In which situation does Medicare pay as the secondary payer?

• A. For all injuries related to Workers' Compensation
• B. Only for injuries not covered by any other insurance
• C. When liability insurance is the primary payer
• D. For preventive services only

Answer: (C)

Medicare pays as the secondary payer when liability insurance is the primary payer. This situation occurs because Medicare generally serves as a secondary insurance when there is another primary source liable for the payment of the medical expenses. In cases where liability insurance (for instance, in an accident or injury scenario) is responsible for covering the incurred costs, Medicare will step in to cover additional eligible expenses once the primary payer has fulfilled its obligations.

Understanding the distinctions among various insurance roles is crucial. For instance, workers' compensation typically holds primary responsibility in cases of work-related injuries, so Medicare would not be secondary in those scenarios. Furthermore, preventive services do not affect the order of payment, as Medicare does not limit its secondary payer role solely to preventive services or limit it based on whether other insurances cover non-injuries. This highlights the broader context of how Medicare interacts with other forms of insurance in diverse circumstances. Thus, the correct answer reflects the established protocol that designates liability insurance as the primary payer, allowing Medicare to assume its secondary role.