Block 28 is for secondary claims and records what?

• A. The total amount the patient’s primary insurance paid
• B. Total charges for all services
• C. The total amount the primary insurance paid
• D. Leave blank

Answer: (A)

Block 28 is used when a claim has a secondary payer. It records the amount that the primary insurance paid for the service. This lets the secondary payer know how much the primary plan contributed, so they can determine any remaining responsibility. For example, if the service charged $200 and the primary insurer paid $150, Block 28 would show 150. The secondary payer then uses that information to calculate its payment or the patient’s remaining balance. Total charges and any blank status are handled in other parts of the form, and Block 28 is specifically about the primary payment amount for coordination of benefits.