Get advice on billing issues ranging from logging onto DDE to avoiding duplicate file rejections. Switching to a new Medicare contractor can be a painful process, but now home health agencies and hospices have some concrete help to smooth the way. New Home Health & Hospice Medicare Administrative Contractor (HHH MAC) CGS has issued multiple job aids on a range of billing topics at http://cgsmedicare.com/hhh/edi/JobAids.html. Subjects include accessing multiple provider numbers via DDE, a quick reference tool of DDE function keys, and how to avoid duplicate file rejections. Tip: Among the advice CGS (formerly CIGNA) doles out are instructions on using the space bar in DDE. "The space bar should never be used to erase data," CGS says in its DDE function key tool. "If an error is keyed, press Delete to erase an error." Also: The DDE system will require you to enter a new password periodically, CGS says in its aid addressing FISS and DDE system logons and passwords. "Passwords expire after 30 days," CGS says. "Providers will be required to enter a new valid password."