Follow the steps below to reactivate a Diagnosis Code.
Select Customer Setup > Codes... > Diagnosis Codes.
Place a check in the Include inactive codes box.
Use the Search field to find the diagnosis code by the code name or description. Or use the Show All button to view all codes.
Select the Diagnosis Code to reactivate.
Click OK “This diagnosis code is currently inactive.” displays.
Uncheck the Make this code inactive box.