The value for the "Accept Assignment" field on the CMS 1500 Claim Form is "Yes" by default.

If you need to make it check "No" then you need to set the Claim Override for it. 

Follow these steps to change it in Claim Overrides:

1. Make sure you are on the Claim Info tab on the Charges screen - where you would print the CMS 1500 form. 

2. Select the "Other" tab and set the "Provider Accepts Assignment Code" to "Not Assigned"

Be sure to click back on Claim Details and answer YES to the prompt to save the Claim Overrides.