# ELM - Clinical Quality Language Specification v2.0.0

* [**Table of Contents**](toc.md)
* **ELM**

## ELM

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| :--- | :--- |
| *Page standards status:*[Normative](http://hl7.org/fhir/R4/versions.html#std-process) | [Maturity Level](http://hl7.org/fhir/versions.html#maturity): N |

Expression Logical Model Schema Files are available here:

[expression.xsd](elm/schema/expression.xsd) - Base expression schema

[clinicalexpression.xsd](elm/schema/clinicalexpression.xsd) - Clinical extensions to the base schema

[cqlannotations.xsd](elm/schema/cqlannotations.xsd) - Cql annotations schema for including CQL source in ELM libraries

[library.xsd](elm/schema/library.xsd) - Library container schema

XML Types schema that defines CQL system types in an XML schema:

[types.xsd](elm/schema/types.xsd)

Model Info schema is available here:

[modelinfo.xsd](elm/schema/modelinfo.xsd) - Model info schema used by translation tooling to define model structures

> NOTE: Model info is an implementation detail included here for convenience, it is not a normative part of the CQL specification.

