eCQM QICore Content Implementation Guide
2023.0.0 - CI Build

eCQM QICore Content Implementation Guide, published by cqframework. This guide is not an authorized publication; it is the continuous build for version 2023.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/cqframework/ecqm-content-qicore-2023/ and changes regularly. See the Directory of published versions

## : Primary Open-Angle Glaucoma (POAG): Optic Nerve EvaluationFHIR - XML Representation

Draft as of 2023-10-27

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    <Measure xmlns="http://hl7.org/fhir">
      <id value="POAGOpticNerveEvaluationFHIR"/>
      <meta>
        <profile
                 value="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/computable-measure-cqfm"/>
        <profile
                 value="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/publishable-measure-cqfm"/>
        <profile
                 value="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/executable-measure-cqfm"/>
      </meta>
      <text>
        <status value="extensions"/>
        <div xmlns="http://www.w3.org/1999/xhtml">
        <table class="grid dict">

                <tr>
                    <th scope="row"><b>Title: </b></th>
                    <td style="padding-left: 4px;">Primary Open-Angle Glaucoma (POAG): Optic Nerve EvaluationFHIR</td>
                </tr>

                <tr>
                    <th scope="row"><b>Id: </b></th>
                    <td style="padding-left: 4px;">POAGOpticNerveEvaluationFHIR</td>
                </tr>

                    <tr>
                        <th scope="row"><b>Download cql: </b></th>
                        <td style="padding-left: 4px;"><a href="Library-POAGOpticNerveEvaluationFHIR.cql">POAGOpticNerveEvaluationFHIR.cql</a></td>
                    </tr>

                <tr>
                    <th scope="row"><b>Version: </b></th>
                    <td style="padding-left: 4px;">0.0.004</td>
                </tr>

                <tr>
                    <th scope="row"><b>Url: </b></th>
                    <td style="padding-left: 4px;"><a href="Measure-POAGOpticNerveEvaluationFHIR.html">Primary Open-Angle Glaucoma (POAG): Optic Nerve EvaluationFHIR</a></td>
                </tr>

                <tr>
                    <th scope="row">
                        <b>

                                    short-name identifier:

                        </b>
                    </th>

                    <td style="padding-left: 4px;">

                            <p style="margin-bottom: 5px;">
                                <span>CMS143FHIR</span>
                            </p>

                    </td>
                </tr>

                <tr>
                    <th scope="row">
                        <b>

                                    version-independent identifier:

                        </b>
                    </th>

                    <td style="padding-left: 4px;">

                            <p style="margin-bottom: 5px;">
                                <span>urn:uuid:7b41a49e-61af-4a73-8dfd-a6a76e8e7c49</span>
                            </p>

                    </td>
                </tr>

                <tr>
                    <th scope="row">
                        <b>

                                    version-specific identifier:

                        </b>
                    </th>

                    <td style="padding-left: 4px;">

                            <p style="margin-bottom: 5px;">
                                <span>urn:uuid:dad4363e-52b2-4add-9740-fb79aaf65e74</span>
                            </p>

                    </td>
                </tr>

                <tr>
                    <th scope="row">
                        <b>

                                    endorser (NQF) identifier:

                        </b>
                    </th>

                    <td style="padding-left: 4px;">

                            <p style="margin-bottom: 5px;">
                                <span>0086e</span>
                            </p>

                    </td>
                </tr>

                <tr>
                    <th scope="row">
                        <b>

                                    publisher (CMS) identifier:

                        </b>
                    </th>

                    <td style="padding-left: 4px;">

                            <p style="margin-bottom: 5px;">
                                <span>143FHIR</span>
                            </p>

                    </td>
                </tr>

                <tr>
                    <th scope="row"><b>Effective Period: </b></th>
                    <td style="padding-left: 4px;">2024-01-01
                        ..2024-12-31</td>
                </tr>

                <tr>
                    <th scope="row"><b>Status: </b></th>
                    <td style="padding-left: 4px;">draft</td>
                </tr>

                <tr>
                    <th scope="row"><b>Date: </b></th>
                    <td style="padding-left: 4px;">2023-10-27 08:12:32+0000</td>
                </tr>

                <tr>
                    <th scope="row"><b>Approval Date: </b></th>
                    <td style="padding-left: 4px;">2023-08-14</td>
                </tr>

                <tr>
                    <th scope="row"><b>Last Review Date: </b></th>
                    <td style="padding-left: 4px;">2023-08-14</td>
                </tr>

                <tr>
                    <th scope="row"><b>Name: </b></th>
                    <td style="padding-left: 4px;">POAGOpticNerveEvaluationFHIR</td>
                </tr>

                <tr>
                    <th scope="row"><b>Publisher: </b></th>
                    <td style="padding-left: 4px;">American Academy of Ophthalmology</td>
                </tr>

            <tr>
                <th scope="row"><b>Author: </b></th>
                <td style="padding-left: 4px;">American Academy of Ophthalmology: <a href="www.aao.org">www.aao.org</a>, American Medical Association (AMA): <a href="https://www.ama-assn.org/">https://www.ama-assn.org/</a></td>
            </tr>

                <tr>
                    <th scope="row"><b>Description: </b></th>
                    <td style="padding-left: 4px;"><div><p>Percentage of patients aged 18 years and older with a diagnosis of primary open-angle glaucoma (POAG) who have an optic nerve head evaluation during one or more visits within 12 months</p>
    </div></td>
                </tr>

                <tr>
                    <th scope="row"><b>Purpose: </b></th>
                    <td style="padding-left: 4px;"><div><p>UNKNOWN</p>
    </div></td>
                </tr>

                <tr>
                    <th scope="row"><b>Copyright: </b></th>
                    <td style="padding-left: 4px;"><div><p>Copyright 2023 American Academy of Ophthalmology. All Rights Reserved.</p>
    </div></td>
                </tr>

                <tr>
                    <th scope="row"><b>Disclaimer: </b></th>
                    <td style="padding-left: 4px;"><div><p>The Measure is not a clinical guideline, does not establish a standard of medical care, and has not been tested for all potential applications.</p>
    <p>The Measure, while copyrighted, can be reproduced and distributed, without modification, for noncommercial purposes, e.g., use by health care providers in connection with their practices. Commercial use is defined as the sale, license, or distribution of the Measure for commercial gain, or incorporation of the Measure into a product or service that is sold, licensed or distributed for commercial gain.</p>
    <p>Commercial uses of the Measure require a license agreement between the user and the American Academy of Ophthalmology (Academy). Neither the Academy, its members, the American Medical Association (AMA), nor the former AMA-convened Physician Consortium for Performance Improvement(R) (AMA-PCPI), nor PCPI, nor their members shall be responsible for any use of the Measure.</p>
    <p>The PCPI’s and AMA’s significant past efforts and contributions to the development and updating of the Measures are acknowledged. The National Committee for Quality Assurance's significant past efforts and contributions to the development and updating of the Measure is acknowledged.</p>
    <p>THE MEASURE AND SPECIFICATIONS ARE PROVIDED &quot;AS IS&quot; WITHOUT WARRANTY OF ANY KIND.</p>
    <p>Limited proprietary coding is contained in the Measure specifications for convenience. A license agreement must be entered prior to a third party’s use of Current Procedural Terminology (CPT[R]) or other proprietary code set contained in the Measures. Any other use of CPT or other coding by the third party is strictly prohibited. The Academy, its members, the AMA, and former members of the PCPI disclaim all liability for use or accuracy of any CPT or other coding contained in the specifications.</p>
    <p>CPT(R) contained in the Measure specifications is copyright 2004-2022 American Medical Association. LOINC(R) is copyright 2004-2022 Regenstrief Institute, Inc. This material contains SNOMED Clinical Terms(R) (SNOMED CT[R]) copyright 2004-2022 International Health Terminology Standards Development Organisation. ICD-10 is copyright 2022 World Health Organization. All Rights Reserved.</p>
    <p>Due to technical limitations, registered trademarks are indicated by (R) or [R].</p>
    </div></td>
                </tr>

            <tr>
                <th scope="row"><b>Rationale: </b></th>
                <td style="padding-left: 4px;"><div><p>Glaucoma is a group of diseases that damage the eye’s optic nerve and can result in vision loss and blindness. In 2011, 2.71 million persons in the U.S. had primary open-angle glaucoma (POAG) and in 2050, an estimated 7.32 million persons will have POAG (Vajaranant, Wu, Torres, &amp; Varma, 2012). Furthermore, a study by Rein, Zhang, &amp; Wirth (2006) estimated that the total financial burden of major visual disorders among U.S. residents aged 40 years or older was $35.4 billion in 2004: $16.2 billion in direct medical costs, $11.1 billion in other direct costs, and $8 billion in productivity losses. Of the direct medical costs, approximately $2.9 billion was attributable to glaucoma (Rein, Zhang, &amp; Wirth, 2006). It is imperative that evidence-based care be delivered to all glaucoma patients.</p>
    <p>According to recent guidelines, optic nerve changes are one of the characteristics which reflect progression of glaucoma (the other characteristic is visual field). Examination of the optic nerve head (ONH) and retinal nerve fiber layer (RNFL) provides valuable structural information about optic nerve damage from glaucoma. Visible structural alterations of the ONH or RNFL may precede the onset of visual field defects. Careful study of the optic disc neural rim for small hemorrhages is important because these hemorrhages sometimes signal focal disc damage and visual field loss, and they may signify ongoing optic nerve damage in patients with glaucoma (Gedde et al., 2021). Despite evidence emphasizing the value of an optic nerve evaluation, there is a gap in documentation patterns of the optic nerve for both initial and follow-up care.</p>
    <p>This measure is intended to promote examination and documentation of the structure and function of the optic nerve, and to monitor and detect disease progression among patients diagnosed with POAG.</p>
    </div></td>
            </tr>

            <tr>
                <th scope="row"><b>Clinical recommendation statement: </b></th>
                <td style="padding-left: 4px;"><div><p>Ophthalmic Evaluation
    The ophthalmic evaluation specifically focuses on the following elements in the comprehensive adult medical eye evaluation:</p>
    <p>Visual acuity measurement
    Pupil examination
    Anterior segment examination
    IOP measurement
    Gonioscopy
    Optic nerve head (ONH) and retinal nerve fiber layer (RNFL) examination
    Fundus examination
    (Gedde et al., 2021)</p>
    <p>The optic nerve should be carefully examined for the signs of glaucoma damage, and its appearance should be serially documented (I+, moderate quality, strong recommendation) (Gedde et al., 2021).</p>
    </div></td>
            </tr>

                <tr>
                    <th scope="row"><b>Guidance (Usage): </b></th>
                    <td style="padding-left: 4px;">Optic nerve head evaluation includes examination of the cup to disc ratio and identification of optic disc or retinal nerve abnormalities. Both of these components of the optic nerve head evaluation are examined using ophthalmoscopy.

    The measure, as written, does not specifically require documentation of laterality. Coding limitations in particular clinical terminologies do not currently allow for that level of specificity (ICD-10-CM includes laterality, but SNOMED-CT does not uniformly include this distinction). Therefore, at this time, it is not a requirement of this measure to indicate laterality of the diagnoses, findings or procedures. Available coding to capture the data elements specified in this measure has been provided. It is assumed that the eligible professional or eligible clinician will record laterality in the patient medical record, as quality care and clinical documentation should include laterality.

    This eCQM is a patient-based measure.

    Telehealth encounters are not eligible for this measure because the measure requires a clinical action that cannot be conducted via telehealth.

    This FHIR-based measure has been derived from the QDM-based measure: CMS143v12.
    Please refer to the HL7 QI-Core Implementation Guide (http://hl7.org/fhir/us/qicore/index.html) for more information on QI-Core and mapping recommendations from QDM to QI-Core 4.1.1 (http://hl7.org/fhir/us/qicore/qdm-to-qicore.html).</td>
                </tr>

                    <tr>
                        <th scope="row"><b>Population Criteria: </b></th>
                        <td style="padding-left: 4px;">

                                <table class="grid-dict">

                                        <tr>
                                            <th><b>6467cfd1be9def4e0b01b112</b></th>
                                        </tr>

                                        <tr>
                                            <td>Initial Population:</td>

                                                <td>All patients aged 18 years and older with a diagnosis of primary open-angle glaucoma</td>

                                        </tr>

                                        <tr>
                                            <td>Denominator:</td>

                                                <td>Equals Initial Population</td>

                                        </tr>

                                        <tr>
                                            <td>Denominator Exclusion:</td>

                                                <td>None</td>

                                        </tr>

                                        <tr>
                                            <td>Numerator:</td>

                                                <td>Patients who have an optic nerve head evaluation during one or more visits within 12 months</td>

                                        </tr>

                                        <tr>
                                            <td>Numerator Exclusion:</td>

                                                <td>None</td>

                                        </tr>

                                        <tr>
                                            <td>Denominator Exception:</td>

                                                <td>Documentation of medical reason(s) for not performing an optic nerve head evaluation</td>

                                        </tr>

                                </table>

                        </td>
                    </tr>

                <tr>
                    <th scope="row">
                        <b> Supplemental Data Guidance
                            : </b></th>
                    <td style="padding-left: 4px;">  </td>
                </tr>

                <tr>
                    <th scope="row"><b> Supplemental Data Elements: </b></th>
                    <td style="padding-left: 4px;">

                                    SDE Ethnicity

                                    SDE Payer

                                    SDE Race

                                    SDE Sex

                    </td>
                </tr>

                <tr>
                    <th scope="row"><b>Libraries: </b></th>
                    <td style="padding-left: 4px;">
                        <table class="grid-dict">

                                <tr>
                                    <td><a href="Library-POAGOpticNerveEvaluationFHIR.html">POAGOpticNerveEvaluationFHIR</a></td>
                                </tr>

                        </table>
                    </td>
                </tr>

                    <tr>
                        <th scope="row"><b>Related Artifact Dependencies: </b></th>
                        <td style="padding-left: 4px;">

                                <li><a href="Library-SupplementalDataElements.html">SupplementalDataElements</a> version: 3.4.000</li>

                                <li><a href="Library-FHIRHelpers.html">FHIRHelpers</a> version: 4.3.000</li>

                                <li><a href="Library-QICoreCommon.html">QICoreCommon</a> version: 1.5.000</li>

                                <li><code>http://hl7.org/fhir/v3/AdministrativeGender</code></li>

                                <li><a href="http://terminology.hl7.org/7.1.0/CodeSystem-v3-ActCode.html">ActCode</a></li>

                                <li><a href="http://terminology.hl7.org/7.1.0/CodeSystem-condition-clinical.html">Condition Clinical Status Codes</a></li>

                                <li><a href="http://terminology.hl7.org/7.1.0/CodeSystem-condition-ver-status.html">ConditionVerificationStatus</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1333/expansion">Cup to Disc Ratio</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.464.1003.101.12.1001/expansion">Office Visit</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1285/expansion">Ophthalmological Services</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.464.1003.101.12.1008/expansion">Outpatient Consultation</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.464.1003.101.12.1012/expansion">Nursing Facility Visit</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.464.1003.101.12.1014/expansion">Care Services in Long-Term Residential Facility</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.326/expansion">Primary Open-Angle Glaucoma</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1334/expansion">Optic Disc Exam for Structural Abnormalities</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.114222.4.11.3591/expansion">Payer</a></li>

                                <li><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1007/expansion">Medical Reason</a></li>

                        </td>
                    </tr>
                    <tr>
                        <th scope="row"><b>Parameters:</b></th>
                        <td style="padding-left: 4px;">
                            <table class="grid-dict">
                                <tr>
                                    <th><b>name</b></th>
                                    <th><b>use</b></th>
                                    <th><b>min</b></th>
                                    <th><b>max</b></th>
                                    <th><b>type</b></th>
                                </tr>

                                    <tr>
                                        <td>Measurement Period</td>
                                        <td>In</td>
                                        <td>0</td>
                                        <td>1</td>
                                        <td>Period</td>
                                    </tr>

                                    <tr>
                                        <td>SDE Sex</td>
                                        <td>Out</td>
                                        <td>0</td>
                                        <td>1</td>
                                        <td>Coding</td>
                                    </tr>

                                    <tr>
                                        <td>Numerator</td>
                                        <td>Out</td>
                                        <td>0</td>
                                        <td>1</td>
                                        <td>boolean</td>
                                    </tr>

                                    <tr>
                                        <td>Denominator</td>
                                        <td>Out</td>
                                        <td>0</td>
                                        <td>1</td>
                                        <td>boolean</td>
                                    </tr>

                                    <tr>
                                        <td>SDE Payer</td>
                                        <td>Out</td>
                                        <td>0</td>
                                        <td>*</td>
                                        <td>Resource</td>
                                    </tr>

                                    <tr>
                                        <td>Initial Population</td>
                                        <td>Out</td>
                                        <td>0</td>
                                        <td>1</td>
                                        <td>boolean</td>
                                    </tr>

                                    <tr>
                                        <td>SDE Ethnicity</td>
                                        <td>Out</td>
                                        <td>0</td>
                                        <td>1</td>
                                        <td>Resource</td>
                                    </tr>

                                    <tr>
                                        <td>SDE Race</td>
                                        <td>Out</td>
                                        <td>0</td>
                                        <td>1</td>
                                        <td>Resource</td>
                                    </tr>

                                    <tr>
                                        <td>Denominator Exceptions</td>
                                        <td>Out</td>
                                        <td>0</td>
                                        <td>1</td>
                                        <td>boolean</td>
                                    </tr>

                            </table>
                        </td>
                    </tr>

                    <tr>
                        <th scope="row"><b>DataRequirements:</b></th>
                        <td style="padding-left: 4px;">
                            <table class="grid-dict">
                                <tr>
                                    <th><b>Type</b></th>
                                    <th><b>Elements</b></th>
                                    <th><b>Valueset Name</b></th>
                                    <th><b>Valueset</b></th>
                                </tr>

                                    <tr>
                                        <td>Patient(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-patient.html">QICorePatient</a>)</td>
                                        <td>

                                                ethnicity

                                                race

                                        </td>
                                        <td>

                                        </td>
                                        <td/>
                                    </tr>

                                    <tr>
                                        <td>Encounter(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-encounter.html">QICoreEncounter</a>)</td>
                                        <td>

                                                type

                                                period

                                                class

                                                status

                                                status.value

                                        </td>
                                        <td>

                                                     Office Visit

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.464.1003.101.12.1001/expansion">Office Visit</a></td>
                                    </tr>

                                    <tr>
                                        <td>Encounter(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-encounter.html">QICoreEncounter</a>)</td>
                                        <td>

                                                type

                                                period

                                                class

                                                status

                                                status.value

                                        </td>
                                        <td>

                                                     Ophthalmological Services

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1285/expansion">Ophthalmological Services</a></td>
                                    </tr>

                                    <tr>
                                        <td>Encounter(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-encounter.html">QICoreEncounter</a>)</td>
                                        <td>

                                                type

                                                period

                                                class

                                                status

                                                status.value

                                        </td>
                                        <td>

                                                     Outpatient Consultation

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.464.1003.101.12.1008/expansion">Outpatient Consultation</a></td>
                                    </tr>

                                    <tr>
                                        <td>Encounter(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-encounter.html">QICoreEncounter</a>)</td>
                                        <td>

                                                type

                                                period

                                                class

                                                status

                                                status.value

                                        </td>
                                        <td>

                                                     Nursing Facility Visit

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.464.1003.101.12.1012/expansion">Nursing Facility Visit</a></td>
                                    </tr>

                                    <tr>
                                        <td>Encounter(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-encounter.html">QICoreEncounter</a>)</td>
                                        <td>

                                                type

                                                period

                                                class

                                                status

                                                status.value

                                        </td>
                                        <td>

                                                     Care Services in Long-Term Residential Facility

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.464.1003.101.12.1014/expansion">Care Services in Long-Term Residential Facility</a></td>
                                    </tr>

                                    <tr>
                                        <td>Condition(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-condition.html">QICoreCondition</a>)</td>
                                        <td>

                                                code

                                                verificationStatus

                                        </td>
                                        <td>

                                                     Primary Open-Angle Glaucoma

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.326/expansion">Primary Open-Angle Glaucoma</a></td>
                                    </tr>

                                    <tr>
                                        <td>Observation(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-observation.html">QICoreObservation</a>)</td>
                                        <td>

                                                code

                                                effective

                                                value

                                                status

                                                status.value

                                        </td>
                                        <td>

                                                     Cup to Disc Ratio

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1333/expansion">Cup to Disc Ratio</a></td>
                                    </tr>

                                    <tr>
                                        <td>Observation(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-observation.html">QICoreObservation</a>)</td>
                                        <td>

                                                code

                                                effective

                                                value

                                                status

                                                status.value

                                        </td>
                                        <td>

                                                     Optic Disc Exam for Structural Abnormalities

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1334/expansion">Optic Disc Exam for Structural Abnormalities</a></td>
                                    </tr>

                                    <tr>
                                        <td>Coverage(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-coverage.html">QICoreCoverage</a>)</td>
                                        <td>

                                                type

                                                period

                                        </td>
                                        <td>

                                                     Payer Type

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.114222.4.11.3591/expansion">Payer</a></td>
                                    </tr>

                                    <tr>
                                        <td>Observation(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-observationnotdone.html">QICoreObservationNotDone</a>)</td>
                                        <td>

                                                code

                                                issued

                                                issued.value

                                                status

                                                status.value

                                                extension

                                        </td>
                                        <td>

                                                     Cup to Disc Ratio

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1333/expansion">Cup to Disc Ratio</a></td>
                                    </tr>

                                    <tr>
                                        <td>Observation(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-observationnotdone.html">QICoreObservationNotDone</a>)</td>
                                        <td>

                                                code

                                                issued

                                                issued.value

                                                status

                                                status.value

                                                extension

                                        </td>
                                        <td>

                                                     Cup to Disc Ratio

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1333/expansion">Cup to Disc Ratio</a></td>
                                    </tr>

                                    <tr>
                                        <td>Observation(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-observationnotdone.html">QICoreObservationNotDone</a>)</td>
                                        <td>

                                                code

                                                issued

                                                issued.value

                                                status

                                                status.value

                                                extension

                                        </td>
                                        <td>

                                                     Optic Disc Exam for Structural Abnormalities

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1334/expansion">Optic Disc Exam for Structural Abnormalities</a></td>
                                    </tr>

                                    <tr>
                                        <td>Observation(<a href="http://hl7.org/fhir/us/qicore/STU4.1.1/StructureDefinition-qicore-observationnotdone.html">QICoreObservationNotDone</a>)</td>
                                        <td>

                                                code

                                                issued

                                                issued.value

                                                status

                                                status.value

                                                extension

                                        </td>
                                        <td>

                                                     Optic Disc Exam for Structural Abnormalities

                                        </td>
                                        <td><a href="https://vsac.nlm.nih.gov/valueset/2.16.840.1.113883.3.526.3.1334/expansion">Optic Disc Exam for Structural Abnormalities</a></td>
                                    </tr>

                            </table>
                        </td>
                    </tr>

                        <tr>
                            <th scope="row"><b>Direct Reference Codes:</b></th>
                            <td style="padding-left: 4px;">
                                <table class="grid-dict">
                                    <tr>
                                        <th><b>display</b></th>
                                        <th><b>code</b></th>
                                        <th><b>system</b></th>
                                    </tr>

                                        <tr>
                                            <td>Male</td>
                                            <td>M</td>
                                            <td><a href="http://hl7.org/fhir/v3/AdministrativeGender">http://hl7.org/fhir/v3/AdministrativeGender</a></td>
                                        </tr>

                                        <tr>
                                            <td>Female</td>
                                            <td>F</td>
                                            <td><a href="http://hl7.org/fhir/v3/AdministrativeGender">http://hl7.org/fhir/v3/AdministrativeGender</a></td>
                                        </tr>

                                        <tr>
                                            <td>virtual</td>
                                            <td>VR</td>
                                            <td><a href="http://terminology.hl7.org/7.1.0/CodeSystem-v3-ActCode.html">http://terminology.hl7.org/CodeSystem/v3-ActCode</a></td>
                                        </tr>

                                        <tr>
                                            <td>Ambulatory</td>
                                            <td>AMB</td>
                                            <td><a href="http://terminology.hl7.org/7.1.0/CodeSystem-v3-ActCode.html">http://terminology.hl7.org/CodeSystem/v3-ActCode</a></td>
                                        </tr>

                                        <tr>
                                            <td/>
                                            <td>active</td>
                                            <td><a href="http://terminology.hl7.org/7.1.0/CodeSystem-condition-clinical.html">http://terminology.hl7.org/CodeSystem/condition-clinical</a></td>
                                        </tr>

                                        <tr>
                                            <td/>
                                            <td>recurrence</td>
                                            <td><a href="http://terminology.hl7.org/7.1.0/CodeSystem-condition-clinical.html">http://terminology.hl7.org/CodeSystem/condition-clinical</a></td>
                                        </tr>

                                        <tr>
                                            <td/>
                                            <td>relapse</td>
                                            <td><a href="http://terminology.hl7.org/7.1.0/CodeSystem-condition-clinical.html">http://terminology.hl7.org/CodeSystem/condition-clinical</a></td>
                                        </tr>

                                        <tr>
                                            <td/>
                                            <td>unconfirmed</td>
                                            <td><a href="http://terminology.hl7.org/7.1.0/CodeSystem-condition-ver-status.html">http://terminology.hl7.org/CodeSystem/condition-ver-status</a></td>
                                        </tr>

                                        <tr>
                                            <td/>
                                            <td>refuted</td>
                                            <td><a href="http://terminology.hl7.org/7.1.0/CodeSystem-condition-ver-status.html">http://terminology.hl7.org/CodeSystem/condition-ver-status</a></td>
                                        </tr>

                                        <tr>
                                            <td/>
                                            <td>entered-in-error</td>
                                            <td><a href="http://terminology.hl7.org/7.1.0/CodeSystem-condition-ver-status.html">http://terminology.hl7.org/CodeSystem/condition-ver-status</a></td>
                                        </tr>

                                </table>
                            </td>
                        </tr>

                    <tr>
                        <th scope="row"><b>Logic Definitions:</b></th>
                        <td style="padding-left: 4px;">

                            <table class="grid-dict">
                                <tr>
                                    <th><b>Group</b></th>
                                    <th><b>Scoring</b></th>
                                    <th><b>Population Criteria</b></th>
                                    <th><b>Expression</b></th>
                                </tr>
                                <tr>

                                    <td> 6467cfd1be9def4e0b01b112 </td>
                                    <td>

                                            <b>Group scoring:</b>

                                                <span>  proportion </span>

                                    </td>

                                    <tr>
                                        <td/>
                                        <td/>
                                        <td>Initial Population</td>
                                        <td>

                                                <pre><code class="language-cql">define &quot;Initial Population&quot;:
      AgeInYearsAt(date from start of &quot;Measurement Period&quot;) &gt;= 18
        and exists &quot;Primary Open Angle Glaucoma Encounter&quot;</code></pre>

                                        </td>
                                    </tr>

                                    <tr>
                                        <td/>
                                        <td/>
                                        <td>Denominator</td>
                                        <td>

                                                <pre><code class="language-cql">define &quot;Denominator&quot;:
      &quot;Initial Population&quot;</code></pre>

                                        </td>
                                    </tr>

                                    <tr>
                                        <td/>
                                        <td/>
                                        <td>Denominator Exclusion</td>
                                        <td>

                                                None

                                        </td>
                                    </tr>

                                    <tr>
                                        <td/>
                                        <td/>
                                        <td>Numerator</td>
                                        <td>

                                                <pre><code class="language-cql">define &quot;Numerator&quot;:
      exists &quot;Cup to Disc Ratio Performed with Result&quot;
        and exists &quot;Optic Disc Exam Performed with Result&quot;</code></pre>

                                        </td>
                                    </tr>

                                    <tr>
                                        <td/>
                                        <td/>
                                        <td>Numerator Exclusion</td>
                                        <td>

                                                None

                                        </td>
                                    </tr>

                                    <tr>
                                        <td/>
                                        <td/>
                                        <td>Denominator Exception</td>
                                        <td>

                                                <pre><code class="language-cql">define &quot;Denominator Exceptions&quot;:
      exists &quot;Medical Reason for Not Performing Cup to Disc Ratio&quot;
        or exists &quot;Medical Reason for Not Performing Optic Disc Exam&quot;</code></pre>

                                        </td>
                                    </tr>

                                </tr>
                            </table>

                    <table class="grid-dict">

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>SupplementalDataElements</td>

                                    <td>SDE Sex</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;SDE Sex&quot;:
      case
          when Patient.gender = 'male' then &quot;M&quot;
          when Patient.gender = 'female' then &quot;F&quot;
          else null
        end</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>SDE Sex</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;SDE Sex&quot;:
      SDE.&quot;SDE Sex&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Qualifying Encounter During Measurement Period</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Qualifying Encounter During Measurement Period&quot;:
      ( [&quot;Encounter&quot;: &quot;Office Visit&quot;]
        union [&quot;Encounter&quot;: &quot;Ophthalmological Services&quot;]
        union [&quot;Encounter&quot;: &quot;Outpatient Consultation&quot;]
        union [&quot;Encounter&quot;: &quot;Nursing Facility Visit&quot;]
        union [&quot;Encounter&quot;: &quot;Care Services in Long-Term Residential Facility&quot;] ) QualifyingEncounter
        where QualifyingEncounter.period during &quot;Measurement Period&quot;
          and QualifyingEncounter.class !~ &quot;virtual&quot;
          and QualifyingEncounter.class ~ &quot;AMB&quot;
          and QualifyingEncounter.status = 'finished'</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Primary Open Angle Glaucoma Encounter</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Primary Open Angle Glaucoma Encounter&quot;:
      &quot;Qualifying Encounter During Measurement Period&quot; ValidQualifyingEncounter
        with [&quot;Condition&quot;: &quot;Primary Open-Angle Glaucoma&quot;] PrimaryOpenAngleGlaucoma
          such that PrimaryOpenAngleGlaucoma.prevalenceInterval ( ) overlaps ValidQualifyingEncounter.period
            and PrimaryOpenAngleGlaucoma.isActive ( )
            and not ( PrimaryOpenAngleGlaucoma.verificationStatus ~ QICoreCommon.&quot;unconfirmed&quot;
                or PrimaryOpenAngleGlaucoma.verificationStatus ~ QICoreCommon.&quot;refuted&quot;
                or PrimaryOpenAngleGlaucoma.verificationStatus ~ QICoreCommon.&quot;entered-in-error&quot;
            )</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Cup to Disc Ratio Performed with Result</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Cup to Disc Ratio Performed with Result&quot;:
      [&quot;Observation&quot;: &quot;Cup to Disc Ratio&quot;] CupToDiscExamPerformed
        with &quot;Primary Open Angle Glaucoma Encounter&quot; EncounterWithPOAG
          such that CupToDiscExamPerformed.effective.toInterval ( ) during EncounterWithPOAG.period
        where CupToDiscExamPerformed.value is not null
          and CupToDiscExamPerformed.status in { 'final', 'amended', 'corrected' }</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Optic Disc Exam Performed with Result</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Optic Disc Exam Performed with Result&quot;:
      [&quot;Observation&quot;: &quot;Optic Disc Exam for Structural Abnormalities&quot;] OpticDiscExamPerformed
        with &quot;Primary Open Angle Glaucoma Encounter&quot; EncounterWithPOAG
          such that OpticDiscExamPerformed.effective.toInterval ( ) during EncounterWithPOAG.period
        where OpticDiscExamPerformed.value is not null
          and OpticDiscExamPerformed.status in { 'final', 'amended', 'corrected' }</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Numerator</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Numerator&quot;:
      exists &quot;Cup to Disc Ratio Performed with Result&quot;
        and exists &quot;Optic Disc Exam Performed with Result&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Initial Population</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Initial Population&quot;:
      AgeInYearsAt(date from start of &quot;Measurement Period&quot;) &gt;= 18
        and exists &quot;Primary Open Angle Glaucoma Encounter&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Denominator</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Denominator&quot;:
      &quot;Initial Population&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>SupplementalDataElements</td>

                                    <td>SDE Payer</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;SDE Payer&quot;:
      [Coverage: type in &quot;Payer Type&quot;] Payer
        return {
          code: Payer.type,
          period: Payer.period
        }</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>SDE Payer</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;SDE Payer&quot;:
      SDE.&quot;SDE Payer&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>SupplementalDataElements</td>

                                    <td>SDE Ethnicity</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;SDE Ethnicity&quot;:
      Patient.ethnicity E
        return Tuple {
          codes: { E.ombCategory } union E.detailed,
          display: E.text
        }</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>SDE Ethnicity</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;SDE Ethnicity&quot;:
      SDE.&quot;SDE Ethnicity&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>SupplementalDataElements</td>

                                    <td>SDE Race</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;SDE Race&quot;:
      Patient.race R
        return Tuple {
          codes: R.ombCategory union R.detailed,
          display: R.text
        }</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>SDE Race</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;SDE Race&quot;:
      SDE.&quot;SDE Race&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Medical Reason for Not Performing Cup to Disc Ratio</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Medical Reason for Not Performing Cup to Disc Ratio&quot;:
      [&quot;ObservationNotDone&quot;: &quot;Cup to Disc Ratio&quot;] CupToDiscExamNotPerformed
        with &quot;Primary Open Angle Glaucoma Encounter&quot; EncounterWithPOAG
          such that CupToDiscExamNotPerformed.issued.toInterval ( ) during EncounterWithPOAG.period
        where CupToDiscExamNotPerformed.status = 'cancelled'
          and CupToDiscExamNotPerformed.notDoneReason in &quot;Medical Reason&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Medical Reason for Not Performing Optic Disc Exam</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Medical Reason for Not Performing Optic Disc Exam&quot;:
      [&quot;ObservationNotDone&quot;: &quot;Optic Disc Exam for Structural Abnormalities&quot;] OpticDiscExamNotPerformed
        with &quot;Primary Open Angle Glaucoma Encounter&quot; EncounterWithPOAG
          such that OpticDiscExamNotPerformed.issued.toInterval ( ) during EncounterWithPOAG.period
        where OpticDiscExamNotPerformed.status = 'cancelled'
          and OpticDiscExamNotPerformed.notDoneReason in &quot;Medical Reason&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>POAGOpticNerveEvaluationFHIR</td>

                                    <td>Denominator Exceptions</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define &quot;Denominator Exceptions&quot;:
      exists &quot;Medical Reason for Not Performing Cup to Disc Ratio&quot;
        or exists &quot;Medical Reason for Not Performing Optic Disc Exam&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>QICoreCommon</td>

                                    <td>prevalenceInterval</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">/*
    @description: Returns an interval representing the normalized prevalence period of a given Condition.
    @comment: Uses the ToInterval and ToAbatementInterval functions to determine the widest potential interval from
    onset to abatement as specified in the given Condition. If the condition is active, the resulting interval will have
    a closed ending boundary. If the condition is not active, the resulting interval will have an open ending boundary.
    */
    define fluent function prevalenceInterval(condition Condition):
    if condition.clinicalStatus ~ &quot;active&quot;
      or condition.clinicalStatus ~ &quot;recurrence&quot;
      or condition.clinicalStatus ~ &quot;relapse&quot; then
      Interval[start of condition.onset.toInterval(), end of condition.abatementInterval()]
    else
      Interval[start of condition.onset.toInterval(), end of condition.abatementInterval())</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>QICoreCommon</td>

                                    <td>isActive</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">/* Candidates for FHIRCommon */

    /*
    @description: Returns true if the given condition has a clinical status of active, recurrence, or relapse
    */
    define fluent function isActive(condition Condition):
      condition.clinicalStatus ~ &quot;active&quot;
        or condition.clinicalStatus ~ &quot;recurrence&quot;
        or condition.clinicalStatus ~ &quot;relapse&quot;</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>QICoreCommon</td>

                                    <td>toInterval</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">/*
    @description: Normalizes a value that is a choice of timing-valued types to an equivalent interval
    @comment: Normalizes a choice type of DateTime, Quanitty, Interval&lt;DateTime&gt;, or Interval&lt;Quantity&gt; types
    to an equivalent interval. This selection of choice types is a superset of the majority of choice types that are used as possible
    representations for timing-valued elements in QICore, allowing this function to be used across any resource.
    The input can be provided as a DateTime, Quantity, Interval&lt;DateTime&gt; or Interval&lt;Quantity&gt;.
    The intent of this function is to provide a clear and concise mechanism to treat single
    elements that have multiple possible representations as intervals so that logic doesn't have to account
    for the variability. More complex calculations (such as medication request period or dispense period
    calculation) need specific guidance and consideration. That guidance may make use of this function, but
    the focus of this function is on single element calculations where the semantics are unambiguous.
    If the input is a DateTime, the result a DateTime Interval beginning and ending on that DateTime.
    If the input is a Quantity, the quantity is expected to be a calendar-duration interpreted as an Age,
    and the result is a DateTime Interval beginning on the Date the patient turned that age and ending immediately before one year later.
    If the input is a DateTime Interval, the result is the input.
    If the input is a Quantity Interval, the quantities are expected to be calendar-durations interpreted as an Age, and the result
    is a DateTime Interval beginning on the date the patient turned the age given as the start of the quantity interval, and ending
    immediately before one year later than the date the patient turned the age given as the end of the quantity interval.
    Any other input will reslt in a null DateTime Interval
    */
    define fluent function toInterval(choice Choice&lt;DateTime, Quantity, Interval&lt;DateTime&gt;, Interval&lt;Quantity&gt;&gt;):
      case
    	  when choice is DateTime then
        	Interval[choice as DateTime, choice as DateTime]
    		when choice is Interval&lt;DateTime&gt; then
      		choice as Interval&lt;DateTime&gt;
    		when choice is Quantity then
    		  Interval[Patient.birthDate + (choice as Quantity),
    			  Patient.birthDate + (choice as Quantity) + 1 year)
    		when choice is Interval&lt;Quantity&gt; then
    		  Interval[Patient.birthDate + (choice.low as Quantity),
    			  Patient.birthDate + (choice.high as Quantity) + 1 year)
    		else
    			null as Interval&lt;DateTime&gt;
    	end</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>FHIRHelpers</td>

                                    <td>ToString</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">define function ToString(value uri): value.value</code></pre>
                                    </td>

                            </tr>

                            <tr>
                                <th><b>Library Name</b></th>
                                <th><b>Name</b></th>
                            </tr>
                            <tr>

                                    <td>FHIRHelpers</td>

                                    <td>ToCode</td>

                            </tr>
                            <tr>

                                    <td/>
                                    <td>
                                        <pre class="highlight language-cql"><code class="language-cql">/*
    @description: Converts the given FHIR [Coding](https://hl7.org/fhir/datatypes.html#Coding) value to a CQL Code.
    */
    define function ToCode(coding FHIR.Coding):
        if coding is null then
            null
        else
            System.Code {
              code: coding.code.value,
              system: coding.system.value,
              version: coding.version.value,
              display: coding.display.value
            }</code></pre>
                                    </td>

                            </tr>

                        </table>
                    </td>
                </tr>

        </table>
    </div>
      </text>
      <contained>
        <Library>
          <id value="effective-data-requirements"/>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system value="http://hl7.org/fhir/v3/AdministrativeGender"/>
              <code value="M"/>
              <display value="Male"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system value="http://hl7.org/fhir/v3/AdministrativeGender"/>
              <code value="F"/>
              <display value="Female"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system value="http://terminology.hl7.org/CodeSystem/v3-ActCode"/>
              <code value="VR"/>
              <display value="virtual"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system value="http://terminology.hl7.org/CodeSystem/v3-ActCode"/>
              <code value="AMB"/>
              <display value="Ambulatory"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/condition-clinical"/>
              <code value="active"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/condition-clinical"/>
              <code value="recurrence"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/condition-clinical"/>
              <code value="relapse"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/condition-ver-status"/>
              <code value="unconfirmed"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/condition-ver-status"/>
              <code value="refuted"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-directReferenceCode">
            <valueCoding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/condition-ver-status"/>
              <code value="entered-in-error"/>
            </valueCoding>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="SupplementalDataElements"/>
            </extension>
            <extension url="name">
              <valueString value="SDE Sex"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;SDE Sex&quot;:
      case
          when Patient.gender = 'male' then &quot;M&quot;
          when Patient.gender = 'female' then &quot;F&quot;
          else null
        end"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="0"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="SDE Sex"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;SDE Sex&quot;:
      SDE.&quot;SDE Sex&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="1"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString
                           value="Qualifying Encounter During Measurement Period"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Qualifying Encounter During Measurement Period&quot;:
      ( [&quot;Encounter&quot;: &quot;Office Visit&quot;]
        union [&quot;Encounter&quot;: &quot;Ophthalmological Services&quot;]
        union [&quot;Encounter&quot;: &quot;Outpatient Consultation&quot;]
        union [&quot;Encounter&quot;: &quot;Nursing Facility Visit&quot;]
        union [&quot;Encounter&quot;: &quot;Care Services in Long-Term Residential Facility&quot;] ) QualifyingEncounter
        where QualifyingEncounter.period during &quot;Measurement Period&quot;
          and QualifyingEncounter.class !~ &quot;virtual&quot;
          and QualifyingEncounter.class ~ &quot;AMB&quot;
          and QualifyingEncounter.status = 'finished'"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="2"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="Primary Open Angle Glaucoma Encounter"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Primary Open Angle Glaucoma Encounter&quot;:
      &quot;Qualifying Encounter During Measurement Period&quot; ValidQualifyingEncounter
        with [&quot;Condition&quot;: &quot;Primary Open-Angle Glaucoma&quot;] PrimaryOpenAngleGlaucoma
          such that PrimaryOpenAngleGlaucoma.prevalenceInterval ( ) overlaps ValidQualifyingEncounter.period
            and PrimaryOpenAngleGlaucoma.isActive ( )
            and not ( PrimaryOpenAngleGlaucoma.verificationStatus ~ QICoreCommon.&quot;unconfirmed&quot;
                or PrimaryOpenAngleGlaucoma.verificationStatus ~ QICoreCommon.&quot;refuted&quot;
                or PrimaryOpenAngleGlaucoma.verificationStatus ~ QICoreCommon.&quot;entered-in-error&quot;
            )"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="3"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="Cup to Disc Ratio Performed with Result"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Cup to Disc Ratio Performed with Result&quot;:
      [&quot;Observation&quot;: &quot;Cup to Disc Ratio&quot;] CupToDiscExamPerformed
        with &quot;Primary Open Angle Glaucoma Encounter&quot; EncounterWithPOAG
          such that CupToDiscExamPerformed.effective.toInterval ( ) during EncounterWithPOAG.period
        where CupToDiscExamPerformed.value is not null
          and CupToDiscExamPerformed.status in { 'final', 'amended', 'corrected' }"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="4"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="Optic Disc Exam Performed with Result"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Optic Disc Exam Performed with Result&quot;:
      [&quot;Observation&quot;: &quot;Optic Disc Exam for Structural Abnormalities&quot;] OpticDiscExamPerformed
        with &quot;Primary Open Angle Glaucoma Encounter&quot; EncounterWithPOAG
          such that OpticDiscExamPerformed.effective.toInterval ( ) during EncounterWithPOAG.period
        where OpticDiscExamPerformed.value is not null
          and OpticDiscExamPerformed.status in { 'final', 'amended', 'corrected' }"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="5"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="Numerator"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Numerator&quot;:
      exists &quot;Cup to Disc Ratio Performed with Result&quot;
        and exists &quot;Optic Disc Exam Performed with Result&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="6"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="Initial Population"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Initial Population&quot;:
      AgeInYearsAt(date from start of &quot;Measurement Period&quot;) &gt;= 18
        and exists &quot;Primary Open Angle Glaucoma Encounter&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="7"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="Denominator"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Denominator&quot;:
      &quot;Initial Population&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="8"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="SupplementalDataElements"/>
            </extension>
            <extension url="name">
              <valueString value="SDE Payer"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;SDE Payer&quot;:
      [Coverage: type in &quot;Payer Type&quot;] Payer
        return {
          code: Payer.type,
          period: Payer.period
        }"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="9"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="SDE Payer"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;SDE Payer&quot;:
      SDE.&quot;SDE Payer&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="10"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="SupplementalDataElements"/>
            </extension>
            <extension url="name">
              <valueString value="SDE Ethnicity"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;SDE Ethnicity&quot;:
      Patient.ethnicity E
        return Tuple {
          codes: { E.ombCategory } union E.detailed,
          display: E.text
        }"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="11"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="SDE Ethnicity"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;SDE Ethnicity&quot;:
      SDE.&quot;SDE Ethnicity&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="12"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="SupplementalDataElements"/>
            </extension>
            <extension url="name">
              <valueString value="SDE Race"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;SDE Race&quot;:
      Patient.race R
        return Tuple {
          codes: R.ombCategory union R.detailed,
          display: R.text
        }"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="13"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="SDE Race"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;SDE Race&quot;:
      SDE.&quot;SDE Race&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="14"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString
                           value="Medical Reason for Not Performing Cup to Disc Ratio"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Medical Reason for Not Performing Cup to Disc Ratio&quot;:
      [&quot;ObservationNotDone&quot;: &quot;Cup to Disc Ratio&quot;] CupToDiscExamNotPerformed
        with &quot;Primary Open Angle Glaucoma Encounter&quot; EncounterWithPOAG
          such that CupToDiscExamNotPerformed.issued.toInterval ( ) during EncounterWithPOAG.period
        where CupToDiscExamNotPerformed.status = 'cancelled'
          and CupToDiscExamNotPerformed.notDoneReason in &quot;Medical Reason&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="15"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString
                           value="Medical Reason for Not Performing Optic Disc Exam"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Medical Reason for Not Performing Optic Disc Exam&quot;:
      [&quot;ObservationNotDone&quot;: &quot;Optic Disc Exam for Structural Abnormalities&quot;] OpticDiscExamNotPerformed
        with &quot;Primary Open Angle Glaucoma Encounter&quot; EncounterWithPOAG
          such that OpticDiscExamNotPerformed.issued.toInterval ( ) during EncounterWithPOAG.period
        where OpticDiscExamNotPerformed.status = 'cancelled'
          and OpticDiscExamNotPerformed.notDoneReason in &quot;Medical Reason&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="16"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="POAGOpticNerveEvaluationFHIR"/>
            </extension>
            <extension url="name">
              <valueString value="Denominator Exceptions"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define &quot;Denominator Exceptions&quot;:
      exists &quot;Medical Reason for Not Performing Cup to Disc Ratio&quot;
        or exists &quot;Medical Reason for Not Performing Optic Disc Exam&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="17"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="QICoreCommon"/>
            </extension>
            <extension url="name">
              <valueString value="prevalenceInterval"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="/*
    @description: Returns an interval representing the normalized prevalence period of a given Condition.
    @comment: Uses the ToInterval and ToAbatementInterval functions to determine the widest potential interval from
    onset to abatement as specified in the given Condition. If the condition is active, the resulting interval will have
    a closed ending boundary. If the condition is not active, the resulting interval will have an open ending boundary.
    */
    define fluent function prevalenceInterval(condition Condition):
    if condition.clinicalStatus ~ &quot;active&quot;
      or condition.clinicalStatus ~ &quot;recurrence&quot;
      or condition.clinicalStatus ~ &quot;relapse&quot; then
      Interval[start of condition.onset.toInterval(), end of condition.abatementInterval()]
    else
      Interval[start of condition.onset.toInterval(), end of condition.abatementInterval())"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="18"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="QICoreCommon"/>
            </extension>
            <extension url="name">
              <valueString value="isActive"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="/* Candidates for FHIRCommon */

    /*
    @description: Returns true if the given condition has a clinical status of active, recurrence, or relapse
    */
    define fluent function isActive(condition Condition):
      condition.clinicalStatus ~ &quot;active&quot;
        or condition.clinicalStatus ~ &quot;recurrence&quot;
        or condition.clinicalStatus ~ &quot;relapse&quot;"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="19"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="QICoreCommon"/>
            </extension>
            <extension url="name">
              <valueString value="toInterval"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="/*
    @description: Normalizes a value that is a choice of timing-valued types to an equivalent interval
    @comment: Normalizes a choice type of DateTime, Quanitty, Interval&lt;DateTime&gt;, or Interval&lt;Quantity&gt; types
    to an equivalent interval. This selection of choice types is a superset of the majority of choice types that are used as possible
    representations for timing-valued elements in QICore, allowing this function to be used across any resource.
    The input can be provided as a DateTime, Quantity, Interval&lt;DateTime&gt; or Interval&lt;Quantity&gt;.
    The intent of this function is to provide a clear and concise mechanism to treat single
    elements that have multiple possible representations as intervals so that logic doesn't have to account
    for the variability. More complex calculations (such as medication request period or dispense period
    calculation) need specific guidance and consideration. That guidance may make use of this function, but
    the focus of this function is on single element calculations where the semantics are unambiguous.
    If the input is a DateTime, the result a DateTime Interval beginning and ending on that DateTime.
    If the input is a Quantity, the quantity is expected to be a calendar-duration interpreted as an Age,
    and the result is a DateTime Interval beginning on the Date the patient turned that age and ending immediately before one year later.
    If the input is a DateTime Interval, the result is the input.
    If the input is a Quantity Interval, the quantities are expected to be calendar-durations interpreted as an Age, and the result
    is a DateTime Interval beginning on the date the patient turned the age given as the start of the quantity interval, and ending
    immediately before one year later than the date the patient turned the age given as the end of the quantity interval.
    Any other input will reslt in a null DateTime Interval
    */
    define fluent function toInterval(choice Choice&lt;DateTime, Quantity, Interval&lt;DateTime&gt;, Interval&lt;Quantity&gt;&gt;):
      case
    	  when choice is DateTime then
        	Interval[choice as DateTime, choice as DateTime]
    		when choice is Interval&lt;DateTime&gt; then
      		choice as Interval&lt;DateTime&gt;
    		when choice is Quantity then
    		  Interval[Patient.birthDate + (choice as Quantity),
    			  Patient.birthDate + (choice as Quantity) + 1 year)
    		when choice is Interval&lt;Quantity&gt; then
    		  Interval[Patient.birthDate + (choice.low as Quantity),
    			  Patient.birthDate + (choice.high as Quantity) + 1 year)
    		else
    			null as Interval&lt;DateTime&gt;
    	end"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="20"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="FHIRHelpers"/>
            </extension>
            <extension url="name">
              <valueString value="ToString"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="define function ToString(value uri): value.value"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="21"/>
            </extension>
          </extension>
          <extension
                     url="http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-logicDefinition">
            <extension url="libraryName">
              <valueString value="FHIRHelpers"/>
            </extension>
            <extension url="name">
              <valueString value="ToCode"/>
            </extension>
            <extension url="statement">
              <valueString
                           value="/*
    @description: Converts the given FHIR [Coding](https://hl7.org/fhir/datatypes.html#Coding) value to a CQL Code.
    */
    define function ToCode(coding FHIR.Coding):
        if coding is null then
            null
        else
            System.Code {
              code: coding.code.value,
              system: coding.system.value,
              version: coding.version.value,
              display: coding.display.value
            }"/>
            </extension>
            <extension url="displaySequence">
              <valueInteger value="22"/>
            </extension>
          </extension>
          <status value="active"/>
          <type>
            <coding>
              <system value="http://terminology.hl7.org/CodeSystem/library-type"/>
              <code value="module-definition"/>
            </coding>
          </type>
          <relatedArtifact>
            <type value="depends-on"/>
            <display value="Library SDE"/>
            <resource
                      value="http://ecqi.healthit.gov/ecqms/Library/SupplementalDataElements|3.4.000"/>
          </relatedArtifact>
          <relatedArtifact>
            <type value="depends-on"/>
            <display value="Library FHIRHelpers"/>
            <resource
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      <name value="POAGOpticNerveEvaluationFHIR"/>
      <title
             value="Primary Open-Angle Glaucoma (POAG): Optic Nerve EvaluationFHIR"/>
      <status value="draft"/>
      <experimental value="false"/>
      <date value="2023-10-27T08:12:32+00:00"/>
      <publisher value="American Academy of Ophthalmology"/>
      <contact>
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      </contact>
      <description
                   value="Percentage of patients aged 18 years and older with a diagnosis of primary open-angle glaucoma (POAG) who have an optic nerve head evaluation during one or more visits within 12 months"/>
      <purpose value="UNKNOWN"/>
      <usage
             value="Optic nerve head evaluation includes examination of the cup to disc ratio and identification of optic disc or retinal nerve abnormalities. Both of these components of the optic nerve head evaluation are examined using ophthalmoscopy.

    The measure, as written, does not specifically require documentation of laterality. Coding limitations in particular clinical terminologies do not currently allow for that level of specificity (ICD-10-CM includes laterality, but SNOMED-CT does not uniformly include this distinction). Therefore, at this time, it is not a requirement of this measure to indicate laterality of the diagnoses, findings or procedures. Available coding to capture the data elements specified in this measure has been provided. It is assumed that the eligible professional or eligible clinician will record laterality in the patient medical record, as quality care and clinical documentation should include laterality.

    This eCQM is a patient-based measure.

    Telehealth encounters are not eligible for this measure because the measure requires a clinical action that cannot be conducted via telehealth.

    This FHIR-based measure has been derived from the QDM-based measure: CMS143v12.
    Please refer to the HL7 QI-Core Implementation Guide (http://hl7.org/fhir/us/qicore/index.html) for more information on QI-Core and mapping recommendations from QDM to QI-Core 4.1.1 (http://hl7.org/fhir/us/qicore/qdm-to-qicore.html)."/>
      <copyright
                 value="Copyright 2023 American Academy of Ophthalmology. All Rights Reserved."/>
      <approvalDate value="2023-08-14"/>
      <lastReviewDate value="2023-08-14"/>
      <effectivePeriod>
        <start value="2024-01-01"/>
        <end value="2024-12-31"/>
      </effectivePeriod>
      <author>
        <name value="American Academy of Ophthalmology"/>
        <telecom>
          <system value="url"/>
          <value value="www.aao.org"/>
        </telecom>
      </author>
      <author>
        <name value="American Medical Association (AMA)"/>
        <telecom>
          <system value="url"/>
          <value value="https://www.ama-assn.org/"/>
        </telecom>
      </author>
      <library
               value="http://ecqi.healthit.gov/ecqms/Library/POAGOpticNerveEvaluationFHIR"/>
      <disclaimer
                  value="The Measure is not a clinical guideline, does not establish a standard of medical care, and has not been tested for all potential applications.

    The Measure, while copyrighted, can be reproduced and distributed, without modification, for noncommercial purposes, e.g., use by health care providers in connection with their practices. Commercial use is defined as the sale, license, or distribution of the Measure for commercial gain, or incorporation of the Measure into a product or service that is sold, licensed or distributed for commercial gain.

    Commercial uses of the Measure require a license agreement between the user and the American Academy of Ophthalmology (Academy). Neither the Academy, its members, the American Medical Association (AMA), nor the former AMA-convened Physician Consortium for Performance Improvement(R) (AMA-PCPI), nor PCPI, nor their members shall be responsible for any use of the Measure.

    The PCPI’s and AMA’s significant past efforts and contributions to the development and updating of the Measures are acknowledged. The National Committee for Quality Assurance's significant past efforts and contributions to the development and updating of the Measure is acknowledged.

    THE MEASURE AND SPECIFICATIONS ARE PROVIDED &quot;AS IS&quot; WITHOUT WARRANTY OF ANY KIND.

    Limited proprietary coding is contained in the Measure specifications for convenience. A license agreement must be entered prior to a third party’s use of Current Procedural Terminology (CPT[R]) or other proprietary code set contained in the Measures. Any other use of CPT or other coding by the third party is strictly prohibited. The Academy, its members, the AMA, and former members of the PCPI disclaim all liability for use or accuracy of any CPT or other coding contained in the specifications.

    CPT(R) contained in the Measure specifications is copyright 2004-2022 American Medical Association. LOINC(R) is copyright 2004-2022 Regenstrief Institute, Inc. This material contains SNOMED Clinical Terms(R) (SNOMED CT[R]) copyright 2004-2022 International Health Terminology Standards Development Organisation. ICD-10 is copyright 2022 World Health Organization. All Rights Reserved.

    Due to technical limitations, registered trademarks are indicated by (R) or [R]."/>
      <rationale
                 value="Glaucoma is a group of diseases that damage the eye’s optic nerve and can result in vision loss and blindness. In 2011, 2.71 million persons in the U.S. had primary open-angle glaucoma (POAG) and in 2050, an estimated 7.32 million persons will have POAG (Vajaranant, Wu, Torres, &amp; Varma, 2012). Furthermore, a study by Rein, Zhang, &amp; Wirth (2006) estimated that the total financial burden of major visual disorders among U.S. residents aged 40 years or older was $35.4 billion in 2004: $16.2 billion in direct medical costs, $11.1 billion in other direct costs, and $8 billion in productivity losses. Of the direct medical costs, approximately $2.9 billion was attributable to glaucoma (Rein, Zhang, &amp; Wirth, 2006). It is imperative that evidence-based care be delivered to all glaucoma patients.

    According to recent guidelines, optic nerve changes are one of the characteristics which reflect progression of glaucoma (the other characteristic is visual field). Examination of the optic nerve head (ONH) and retinal nerve fiber layer (RNFL) provides valuable structural information about optic nerve damage from glaucoma. Visible structural alterations of the ONH or RNFL may precede the onset of visual field defects. Careful study of the optic disc neural rim for small hemorrhages is important because these hemorrhages sometimes signal focal disc damage and visual field loss, and they may signify ongoing optic nerve damage in patients with glaucoma (Gedde et al., 2021). Despite evidence emphasizing the value of an optic nerve evaluation, there is a gap in documentation patterns of the optic nerve for both initial and follow-up care.

    This measure is intended to promote examination and documentation of the structure and function of the optic nerve, and to monitor and detect disease progression among patients diagnosed with POAG."/>
      <clinicalRecommendationStatement
                                       value="Ophthalmic Evaluation
    The ophthalmic evaluation specifically focuses on the following elements in the comprehensive adult medical eye evaluation:

    Visual acuity measurement
    Pupil examination
    Anterior segment examination
    IOP measurement
    Gonioscopy
    Optic nerve head (ONH) and retinal nerve fiber layer (RNFL) examination
    Fundus examination
    (Gedde et al., 2021)

    The optic nerve should be carefully examined for the signs of glaucoma damage, and its appearance should be serially documented (I+, moderate quality, strong recommendation) (Gedde et al., 2021)."/>
      <group id="6467cfd1be9def4e0b01b112">
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              <code value="proportion"/>
              <display value="Proportion"/>
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          <description
                       value="All patients aged 18 years and older with a diagnosis of primary open-angle glaucoma"/>
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          </criteria>
        </population>
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        </population>
        <population id="CA57AFF6-2A99-4D62-A2C1-1DAB994EE665">
          <code>
            <coding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/measure-population"/>
              <code value="numerator"/>
              <display value="Numerator"/>
            </coding>
          </code>
          <description
                       value="Patients who have an optic nerve head evaluation during one or more visits within 12 months"/>
          <criteria>
            <language value="text/cql-identifier"/>
            <expression value="Numerator"/>
          </criteria>
        </population>
        <population id="52c744ad-93a8-4d53-a086-51ad88b41602">
          <code>
            <coding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/measure-population"/>
              <code value="numerator-exclusion"/>
              <display value="Numerator Exclusion"/>
            </coding>
          </code>
          <criteria>
            <language value="text/cql-identifier"/>
          </criteria>
        </population>
        <population id="41D39B61-9AF0-4A23-91A9-385AAFB45D32">
          <code>
            <coding>
              <system
                      value="http://terminology.hl7.org/CodeSystem/measure-population"/>
              <code value="denominator-exception"/>
              <display value="Denominator Exception"/>
            </coding>
          </code>
          <description
                       value="Documentation of medical reason(s) for not performing an optic nerve head evaluation"/>
          <criteria>
            <language value="text/cql-identifier"/>
            <expression value="Denominator Exceptions"/>
          </criteria>
        </population>
      </group>
      <supplementalData id="sde-ethnicity">
        <usage>
          <coding>
            <system
                    value="http://terminology.hl7.org/CodeSystem/measure-data-usage"/>
            <code value="supplemental-data"/>
          </coding>
        </usage>
        <description value="SDE Ethnicity"/>
        <criteria>
          <language value="text/cql-identifier"/>
          <expression value="SDE Ethnicity"/>
        </criteria>
      </supplementalData>
      <supplementalData id="sde-payer">
        <usage>
          <coding>
            <system
                    value="http://terminology.hl7.org/CodeSystem/measure-data-usage"/>
            <code value="supplemental-data"/>
          </coding>
        </usage>
        <description value="SDE Payer"/>
        <criteria>
          <language value="text/cql-identifier"/>
          <expression value="SDE Payer"/>
        </criteria>
      </supplementalData>
      <supplementalData id="sde-race">
        <usage>
          <coding>
            <system
                    value="http://terminology.hl7.org/CodeSystem/measure-data-usage"/>
            <code value="supplemental-data"/>
          </coding>
        </usage>
        <description value="SDE Race"/>
        <criteria>
          <language value="text/cql-identifier"/>
          <expression value="SDE Race"/>
        </criteria>
      </supplementalData>
      <supplementalData id="sde-sex">
        <usage>
          <coding>
            <system
                    value="http://terminology.hl7.org/CodeSystem/measure-data-usage"/>
            <code value="supplemental-data"/>
          </coding>
        </usage>
        <description value="SDE Sex"/>
        <criteria>
          <language value="text/cql-identifier"/>
          <expression value="SDE Sex"/>
        </criteria>
      </supplementalData>
    </Measure>