Which information is entered in CMS-1500 Blocks 9-9d on the primary insurance claim?

The information entered in CMS-1500 Blocks 9-9d pertains to the coordination of benefits, specifically regarding the relationship of any other insurance plans that may be involved in a claimant's medical coverage. These blocks are used to indicate whether there is a supplemental insurance plan that might provide additional coverage beyond the primary insurance.

In detail, Block 9 is where you specify any other insurance coverage the patient might have, and Blocks 9a, 9b, 9c, and 9d allow for additional information regarding that insurance, such as the policyholder's information and the relationship to the patient. Since the question specifically asks about the primary insurance claim, identifying any supplemental plans in these blocks is essential for ensuring that all potential coverages are accounted for during billing and claims processing.

The other options, while related to the CMS-1500 form, do not accurately describe the purpose of Blocks 9-9d. For instance, the billing entity generally involves the provider's or practice's information and does not belong in these blocks. Primary insurance would typically be information provided in other sections of the form, as would the employer's tax identification number, which is not entered in these specific blocks. Thus, identifying supplemental insurance accurately reflects the