It appears as if you sent the claim off to the wrong insurance company.
You need to change the insurance company associated with the insurance card in Therabill. You do this from the edit insurance card form. The edit insurance card form can be reached from the edit client form. However, if you are on the claim error page in Therabill, you can get to the edit insurance card form by clicking the edit icon next to the insurance card on the right hand side of the claim error page. On the edit insurance card form, change the insurance company in the Ins Company text box. Remember to save your changes. Back at the claim error page, click the Resubmit Electronically button at the top of the claim error page and then from the options that appear, choose to send it to the insurance card associated with the new insurance company.