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Now that a 5-Star plan has been found, you may enroll into the 5-star plan using the 5-star enrollment code. Do not enroll into any plans that are less than 5-stars using the 5-star code including 4.5 star plans or plans that are not yet rated.
You may NOT use 5-star enrollment code if they are currently in a 5-star plan. If this is the case, then keep digging for a valid enrollment period.