I'm querying the API to get the categories and subcategories for a page, and I'd like to be able to exclude hidden categories and administration categories from the result.  The queries that I currently use look like this:

Category Pages:

http://en.wikipedia.org/w/api.php?action=query&titles=Category:$catname&cmtitle=Category:$catname&list=categorymembers&cmlimit=500&prop=categories&format=php

Non-Category Pages:

http://en.wikipedia.org/w/api.php?action=parse&page=$pagename&prop=text|categories&redirects&format=php

where $catname and $pagename are replaced by the page titles.  Is there a way to either exclude categories that are hidden categories, or that are subcategories of the "Category:Hidden categories" category?

Thanks,

Robert