Field 9

CMS-1500 Field 9Field 11 often generates questions about Field 9. Field 9 is only for secondary insurance information and is not required. Participating providers may fill out Field 9 to have the claim crossed over for a secondary insurer to pay.

If you wish, you may complete Field 9 for secondary insurer information or for your office records. Medicare does not monitor Field 9 unless you are requesting to have the claim crossed over for payment.