The GUDID database contains two new fields related to a previous device identifier, DI.
The fields are Previous DI Number and Issuing Agency. Previous DI Number means a “Device Identifier assigned to a version/model of a medical device prior to the assignment of a new/substitute device identifier to that same version or model, without any changes to the device itself, due to merger and acquisition activity.” The Issuing Agency in this case, is the name of Previous DI Issuing agency.