What determines the use of MDE for dual-eligible beneficiaries?

The correct choice relates specifically to the application date because it plays a crucial role in determining the use of the Medicare Savings Program for dual-eligible beneficiaries. When a dual-eligible beneficiary applies for assistance, their eligibility for certain programs, including those that may affect their Medicare coverage, is often established based on this application date. This helps streamline enrollment in benefits and services designed for individuals who qualify for both Medicare and Medicaid.

When beneficiaries apply, it sets in motion the potential coverage, and any subsequent actions or benefits are often contingent upon that specific date. Thus, knowing when an individual applied can help determine their rights and options concerning Medicare services, including the special protections and benefits available to dual-eligibles.

The other factors listed, such as the month of enrollment, effective date of the plan, or Medicaid status, while relevant to overall eligibility, do not specifically dictate the use of MDE as clearly as the application date does. The application date is key in initiating the process and determining eligibility for dual-eligible benefits under Medicare.