You can increase your chances of successfully defending your claims against additional development requests if you follow some simple rules about how to submit your ADR response. Tip #1: Don't use staples or paper clips in your records, instructs HHH MAC NHIC in a message to providers. Instead, use a rubber band to bind each ADR (on top) with its pertinent medical records. Tip #2: Avoid mixing single- and double-sided documents. Remember that your ADR'd claim will receive denial code 56900 if NHIC doesn't receive records by day 45, the MAC says.