Introduction

This document includes a semi-structured representation of evidence-based narrative guidelines for breast cancer screening. Semi-structured representation, also known as Level 2 representation, of guideline content and recommendations is essential for the development of computable clinical decision support (CDS) artifacts. It includes:

1. High-level and mid-level flow diagrams that visually illustrate portions of the guidelines.
2. A brief description of each portion of the CDS logic.
3. Semi-structured logic statements that list required clinical concepts, inclusion criteria, exclusion criteria, events (decision points), and actions (output, e.g. recommendations).

How to Navigate the Specification

Start with Pathway. This page includes:

• High-level flow diagram, which visually illustrates the main logic paths translated, applicable guidelines, and order of precedence and dependencies among logic paths.
• A combined view of mid-level flow diagrams, which provide a more detailed view of each logic path and how they relate to each other.

Each logic path has a dedicated page under Logic Paths, which includes the mid-level flow diagram for the path, as well as semi-structured logic statements. These may refer to:

• Data elements: logic statements used multiple times across the specification; and
• Terminology: clinical concepts that will eventually be represented by lists of codes.