The HIT Policy Committee and its Meaningful Use Working Group will be defining meaningful use very soon. Although I have no inside knowledge of what meaningful use will be, I think it will likely include several elements of health information exchange.To me, health information exchange is three things1. Policies for exchange which protect confidentiality, ensure compliance with regulations, and meet the service expectations of stakeholders.2. Workflow which supports the business processes of payers, providers and patients.3. A technical architecture which implements the workflow.To achieve meaningfully useful health information exchange, Massachusetts has recently convened three committees under the auspices of the Eastern Massachusetts Healthcare Initiative. During May and June, we'll...