Final answer:
The period of time where an eligible customer can enroll or disenroll from an MA or PDP plan is during the Annual Enrollment Period (AEP) which usually runs from October 15th to December 7th each year. There are also Special Enrollment Periods (SEPs) that can be triggered by certain life events. Eligible customers should be aware of these enrollment periods to avoid coverage delays or penalties.
Step-by-step explanation:
The period of time where an eligible customer can enroll or disenroll from an MA or PDP plan is during the Annual Enrollment Period (AEP). AEP usually runs from October 15th to December 7th each year. During this time, eligible customers can choose to enroll in a Medicare Advantage (MA) plan or a stand-alone Prescription Drug Plan (PDP), or make changes to their existing plans.
There are certain exceptions where an eligible customer can enroll or disenroll outside of the AEP. These exceptions are known as Special Enrollment Periods (SEPs), and they are triggered by life events such as moving to a new area, losing existing coverage, or qualifying for a Low-Income Subsidy (LIS) program.
It's important for eligible customers to understand the AEP and any SEPs that may apply to them, as missing these enrollment or disenrollment periods could result in a delay in coverage or penalties.