Current text: An intensional value set is typically algorithmically defined. That is, the code group is defined as a rule e.g. all codes with the word diabetes in their description. The key benefit of intensional code groups is that they can be dynamically updated. Dynamic updating helps healthcare organizations keep current when new drugs (and their associated codes) become available or codes for diseases and other clinical concepts change. An intensional value set designed to contain all of the drugs in the beta blocker category can automatically receive a new beta blocker's code as soon as it hits the market. Change to this value: An intensionally defined value set may be algorithmically defined e.g. all codes with the word diabetes in the description. A key benefit of intensionally defined value sets is that their expansion can be dynamically updated without changing the value set definition. This helps healthcare organizations keep current for example, when new drugs (and their associated codes) become available or codes for diseases and other clinical concepts are added.