D2 Denial Code (Deactivated) – Use 16

D2 is a retired claim adjustment reason code. Payers stopped using it on 10/16/2003. Current remittances use 16 instead.

Seeing D2 on a Remittance?

D2 was retired effective 10/16/2003 and should not appear on new remittances.
Payers now report this situation with 16 — check that page for current guidance.
Official retirement note: Use code 16 and remark codes if necessary.
If D2 appears on an old ERA you are reworking, interpret it per the remittance date, then follow the current code's guidance for any corrected claim.