---
type: "codesystem"
title: "Task Input/Output Parameter Type"
codesystem: "task-inputoutput-parameter-type"
---
# Task Input/Output Parameter Type

- **Official URL**: http://hl7.org/fhir/task-inputoutput-parameter-type
- **Version**: 6.0.0
- **Status**: active
- **Name**: TaskInputOutputParameterType
- **Title**: Task Input/Output Parameter Type
- **Publisher**: HL7 (FHIR Project)
- **Description**: The input and output types for the task.
- **Case Sensitive**: true
- **Content**: complete

## Concepts

| Code | Display | Definition |
| --- | --- | --- |
| collected-specimen | Collected Specimen | A specimen that has been collected. |
| reference-results | Reference Results | Reference results to compare against. |
| prior-results | Prior Results | Results from a previous order. |
| concomitant-medications | Concomitant Medications | Medications, supplements or drugs the patient consumes at the same time as something else. |
| filler-order | Filler Order | The order number associated with the filler. |
| data-query | data query input | Indicates the parameters of a FHIR RESTful search to be executed whose results are requested by a data-request Task. The content will be the portion of the query URL following the 'base'. E.g.  `Observation?code=foo`. |
| data-code | data code input | A code describing the information requested by a data-request Task - often a code for a type of document |
| data-value | data values output | A FHIR resource, typically a search-set Bundle, containing the requested information in response to a data-request Task |

## CodeSystem XML



```xml
<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="task-inputoutput-parameter-type"/>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="oo"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="informative"/>
  </extension>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="1"/>
  </extension>
  <url value="http://hl7.org/fhir/task-inputoutput-parameter-type"/>
  <version value="6.0.0"/>
  <name value="TaskInputOutputParameterType"/>
  <title value="Task Input/Output Parameter Type"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2025-03-12T10:00:00+08:00"/>
  <publisher value="HL7 (FHIR Project)"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org/fhir"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="fhir@lists.hl7.org"/>
    </telecom>
  </contact>
  <description value="The input and output types for the task."/>
  <caseSensitive value="true"/>
  <valueSet value="http://hl7.org/fhir/ValueSet/task-inputoutput-parameter-type"/>
  <content value="complete"/>
  <concept>
    <code value="collected-specimen"/>
    <display value="Collected Specimen"/>
    <definition value="A specimen that has been collected."/>
  </concept>
  <concept>
    <code value="reference-results"/>
    <display value="Reference Results"/>
    <definition value="Reference results to compare against."/>
  </concept>
  <concept>
    <code value="prior-results"/>
    <display value="Prior Results"/>
    <definition value="Results from a previous order."/>
  </concept>
  <concept>
    <code value="concomitant-medications"/>
    <display value="Concomitant Medications"/>
    <definition value="Medications, supplements or drugs the patient consumes at the same time as something else."/>
  </concept>
  <concept>
    <code value="filler-order"/>
    <display value="Filler Order"/>
    <definition value="The order number associated with the filler."/>
  </concept>
  <concept>
    <code value="data-query"/>
    <display value="data query input"/>
    <definition value="Indicates the parameters of a FHIR RESTful search to be executed whose results are requested by a data-request Task. The content will be the portion of the query URL following the 'base'. E.g.  `Observation?code=foo`."/>
  </concept>
  <concept>
    <code value="data-code"/>
    <display value="data code input"/>
    <definition value="A code describing the information requested by a data-request Task - often a code for a type of document"/>
  </concept>
  <concept>
    <code value="data-value"/>
    <display value="data values output"/>
    <definition value="A FHIR resource, typically a search-set Bundle, containing the requested information in response to a data-request Task"/>
  </concept>
</CodeSystem>
```