How long can the enrollment period last after CMS approval in the case of a Part D plan error?

When there is a Part D plan error that requires correction and the Centers for Medicare & Medicaid Services (CMS) approves an extension for enrollment, the enrollment period can last for up to 2 months. This ensures that beneficiaries who may have been affected by errors in their Part D plan decisions have sufficient time to make the necessary changes or complete their enrollment without being penalized. This policy is designed to be supportive and accommodating for individuals who might miss out on their choices due to circumstances beyond their control, such as administrative errors or misunderstandings regarding their coverage options. The limited extension period aligns with the intent to balance timely access to necessary medications while still ensuring that beneficiaries make informed choices about their healthcare coverage.