Organization key when the RAC requests arrive.
D032982:Contracts; D004469:Economics, Hospital; D005377:Financial Management, Hospital / Q000592:standards*; D007345:Insurance Claim Review; D006278:Medicare / Q000191:economics; D012308:Risk Management / Q000458:organization & administration*; D014481:United States; D014600:Utilization Review / Q000191:economics*