An ONC-specified formatting standard for EHRs has actually limited the ability to exchange data between the Defense and Veterans Affairs departments because of the flexibility it allows, an experience that "foreshadows many of the things that we can expect coming up in stage 2 of meaningful use certification," said ONC official Dr. Doug Fridsma. "Things that are underspecified can sometimes get us into trouble when we get to the level of interoperability," he said.

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