Final answer:
Block 27 on the CMS-1500 claim form is used for the acceptance of assignment of benefits. This indicates whether the provider agrees to accept the Medicare-approved amount as full payment. Other blocks mentioned serve different functions.
Step-by-step explanation:
On the CMS-1500 claim form, the block used to indicate the acceptance of assignment of benefits is Block 27. This block is where the provider indicates whether they agree to accept assignment of Medicare benefits, which implies that the provider agrees to accept the Medicare-approved amount as full payment for covered services. It should be noted that the blocks mentioned (24E, 24J, 14, 18) serve different purposes on the CMS-1500 form. Block 24E is for the diagnosis pointer, Block 24J is for the rendering provider identification number, Block 14 is for the date of current illness, injury, or pregnancy (LMP), and Block 18 is for hospitalization dates related to the current services.