According to HHS, nine states are responsible for 60 percent of children’s coverage losses between March and September.

HHS wants states with the highest rates of children dropped from Medicaid to use certain federal rules that make it easier to get families back on coverage.

In letters sent Monday to the governors of Arkansas, Florida, Georgia, Idaho, Montana, New Hampshire, Ohio, South Dakota and Texas, HHS Secretary Xavier Becerra urged the states to take up more of options CMS has offered to ensure coverage. The options include allowing states to use enrollee information they have to auto-renew coverage.

HHS also issued new guidance for states Monday, including an option to give kids an additional 12 months to get on the rolls. That option is available through 2024, CMS Administrator Chiquita Brooks-LaSure told reporters.

Becerra also asked the states to remove barriers to Children’s Health Insurance Program enrollment for children no longer eligible for Medicaid, reduce call center times for families and expand their Medicaid programs if they haven’t already.