If you encounter Additional Claim required, this means the claim is suspended and the claimant must reactivate the claim for payment. There can be several circumstances in which your claim will close and you need to file an additional claim.
Filing an additional claim is required when:
If you see “Additional Claim Required” on your certification, go to your account page, click the "View all Claims" hyperlink then you will see under alerts “File a claim.” You will be taken to the Reopen/Additional claim filing page to answer a few questions.