<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="gap-related-person-profile" />
  <url value="http://akinox.com/fhir/StructureDefinition/gap-related-person-profile" />
  <version value="1.0.0" />
  <name value="GapRelatedPerson" />
  <title value="GAP Related Person Profile" />
  <status value="draft" />
  <description value="A FHIR RelatedPerson profile for GAP requests. Communication (preferred language) is optional as not all source systems can provide this information." />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="RelatedPerson" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/RelatedPerson" />
  <derivation value="constraint" />
  <differential>
    <element id="RelatedPerson">
      <path value="RelatedPerson" />
      <constraint>
        <key value="gap-related-person-at-least-one-telecom" />
        <severity value="error" />
        <human value="At least one of phone or email must be present." />
        <expression value="telecom.where(system='phone').exists() or telecom.where(system='email').exists()" />
        <source value="http://akinox.com/fhir/StructureDefinition/gap-related-person-profile" />
      </constraint>
      <constraint>
        <key value="gap-related-person-no-sms-telecom" />
        <severity value="error" />
        <human value="SMS is not a permitted telecom system. Only phone and email are allowed." />
        <expression value="telecom.where(system='sms').empty()" />
        <source value="http://akinox.com/fhir/StructureDefinition/gap-related-person-profile" />
      </constraint>
      <constraint>
        <key value="gap-related-person-phone-number-format" />
        <severity value="error" />
        <human value="Phone number must contain exactly 10 digits." />
        <expression value="telecom.where(system='phone').all(value.matches('^[0-9]{10}$'))" />
        <source value="http://akinox.com/fhir/StructureDefinition/gap-related-person-profile" />
      </constraint>
      <constraint>
        <key value="gap-related-person-email-format" />
        <severity value="error" />
        <human value="Email must follow a strict valid email format without consecutive dots, leading/trailing hyphens in domain parts, or other invalid patterns." />
        <expression value="telecom.where(system='email').all(value.matches('^[a-zA-Z0-9][a-zA-Z0-9._%+-]*[a-zA-Z0-9]@[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?(\\.[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?)*\\.[a-zA-Z]{2,}$') or value.matches('^[a-zA-Z0-9]@[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?(\\.[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?)*\\.[a-zA-Z]{2,}$'))" />
        <source value="http://akinox.com/fhir/StructureDefinition/gap-related-person-profile" />
      </constraint>
    </element>
    <element id="RelatedPerson.relationship">
      <path value="RelatedPerson.relationship" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="coding.system" />
        </discriminator>
        <rules value="open" />
      </slicing>
      <min value="1" />
      <max value="2" />
    </element>
    <element id="RelatedPerson.relationship:roleCode">
      <path value="RelatedPerson.relationship" />
      <sliceName value="roleCode" />
      <min value="1" />
      <max value="2" />
    </element>
    <element id="RelatedPerson.relationship:roleCode.coding.system">
      <path value="RelatedPerson.relationship.coding.system" />
      <min value="1" />
      <patternUri value="http://terminology.hl7.org/CodeSystem/v3-RoleCode" />
    </element>
    <element id="RelatedPerson.relationship:roleCode.coding.code">
      <path value="RelatedPerson.relationship.coding.code" />
      <min value="1" />
      <binding>
        <strength value="required" />
        <valueSet value="http://akinox.com/fhir/ValueSet/gap-relatedperson-role-valueset" />
      </binding>
    </element>
    <element id="RelatedPerson.name">
      <path value="RelatedPerson.name" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="RelatedPerson.name.family">
      <path value="RelatedPerson.name.family" />
      <min value="1" />
    </element>
    <element id="RelatedPerson.name.given">
      <path value="RelatedPerson.name.given" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="RelatedPerson.telecom">
      <path value="RelatedPerson.telecom" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="system" />
        </discriminator>
        <rules value="open" />
      </slicing>
      <min value="1" />
    </element>
    <element id="RelatedPerson.telecom:phone">
      <path value="RelatedPerson.telecom" />
      <sliceName value="phone" />
      <min value="0" />
      <max value="1" />
    </element>
    <element id="RelatedPerson.telecom:phone.system">
      <path value="RelatedPerson.telecom.system" />
      <min value="1" />
      <patternCode value="phone" />
    </element>
    <element id="RelatedPerson.telecom:phone.value">
      <path value="RelatedPerson.telecom.value" />
      <min value="1" />
    </element>
    <element id="RelatedPerson.telecom:phone.use">
      <path value="RelatedPerson.telecom.use" />
      <min value="1" />
      <binding>
        <strength value="required" />
        <valueSet value="http://akinox.com/fhir/ValueSet/gap-phone-telecom-use-valueset" />
      </binding>
    </element>
    <element id="RelatedPerson.telecom:phone.rank">
      <path value="RelatedPerson.telecom.rank" />
      <min value="1" />
    </element>
    <element id="RelatedPerson.telecom:email">
      <path value="RelatedPerson.telecom" />
      <sliceName value="email" />
      <min value="0" />
      <max value="1" />
    </element>
    <element id="RelatedPerson.telecom:email.system">
      <path value="RelatedPerson.telecom.system" />
      <min value="1" />
      <patternCode value="email" />
    </element>
    <element id="RelatedPerson.telecom:email.use">
      <path value="RelatedPerson.telecom.use" />
      <min value="1" />
      <binding>
        <strength value="required" />
        <valueSet value="http://akinox.com/fhir/ValueSet/gap-email-telecom-use-valueset" />
      </binding>
    </element>
    <element id="RelatedPerson.telecom:email.rank">
      <path value="RelatedPerson.telecom.rank" />
      <min value="1" />
    </element>
    <element id="RelatedPerson.communication.language">
      <path value="RelatedPerson.communication.language" />
      <binding>
        <strength value="required" />
        <valueSet value="http://akinox.com/fhir/ValueSet/gap-language-valueset" />
      </binding>
    </element>
    <element id="RelatedPerson.communication.preferred">
      <path value="RelatedPerson.communication.preferred" />
      <min value="1" />
      <patternBoolean value="true" />
    </element>
  </differential>
</StructureDefinition>