```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>Assault by blun@17:22:04</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>Assault by blunt object</item_name>
            <item_key>\\ICD10_ICD9\Diagnoses\(V00-Y99) Exte~2k58\(X92-Y08) Assa~4b66\(Y00) Assault~ymnk\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ External causes of morbidity (v00-y99) \ Assault (x92-y08) \ Assault by blunt object</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find patients who have been diagnosed with assault by a blunt object based on ICD-9 or ICD-10 codes in the external causes of morbidity category. The query should have a specificity scale of 0, and the panel timing and accuracy scale should be set to ANY and 100 respectively. The panel should include only one item with the item name 'Assault by blunt object' and the item key '(V0-Y9) Exte~2k58(X92-Y08) Assa~4b6(Y00) Assault~ymnk'. The class should be set to ENC and the item should not be considered as a synonym.