Procedure Codes can be set to have the Fee be available or not for editing from the Ledger/Treatment Plan.
At Setup > Procedure Codes > Procedure Codes > Edit
Administrators can uncheck the field “Fee Editable” so that it cannot be edited by Users.
By default all Procedure Codes are checked.
If the fee is editable and the user has editing rights, the User can edit the fees on the Transaction Entry and Treatment Plan screens.