I'm encountering a number of systems that at the very least seem candidates for the external code system list, but in a number of cases they look plain wrong. These should be investigated:

<x>
<ValueSet identifier="http://hl7.org/fhir/vs/anzsco-occupations">
<f:system xmlns:f="http://hl7.org/fhir" value="http://www.abs.gov.au/ausstats/abs@.nsf/mf/1220.0"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/cond-uslab-reasonforstudy">
<f:system xmlns:f="http://hl7.org/fhir" value="http://www.cms.gov/Medicare/Coding/ICD10/index.html"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/cond-uslab-reasonforstudy">
<f:system xmlns:f="http://hl7.org/fhir" value="http://www.cms.gov/Medicare/Coding/ICD9ProviderDiagnosticCodes/codes.html"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/daf-encounter-reason">
<f:system xmlns:f="http://hl7.org/fhir" value="http://www.dont.use/cpt4"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/daf-encounter-type">
<f:system xmlns:f="http://hl7.org/fhir" value="http://www.dont.use/cpt4"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/uslab-country-codes">
<f:system xmlns:f="http://hl7.org/fhir" value="http://www.iso.org/iso/country_codes.htm"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/list-listpurposecodes">
<f:system xmlns:f="http://hl7.org/fhir" value="http://www.who.int/classifications/icf/en/"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/fips-county">
<f:system xmlns:f="http://hl7.org/fhir" value="https://www.census.gov/geo/reference/"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/usps-state">
<f:system xmlns:f="http://hl7.org/fhir" value="https://www.usps.com/"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/valueset-systems">
<f:system xmlns:f="http://hl7.org/fhir" value="urn:ietf:rfc:3986"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/list-item-flag">
<f:system xmlns:f="http://hl7.org/fhir" value="urn:oid:1.2.36.1.2001.1001.101.104.16592"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/template-status-code">
<f:system xmlns:f="http://hl7.org/fhir" value="urn:oid:2.16.840.1.113883.3.1937.98.5.8"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/xds-practice-codes">
<f:system xmlns:f="http://hl7.org/fhir" value="urn:uuid:cccf5598-8b07-4b77-a05e-ae952c785ead"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/xds-typecodes">
<f:system xmlns:f="http://hl7.org/fhir" value="urn:uuid:f0306f51-975f-434e-a61c-c59651d33983"/>
</ValueSet>
<ValueSet identifier="http://hl7.org/fhir/vs/xds-facilitycodes">
<f:system xmlns:f="http://hl7.org/fhir" value="urn:uuid:f33fb8ac-18af-42cc-ae0e-ed0b0bdb91e1"/>
</ValueSet>
</x>