This branded term refers to logical statements that can be evaluated to true or false, with contingent clinical content.

All rules have at least 4 elements:

  1. Property - element of a health record or observation that can be evaluated by criterion-based logic.

  2. Operator - criterion by which to test the relationship of the property to a value (e.g., equals, not-equals, etc.)

  3. Value - the specific value of the property to test with the given operator.

  4. Logic - connection between multiple property-operator-value clusters (e.g., AND, OR, NOT, nesting)


  • Master File: CER

  • Tool: