ClearLight Partners, a California-based private equity firm, has agreed to sell The Outsource Group (TOG) to Parallon Business Solutions, a wholly-owned subsidiary of HCA Holdings (NYSE: HCA). The transaction is expected to close by the end of this month. Based in St. Louis, TOG provides revenue cycle management services to more than 160 hospital clients and physician practices across 38 states. Annual revenues for the company exceed $100 million. It has been a portfolio company of ClearLight since December 2004.