RightCHOICE Managed Care, Inc. reports that Healthcare Service Corporation (HCSC), which operates the Blue Cross and Blue Shield plans in Illinois and Texas, disclosed its purchase of 695,800 shares of RightCHOICE stock. In its filing, HCSC said that it intends to seek some form of alliance or combination with RightCHOICE and its parent company, Blue Cross and Blue Shield of Missouri. HCSC also said it believes any combination or alliance with the companies may be effected only with the approval of the boards of directrors and the applicable regulatory and judicial authorities.