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• Operations

12.17.9 Resource ActivityDefinition - Operations

Clinical Decision Support Work Group

Maturity Level: 2

Trial Use

Compartments: Not linked to any defined compartments

This resource has 2 operations associated with it:

For more information about operations, including how they are invoked, see Operations.

12.17.9.1 Apply

The apply operation realizes a definition in a specific context

The official URL for this operation definition is

 http://hl7.org/fhir/OperationDefinition/ActivityDefinition-apply

Formal Definition (as a OperationDefinition).

URL: [base]/ActivityDefinition/[id]/$apply

This is not an idempotent operation

The result of invoking this operation is a resource of the type specified by the activity definition, with all the definitions resolved as appropriate for the type of resource. Any dynamicValue elements will be evaluated and the resulting value used for the values of the appropriate elements of the returned resource. If the ActivityDefinition includes library references, those libraries will be available to the evaluated expressions. If those libraries have parameters, those parameters will be bound by name to the parameters given to the operation

12.17.9.1.1 Examples

Apply a citalopram prescription activity definition to a patient (Request):

GET [base]/ActivityDefinition/citalopramPrescription/$apply?patient=124

Returned on successful application (Response):

HTTP/1.1 200 OK

<?xml version="1.0" encoding="UTF-8"?>
<MedicationRequest xmlns="http://hl7.org/fhir">
  <!-- This example demonstrates the result of an $apply operation for the citalopramPrescription activity definition. -->
  <id value="apply-operation-response"/>
  <text>
	<status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml">
    Generated...
    </div>
  </text>
  <contained>
    <Medication>
      <id value="citalopramMedication"/>
      <code>
        <coding>
          <system value="http://www.nlm.nih.gov/research/umls/rxnorm"/>
          <code value="200371"/>
        </coding>
        <text value="citalopram"/>
      </code>
        <form>
          <coding>
            <system value="http://snomed.info/sct"/>
            <code value="385055001"/>
            <display value="Tablet dose form"/>
          </coding>
          <text value="Tablet dose form"/>
        </form>
        <ingredient>
          <itemReference>
            <reference value="#citalopramSubstance"/>
          </itemReference>
          <amount>
            <numerator>
              <value value="20"/>
              <unit value="mg"/>
            </numerator>
            <denominator>
              <value value="1"/>
              <unit value="{tbl}"/>
            </denominator>
          </amount>
        </ingredient>
    </Medication>
  </contained>
  <contained>
    <Substance>
      <id value="citalopramSubstance"/>
      <code>
        <coding>
          <system value="http://www.nlm.nih.gov/research/umls/rxnorm"/>
          <code value="2556"/>
        </coding>
        <text value="citalopram"/>
      </code>
    </Substance>
  </contained>
  <definition>
    <reference value="ActivityDefinition/citalopramPrescription"/>
  </definition>
  <status value="draft"/>
  <intent value="proposal"/>
  <medicationReference>
	  <reference value="#citalopramMedication"/>
  </medicationReference>
  <subject>
	  <reference value="Patient/124"/>
  </subject>
  <dosageInstruction>
	<text value="1 tablet oral 1 time daily"/>
	<timing>
		<repeat>
			<frequency value="1"/>
			<period value="1"/>
			<periodUnit value="d"/>
		</repeat>
	</timing>
	<route>
		<coding>
			<code value="26643006"/>
			<display value="Oral route (qualifier value)"/>
		</coding>
		<text value="Oral route (qualifier value)"/>
	</route>
	<doseQuantity>
		<value value="1"/>
		<unit value="{tbl}"/>
	</doseQuantity>
  </dosageInstruction>
  <dispenseRequest>
	  <numberOfRepeatsAllowed value="3"/>
	  <quantity>
		  <value value="30"/>
		  <unit value="{tbl}"/>
	  </quantity>
  </dispenseRequest>
</MedicationRequest>

12.17.9.2 Data Requirements

The data-requirements operation aggregates and returns the parameters and data requirements for the activity definition and all its dependencies as a single module definition library

The official URL for this operation definition is

 http://hl7.org/fhir/OperationDefinition/ActivityDefinition-data-requirements

Formal Definition (as a OperationDefinition).

URL: [base]/ActivityDefinition/[id]/$data-requirements

This is not an idempotent operation

The effect of invoking this operation is to determine the aggregate set of data requirements and dependencies for the activity definition. The result is a Library resource with a type of module-definition that contains all the parameter definitions and data requirements of the activity definition and any libraries referenced by it. Implementations SHOULD aggregate data requirements intelligently (i.e. by collapsing overlapping data requirements)

12.17.9.2.1 Examples

Request data requirements for the administer zika virus exposure assessment activity definition (Request):

GET [base]/ActivityDefinition/administer-zika-virus-exposure-assessment/$data-requirements

Returned on successful evaluation (Response):

HTTP/1.1 200 OK

{
  "resourceType": "Library",
  "type": {
    "coding": [
      {
        "code": "module-definition"
      }
    ]
  },
  "relatedArtifact": [
    {
      "type": "depends-on",
      "display": "Zika Affected Areas",
      "resource": {
        "reference": "ValueSet/zika-affected-areas"
      }
    },
    {
      "type": "depends-on",
      "display": "Pregnancy",
      "resource": {
        "identifier": "urn:oid:X.Y.Z",
        "display": "Pregnancy value set"
      }
    },
    {
      "type": "depends-on",
      "display": "Zika Exposure Assessment",
      "resource": {
        "identifier": "urn:oid:X.Y.Z",
        "display": "Zika Virus Exposure Assessment value set"
      }
    },
    {
      "type": "depends-on",
      "display": "Zika Virus Signs and Symptoms",
      "url": "https://phinvads.cdc.gov/vads/ViewValueSet.action?oid=2.16.840.1.114222.4.11.7459",
      "resource": {
        "identifier": "urn:oid:2.16.840.1.114222.4.11.7459",
        "display": "Zika Virus Signs and Symptoms value set"
      }
    },
  ]
  "dataRequirement": [
    {
      "type": "Condition",
      "codeFilter": [
        {
          "path": "code",
          "valueSetString": "Pregnancy"
        }
      ]
    },
    {
      "type": "Patient"
    },
    {
      "type": "Observation",
      "codeFilter": [
        {
          "path": "code",
          "valueSetString": [
            "Zika Exposure Assessment"
          ]
        },
        {
          "path": "status",
          "valueCode": [
            "final"
          ]
        }
      ]
    },
    {
      "type": "Condition",
      "codeFilter": [
        {
          "path": "category",
          "valueCode": [
            "diagnosis"
          ]
        },
        {
          "path": "clinicalStatus",
          "valueCode": [
            "confirmed"
          ]
        },
        {
          "path": "code",
          "valueSetString": "Zika Virus Signs and Symptoms"
        }
      ]
    }
  ]
}