HARRISBURG — A new agreement will grant Highmark insurance customers in-network access to UPMC facilities, included those in Altoona and Bedford, for another decade. Western Pennsylvania health care behemoths UPMC and Highmark struck a deal announced Monday that averts the looming breakup of their business relationship and prevents disruption and higher costs for some patients. The contract will extend Highmark insurance customers’ in-network access to UPMC doctors and hospitals for another 10 years, access that had been scheduled to expire Sunday with the end of a five-year, ...