42 CFR 457.570 - Disenrollment protections.
(b) The disenrollment process must afford the enrollee an opportunity to show that the enrollee's household income has declined prior to disenrollment for non payment of cost-sharing charges, and in the event that such a showing indicates that the enrollee may have become eligible for Medicaid or for a lower level of cost sharing, the State must facilitate enrolling the child in Medicaid or adjust the child's cost-sharing category as appropriate.
(c) The State must ensure that disenrollment policies, such as policies related to non-payment of premiums, do not present barriers to the timely determination of eligibility and enrollment in coverage of an eligible child in the appropriate insurance affordability program. A State may not -
(3) Require the collection of past due premiums or enrollment fees as a condition of eligibility for reenrollment once the State-defined lock out period has expired, regardless of the length of the lock-out period.