etc aren't listed on his IEP; he's qualified under the category that fits his educational needs (SLD in writing). We will always have his private diagnosis paperwork to provide either to school or other institutions if there is a need to explain the details of his challenges.
There are two things you can do - one I'd do for sure - be sure a copy of his outside private evals are given to the school for his file. Two - if you want to see the diagnosis in the IEP, you can add a brief note about it yourself under the section for parents' notes (this appears on the first page of our form, and from what I've heard, it's a standard part of most IEP forms).
Congrats on getting the IEP updated!
polarbear
