Where a primary source of confusion starts to creep into the preliminary eligibility determination for either Medi-Cal or Covered California hinges on when the new FPL amounts are considered for eligibility. This is where the rules concerning determining eligibility are not necessarily aligned between Medi-Cal and Covered California. The rules put forth by the ACA govern how Covered California applies the FPL amounts for determining eligibility for the Premium Tax Credit subsidy, which are slightly different than Medi-Cal. The Department of Health Care Services, the agency that administers Medi-Cal, must abide by older federal rules for eligibility determinations.