EDEKA is a small operator of mobile in Germany and they do not have much USSD codes as they dont offer that many services. You will also note that they are unique to Germany and so are their USSD codes. They only offer 3 USSD codes and are not in the category of Vodafone Germany or O2 Germany in size.
USSD codes for EDEKA Germany
|* 100 #||Account Manager|
|* 100 * recharge code #||Charge the account with a prepaid card|
|* 102 #||Cost of the last call|