In Illinois, every administrative child support case has an administrative case number. Every document you receive from the Department of Family Services (HFS) will have the case number written on it.
Each administrative case number has an 'H'. For example:
If you do not know what your administrative case number is, you can call HFS at (1-800-447-4278).
If the documents you received for your case don't have an administrative case number, they may have a docket number instead.