I believe what you need is a PageRef to a bookmark.
From Allen Wyatt on tips.net
Word includes the capacity to add cross-references to page numbers in your document. For instance, you can insert a field that will automatically refer to a bookmark on another page. If the page number containing the bookmark changes, the page number cross-reference changes as well. To insert a page number cross-reference, follow these steps:
Insert a bookmark on the page containing the information you want to cross-reference.
Position the insertion point where you want the cross-reference to occur.
Press Ctrl+F9 to insert field brackets. Make sure the insertion point stays between the brackets.
Type pageref followed by the bookmark name used in step 1.
Press F9 to update the field information.