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• Within seven calendar days of the receipt of a complete paper enrollment request, the plan must provide the individual with a written notice that acknowledges receipt of the completed enrollment request and indicate that the enrollment will take effect on January 1 of the following year (refer to MA Exhibits 4, 4a, 4b, 4c, 4d, and 4e; Part D Exhibits 2, 2a, and 2b for model notices).

• Submit all transactions to CMS systems (MARx) on the first day of the AEP with an “application date” of October 15. Paper enrollment requests received from October 1 through October 14 must be submitted with an “application date” of October 15. Prior to the AEP, if an individual has submitted more than one AEP paper enrollment request, the individual will be enrolled in a plan based on the first application that is processed in MARx.

• Once the plan receives a MARx Daily Transaction Reply Report (DTRR) from CMS indicating whether the individual’s enrollment has been accepted or rejected, it must meet the remainder of the requirements (e.g., sending a notice of the acceptance or rejection of the enrollment within 10 calendar days following receipt of the DTRR from CMS) provided in § 50.9.

NOTE: If plans receive an incomplete, unsolicited AEP paper enrollment request prior to the start of the AEP, they must follow existing guidance for working with individuals to complete the applications (refer to § 50.3).

30.4 – Medicare Advantage Open Enrollment Period (MA OEP) 42 CFR §§ 422.62(a)(3), 422.62(d)(1), 422.68(c), and 423.38(c)(26)

Occurs: January 1–March 31 every year and for a three-month period upon new entitlement to both Medicare Part A and B (which generally corresponds to an individual’s ICEP—see examples below).

Effective Date: First of the month following the plan’s receipt of the enrollment request.

Who Can Use: Individuals enrolled in either MA-PD or MA-only plans.

Changes Permitted: • Disenrollment from an MA plan (MA-only, MA-PD) in order to switch to Original Medicare (with or without a stand-alone Part D plan) • Enrollment into a different MA plan (MA-only, MA-PD)

Coordinating Part D SEP

There is a coordinating Part D SEP available to enroll in a standalone Part D plan for the same effective date, when an individual changes from an MA-PD to Original Medicare.

Examples: