Defense Dept. weighs commercial vs. open-source EHR

Will the Defense Department buy a commercial electronic health-record system and consummate one of the largest healthcare information technology deals in U.S. history?

Or will the sprawling, 56-hospital, 361-clinic Military Health System line up with the Veterans Affairs Department and use a modified version of the VA’s venerable VistA EHR, an open-source system that has a strong track record in VA facilities?