On the CMS-1500 claim form, which block is used to accept assignment of benefits?

• A. Block 27
• B. Block 17
• C. Block 9
• D. Block 32

Answer: (A)

Assignment of benefits means the patient authorizes the insurer to pay benefits directly to the provider. On the CMS-1500 form, this authorization is indicated in the box specifically designated for assignment of benefits. Marking that box communicates to the payer that the provider will accept the payment as payment in full or as arranged, reducing the need for the patient to handle the payment receipts or reimbursements. If that box isn’t marked, the payer may send payment to the patient or to another party, and the provider would have to pursue reimbursement separately. Other boxes on the form capture different information (like patient details, dates of service, or diagnoses), but they do not convey the assignment of benefits.