Alexa48:
Much of the help you are looking depends on what type of business you are in: if you are already a covered entity under HIPAA (in short, a health plan, clearinghouse, or provider), then you have to look at your responsibilities as a covered entity. If you are not a CE, then you need to look at your responsibilites as a plan sponsor.
I suggest starting with
www.ebia.com as a great source of information. I also suggest you look at the regs under164.530(k) for the information regarding health plans. You can find this under
http://www.bricker.com/attserv/practice/hc.../hipaaindex.asp. This is also a great place to view the regs in an organized fashion.
Your carrier may or not be a CE also, depending on if they meet the requirements of the definition of a group health plan. For instance, TPAs may or may not be; they need to make that decision and you need to be asking them.
Since it is your consultant, i would do more research with your carrier, especially since you are self funded. If you need a sample of any BA contracts, contact me offline and I can provide them to you.