Block 27 on the CMS-1500 claim form is used to indicate which of the following?

• A. Assignment of benefits
• B. Primary payer name
• C. Billing provider's NPI
• D. Claim submission date

Answer: (A)

Block 27 indicates Assignment of Benefits. This shows whether the patient has authorized the insurer to pay the provider directly. When this assignment is in place, the payer can send payments straight to the provider for covered services, and the patient would owe only any remaining amounts such as nondeductible charges, deductible, or coinsurance. If there’s no assignment, the patient may need to pay upfront and then file or seek reimbursement themselves. This is why the block is about who receives payment, not the payer’s name, the billing provider’s identifier, or the claim submission date, which are documented in other parts of the form.