Seeking understand and help to serializing MS-word and .pdf documents..

What I do understand:

• 10 digit system to start
• Include date (02-15)
• Include numerical category in front (0-10)
• Include numerical series generator at end (-#####)
• Include this unique s/n on the document and file name (for search)
• The index is by numerical category

May big question is :
Does MS-word already have a document serial number generator? Or
How can we write a script for MS-word to do is function?