```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns3:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/">
    <query_name>Admit Diagnosis@19:00:55</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>4</hlevel>
            <item_name>Achalasia and cardiospasm</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Digestive system (520-579)\(530) Diseases of esophagus\(530-0) Achalasia and cardiospasm\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Digestive system \ Diseases of esophagus \ Achalasia and cardiospasm</tooltip>
            <class>ENC</class>
            <constrain_by_modifier>
                <modifier_name>Admit Diagnosis</modifier_name>
                <modifier_key>\\i2b2_DIAG\Admit Diagnosis\</modifier_key>
                <applied_path>\i2b2\Diagnoses\Digestive system (520-579)\%</applied_path>
            </constrain_by_modifier>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns3:query_definition>

```

I want to find all patients who have been admitted with a diagnosis of Achalasia and cardiospasm, a condition affecting the esophagus, as their primary diagnosis. This query is looking for cases where this specific diagnosis is recorded at the time of admission, and the search will return results with 1000% accuracy. The query is designed to search within the "Diagnoses" category, specifically within the "Digestive System" section, and more specifically under the "Diseases of Esophagus" subcategory. The condition code for Achalasia and cardiospasm is 530-0, and the query will be applied to the "Admit Diagnosis" modifier.