Which former form does the MSN replace?

The correct answer is the EOMB, or Explanation of Medicare Benefits. The Medicare Summary Notice (MSN) was introduced to provide Medicare beneficiaries with a clearer and more uniform understanding of their medical services and the benefits they received. The MSN details the services provided, the costs incurred, the amount that Medicare paid, and any remaining balances that the beneficiary may need to pay.

This change aimed to enhance transparency and comprehension of Medicare operations for beneficiaries, making it easier for them to understand their coverage and any financial responsibilities. The EOMB was the previous format, and the transition to the MSN was part of efforts by Medicare to improve communication and service to beneficiaries. Other options such as the CMS Form 1500 are specific claim forms used by healthcare providers to bill for services, while the Medicare Benefit Summary and the MMPR do not represent the form that the MSN directly replaces. Thus, the MSN directly correlates to its predecessor, the EOMB.