Is there a difference between the definition of Indian/Native American for Medicaid and the Exchange. Can you clarify what the difference is?

For purposes of eligibility for coverage through the Marketplace, the Affordable Care Act defines Indians as individuals who are members of a federally recognized Indian Tribe. The definition of Indian currently in use for Medicaid beneficiaries follows a broader definition that includes descendants of Indians and all American Indians and Alaska Natives. As a result, American Indians and Alaska Natives who are not members of an Indian tribe would not be eligible for exemptions available through an Exchange, including from individual responsibility payments, qualification for special monthly enrollment periods and cost-sharing reductions.