A Minnesota-based eating disorder treatment center once again is accepting patients insured by Wellmark Blue Cross Blue Shield, but with caution. BACKGROUNDThe Emily Program in Minneapolis serves about 6,000 patients annually through intensive outpatient and residential treatment programs. Last fall, TEP stopped accepting Wellmark beneficiaries after continued billing issues, said Jillian Lampert, chief strategy officer for the center.Intensive treatment is expensive, so TEP requires patients to pre-authorize coverage of their treatment with their insurer, and TEP had worked with Wellmark beneficiaries in the past.