```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>Hyperlipidemia@19:53:46</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>Hyperlipidemia</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Metabolic and immunity disorders (270-279)\(272) Disorders of lipoid metabol~\(272-4) Other and unspecified hyp~\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Diagnoses \ Metabolic and immunity disorders \ Disorders of lipoid metabolism \ Other and unspecified hyperlipidemia</tooltip>
            <class>ENC</class>
            <item_is_synonym>true</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find all instances of diagnoses related to metabolic and immunity disorders, specifically focusing on disorders of lipid metabolism, and more specifically on other and unspecified hyperlipidemia within the i2b2 data repository. The query will have a high accuracy scale and no specific timing constraints, and the panel will include a single item with a total of one occurrence.