haau3 FHIR Implementation Guide (HFIG) - Local Development build (v1.0.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

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: Counties of a state - XML Representation

Active as of 2026-10-14

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<OperationDefinition xmlns="http://hl7.org/fhir">
  <id value="InsurancePlan-counties"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: OperationDefinition InsurancePlan-counties</b></p><a name="InsurancePlan-counties"> </a><a name="hcInsurancePlan-counties"> </a><p>URL: [base]/InsurancePlan/$counties</p><h3>Parameters</h3><table class="grid"><tr><td><b>Use</b></td><td><b>Name</b></td><td><b>Scope</b></td><td><b>Cardinality</b></td><td><b>Type</b></td><td><b>Binding</b></td><td><b>Documentation</b></td></tr><tr><td>IN</td><td>state</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td/><td><div><p>The two-letter USPS code of a state, the District of Columbia or a territory, in either case: FL.</p>
</div></td></tr><tr><td>OUT</td><td>county</td><td/><td>0..*</td><td/><td/><td><div><p>One county, by name order.</p>
</div></td></tr><tr><td>OUT</td><td>county.code</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R4/datatypes.html#Coding">Coding</a></td><td/><td><div><p>The county's five-digit FIPS state and county code in the system http://terminology.hl7.org/CodeSystem/FIPS64, with the county's name as the Census Bureau writes it (Miami-Dade County) as its display.</p>
</div></td></tr><tr><td>OUT</td><td>county.state</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td/><td><div><p>The two-letter USPS code of the county's state, district or territory.</p>
</div></td></tr><tr><td>OUT</td><td>source</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R4/datatypes.html#string">string</a></td><td/><td><div><p>Where the list comes from: the Census Bureau's 2020 county codes and the address it is published at.</p>
</div></td></tr></table><div><p>GET [base]/InsurancePlan/$counties?state=FL. A state code that is not two letters is refused with 400; one that names no state, district or territory answers 404. The response is a Parameters resource: one county parameter per county, then the source.</p>
</div></div>
  </text>
  <url
       value="https://haau3.com/fhir/OperationDefinition/InsurancePlan-counties"/>
  <version value="1.0.0"/>
  <name value="InsurancePlanCounties"/>
  <title value="Counties of a state"/>
  <status value="active"/>
  <kind value="operation"/>
  <date value="2026-10-14"/>
  <publisher value="haau3"/>
  <contact>
    <name value="haau3"/>
    <telecom>
      <system value="url"/>
      <value value="https://haau3.com"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="hello@haau3.com"/>
    </telecom>
  </contact>
  <description
               value="Lists the counties and county equivalents of a US state, the District of Columbia or a territory, sorted by name, each with its five-digit FIPS state and county code: the code the [coverage-area-county](SearchParameter-InsurancePlan-coverage-area-county.html) search takes. The list is the U.S. Census Bureau's 2020 FIPS codes for counties and county equivalents. It answers whether or not a plan is sold in a county."/>
  <jurisdiction>
    <coding>
      <system value="urn:iso:std:iso:3166"/>
      <code value="US"/>
      <display value="United States of America"/>
    </coding>
  </jurisdiction>
  <affectsState value="false"/>
  <code value="counties"/>
  <comment
           value="GET [base]/InsurancePlan/$counties?state=FL. A state code that is not two letters is refused with 400; one that names no state, district or territory answers 404. The response is a Parameters resource: one county parameter per county, then the source."/>
  <resource value="InsurancePlan"/>
  <system value="false"/>
  <type value="true"/>
  <instance value="false"/>
  <parameter>
    <name value="state"/>
    <use value="in"/>
    <min value="1"/>
    <max value="1"/>
    <documentation
                   value="The two-letter USPS code of a state, the District of Columbia or a territory, in either case: FL."/>
    <type value="string"/>
  </parameter>
  <parameter>
    <name value="county"/>
    <use value="out"/>
    <min value="0"/>
    <max value="*"/>
    <documentation value="One county, by name order."/>
    <part>
      <name value="code"/>
      <use value="out"/>
      <min value="1"/>
      <max value="1"/>
      <documentation
                     value="The county's five-digit FIPS state and county code in the system http://terminology.hl7.org/CodeSystem/FIPS64, with the county's name as the Census Bureau writes it (Miami-Dade County) as its display."/>
      <type value="Coding"/>
    </part>
    <part>
      <name value="state"/>
      <use value="out"/>
      <min value="1"/>
      <max value="1"/>
      <documentation
                     value="The two-letter USPS code of the county's state, district or territory."/>
      <type value="string"/>
    </part>
  </parameter>
  <parameter>
    <name value="source"/>
    <use value="out"/>
    <min value="1"/>
    <max value="1"/>
    <documentation
                   value="Where the list comes from: the Census Bureau's 2020 county codes and the address it is published at."/>
    <type value="string"/>
  </parameter>
</OperationDefinition>