Modern Healthcare Editor David Burda previews the Healthcare Information and Management Systems Society's 2012 annual conference in Las Vegas. Keynote speeches from Twitter co-founder Biz Stone, ONC head Dr. Farzad Mostashari and HHS Chief Technology Officer Todd Park are expected to highlight the conference, which runs Feb. 20-24. Attendees will look to ONC and CMS officials for guidance on Stage 2 meaningful-use requirements and the delayed timeline for ICD-10 implementation.