Part D Plan Auto Assignment Indicator

SAS Name
AUTO_ASSIGNED_FLAG

This variable Indicates that the beneficiary had one or more Part D enrollment transactions that span the reference year where the Enrollment Type Code indicates auto-assignment or re-assignment (Enrollment Type Code of A or H) regardless of whether they opted-out of the plan they were assigned to.

Comments

The Enrollment Type Code variable (SAS name is ENRLMT_TYPE_CD) appears in the Part D Beneficiary Plan Election file.

Source: CMS Common Medicare Environment (CME) - derived 

Code Code value
Y yes, auto-assigned to the Part D Plan
Null/missing