HL7 Version 3 GELLO Implementation Guide: Clinical Decision Support; Model Definition Language for GELLO, Release 1

A model definition language for clinical decision support (CDS) is a grammar for representing clinical information inputs and outputs that can be used by CDS engines and local clinical information systems. This model definition language is needed to enable the design and development of scalable CDS resources that can be used across multiple healthcare institutions and health information systems. GELLO is a standard language that can be used with the model to execute standardised clinical decision support logic.

This document defines a grammar for defining the classes and data types that can be used by a GELLO compiler or any other rule execution engine or authoring environment, to ensure good interoperability of CDS logic between institutions.

Main sections:

· Executive summary

· Grammar for GELLO class definitions (Normative)

· GELLO base types class definition (Informative)

· ISO21090 data types definition (Informative)

· vMR definition example (Informative)

· Detailed clinical model example (Informative)