The Centers for Medicare and Medicaid Services (CMS) has developed a new brochure on the EHR Incentive Programs, here is an updated version: https://www.cms.gov/newsroom/fact-sheets/2019-medicare-electronic-health-record-ehr-incentive-program-payment-adjustment-fact-sheet-hospitals

Beginning in 2014, there are several changes to the Stage1 Electronic Health Record (EHR) Incentive Programs
meaningful use objectives, measures, and exclusions for eligible professionals, eligible hospitals, and critical access hospitals (CAHs).

These changes took effect on October 1, 2013, for eligible hospitals and CAHs and on January 1, 2014, for eligible professionals. Although some of the changes to meaningful use objectives, measures, and exclusions are optional, others are required. The document gives an overview of the Stage 1 changes that apply in 2014.