```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>Admit Diagnosis@18:43:44</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>Encounter for screening for infectious and parasitic diseases</item_name>
            <item_key>\\ICD10_ICD9\Diagnoses\(Z00-Z99) Fact~rmj9\(Z00-Z13) Pers~m0l3\(Z11) Encounte~xfu3\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Factors influencing health status and contact with health services (z00-z99) \ Persons encountering health services for examinations (z00-z13)
 \ Encounter for screening for infectious and parasitic diseases</tooltip>
            <class>ENC</class>
            <constrain_by_modifier>
                <modifier_name>Admit Diagnosis</modifier_name>
                <modifier_key>\\ICD10_ICD9\Admit Diagnosis\</modifier_key>
                <applied_path>\Diagnoses\(Z00-Z99) Fact~rmj9\%</applied_path>
            </constrain_by_modifier>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find patients who have been admitted to the hospital with a primary diagnosis of "Encounter for screening for infectious and parasitic diseases" (ICD-10 code Z13) at any time, with a specificity scale of 0, accuracy scale of 100, and a single item occurrence. This query is constrained by the "Admit Diagnosis" modifier, which means that only the primary diagnosis at admission will be considered for this query.