When a payer pays interest on a claim, before applying the payment;
1. Open the claim.
2. Add a service line of 'Interest' for the amount they are paying.
**Always use the same Srvc Date (DOS)**
3. Click on 'Add' all the way to the left on the line, this will add it to the claim.
4. Uncheck 'Print/Export'.
5. Save and close.
6. Now you can apply the interest payment to the appropriate service line.