Electronic clinical decision support (CDS) requires multiple ‘parts’ and ‘pieces’ to work effectively within computer systems – ‘parts’ include processes for display and notification to providers, frameworks for organizing information, hyperlinks, data gathering used in rule evaluation, rules engines, data standards, surveillance, output measures, and outcome measures. As we work to create active alerting rules that can be shared among hospitals and within systems, it is crucial for pharmacists to understand the ‘parts’ and ‘pieces’ and how they work together to best support medication use. Many vendor systems supply application level tools which support some of these parts and processes and allow pharmacists to configure rules within these frameworks, and understanding these as ‘parts’ allows pharmacists to better manage CDS locally and share information. This session will address (1) active work being done by some pharmacists in this arena as well as (2) data standards and the use of RX Norm to identify medications across CDS systems.