This case has to do with whether physicians, hospitals, and pharmacies have the right to sue California of it's cuts to Medicaid payments. California reduced reimbursements for Medicaid in 2008 and 2009. Medical providers challenged this decisions but they were blocked by the district courts preliminary injunctions.
"The 9th Circuit upheld the injunctions, finding that the state failed to conduct sufficient studies before cutting the rates. California appealed to the Supreme Court." The Argue date was October 3, 2011. The decision was made February 22, 2012. When the decision was made, 5 vacated and 4 remanded.