If you want to add an alternative pay-to address or lockbox (P.O. Box) address in box 33 on the HCFA-1500 Form, follow the steps outlined below:
1. Hover your cursor on the Account tab and select Offices.
2. Click on the Edit button corresponding to the office for which you want to edit the address.
3. Click on the Billing tab.
4. Scroll down and check the option Use alternate pay to address for HCFA.
5. Once the option is checked, the fields to enter the address will become available for you to enter the information.
6. After entering the address, click on Save.
The address which you entered here will appear in box 33 on the HCFA-1500 form.