CMAA Practice Exam 2025 – Complete Guide for Exam Prep

The correct answer relates to the requirement for obtaining a Medicare patient’s signature on an Advance Beneficiary Notice (ABN) specifically when services are not considered "medically necessary" by Medicare. The ABN is a crucial form used to inform patients that Medicare may not pay for a service or item because it is not deemed necessary.

The patient's signature on the ABN indicates understanding and acknowledgment of this potential denial of coverage. This process ensures that patients are aware they may have to bear the financial responsibility for services they choose to receive that Medicare may not cover, particularly when the provider anticipates that Medicare might deny coverage due to concerns about medical necessity.

In regard to the other options, while providers may deem some services unnecessary, not all services require an ABN just because a provider considers them unnecessary. Additionally, not all services covered under Part A would require an ABN, as those are typically related to inpatient hospital stays and skilled nursing facilities, which often have their own criteria for coverage. Finally, the requirement for an ABN is not limited solely to outpatient services as it can also apply to various outpatient and non-inpatient services. Thus, the focus remains squarely on the determination of medical necessity, making this the correct choice.