```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns4:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/">
    <query_name>Essen-Diabe-Perso@19:50:47</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>3</hlevel>
            <item_name>Essential (primary) hypertension</item_name>
            <item_key>\\ICD10_ICD9\Diagnoses\(I00-I99) Dise~3w8h\(I10-I15) Hype~5igm\(I10) Essentia~sbwm\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Diseases of the circulatory system (i00-i99) \ Hypertensive diseases (i10-i15) \ Essential (primary) hypertension</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
    <panel>
        <panel_number>2</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>2</hlevel>
            <item_name>Diabetes mellitus (e08-e13)</item_name>
            <item_key>\\ICD10_ICD9\Diagnoses\(E00-E89) Endo~c157\(E08-E13) Diab~1uxc\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Endocrine, nutritional and metabolic diseases (e00-e89) \ Diabetes mellitus (e08-e13)</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
    <panel>
        <panel_number>3</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>0</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>2</total_item_occurrences>
        <item>
            <hlevel>0</hlevel>
            <item_name>(PrevQuery)Person_#1000000045</item_name>
            <item_key>masterid:3740</item_key>
            <tooltip>Person_#1000000045</tooltip>
            <item_is_synonym>false</item_is_synonym>
        </item>
        <item>
            <hlevel>3</hlevel>
            <item_name>Outpatient visit</item_name>
            <item_key>\\i2b2_VISIT\i2b2\Visit Details\Visit type\Outpatient visit\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Visit Details \ Visit type \ Outpatient visit</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find patients with a diagnosis of essential (primary) hypertension (ICD10-ICD9 codes I10-I15) and diabetes mellitus (ICD10-ICD9 codes E08-E13) who have had an outpatient visit, and are associated with person ID 100000045. The specificity scale is set to 0, indicating that all patients meeting these criteria should be included, and the accuracy scale for each panel is set to 100, meaning that the diagnosis codes should be exact matches. The query timing is set to ANY, so it includes encounters from any time period.