A team led by Leidos Holdings Inc. has claimed a contract worth more than $4.3 billion to upgrade the Pentagon’s electronic health records system, the Department of Defense announced Wednesday. The Leidos-led team won the Defense Healthcare Management Systems Modernization contract for a system used to manage more the health records of than more than 9.6 million current and retired military service members, according to the program office. Along with Reston-based Leidos (NYSE: LDOS), the team…