LabPrecondition (CDA Class) - Clinical Document Architecture v2.0.1-sd-202510-matchbox-patch

• Table of Contents
• Artifacts Summary
• LabPrecondition (CDA Class)

Logical Model: LabPrecondition (CDA Class)

Official URL:http://hl7.org/cda/stds/core/StructureDefinition/LabPrecondition	Version:2.0.1-sd-202510-matchbox-patch
Active as of 2025-10-29	Computable Name:CDAR2.LabPrecondition

The precondition class, derived from the ActRelationship class, is used along with the LabPrecondition class to express a condition that must hold true before some over activity occurs.

Usages:

• Use this Logical Model: ObservationRange (CDA Class)

You can also check for usages in the FHIR IG Statistics

Formal Views of Template Content

Description of Template, Differentials, Snapshots and how the different presentations work.

Other representations of profile: CSV, Excel

Resource Content

{
  "resourceType" : "StructureDefinition",
  "id" : "LabPrecondition",
  "extension" : [
    {
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/xml-namespace",
      "valueUri" : "urn:oid:1.3.6.1.4.1.19376.1.3.2"
    },
    {
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/xml-name",
      "valueString" : "LabPrecondition"
    },
    {
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/logical-container",
      "valueUri" : "http://hl7.org/cda/stds/core/StructureDefinition/ClinicalDocument"
    }
  ],
  "url" : "http://hl7.org/cda/stds/core/StructureDefinition/LabPrecondition",
  "version" : "2.0.1-sd-202510-matchbox-patch",
  "name" : "CDAR2.LabPrecondition",
  "title" : "LabPrecondition (CDA Class)",
  "status" : "active",
  "experimental" : false,
  "date" : "2025-10-29T22:15:57+01:00",
  "publisher" : "Health Level 7",
  "contact" : [
    {
      "name" : "HL7 International - Structured Documents",
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org/Special/committees/structure"
        },
        {
          "system" : "email",
          "value" : "structdog@lists.HL7.org"
        }
      ]
    }
  ],
  "description" : "The precondition class, derived from the ActRelationship class, is used along with the LabPrecondition class to express a condition that must hold true before some over activity occurs.",
  "fhirVersion" : "5.0.0",
  "mapping" : [
    {
      "identity" : "rim",
      "uri" : "http://hl7.org/v3",
      "name" : "RIM Mapping"
    }
  ],
  "kind" : "logical",
  "abstract" : false,
  "type" : "http://hl7.org/cda/stds/core/StructureDefinition/LabPrecondition",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Base",
  "derivation" : "specialization",
  "differential" : {
    "element" : [
      {
        "id" : "LabPrecondition",
        "path" : "LabPrecondition",
        "min" : 1,
        "max" : "1"
      },
      {
        "id" : "LabPrecondition.nullFlavor",
        "path" : "LabPrecondition.nullFlavor",
        "representation" : ["xmlAttr"],
        "label" : "Exceptional Value Detail",
        "definition" : "If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.",
        "min" : 0,
        "max" : "1",
        "type" : [
          {
            "code" : "code"
          }
        ],
        "binding" : {
          "strength" : "required",
          "valueSet" : "http://terminology.hl7.org/ValueSet/v3-NullFlavor"
        }
      },
      {
        "id" : "LabPrecondition.typeCode",
        "path" : "LabPrecondition.typeCode",
        "representation" : ["xmlAttr"],
        "min" : 0,
        "max" : "1",
        "type" : [
          {
            "code" : "code"
          }
        ],
        "binding" : {
          "strength" : "required",
          "valueSet" : "http://terminology.hl7.org/ValueSet/v3-ActRelationshipType"
        }
      },
      {
        "id" : "LabPrecondition.realmCode",
        "path" : "LabPrecondition.realmCode",
        "definition" : "When valued in an instance, this attribute signals the imposition of realm-specific constraints. The value of this attribute identifies the realm in question",
        "min" : 0,
        "max" : "*",
        "type" : [
          {
            "code" : "http://hl7.org/cda/stds/core/StructureDefinition/CS"
          }
        ]
      },
      {
        "id" : "LabPrecondition.typeId",
        "path" : "LabPrecondition.typeId",
        "definition" : "When valued in an instance, this attribute signals the imposition of constraints defined in an HL7-specified message type. This might be a common type (also known as CMET in the messaging communication environment), or content included within a wrapper. The value of this attribute provides a unique identifier for the type in question.",
        "min" : 0,
        "max" : "1",
        "type" : [
          {
            "code" : "http://hl7.org/cda/stds/core/StructureDefinition/II"
          }
        ]
      },
      {
        "id" : "LabPrecondition.templateId",
        "path" : "LabPrecondition.templateId",
        "definition" : "When valued in an instance, this attribute signals the imposition of a set of template-defined constraints. The value of this attribute provides a unique identifier for the templates in question",
        "min" : 0,
        "max" : "*",
        "type" : [
          {
            "code" : "http://hl7.org/cda/stds/core/StructureDefinition/II"
          }
        ]
      },
      {
        "id" : "LabPrecondition.criterion",
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/tools/StructureDefinition/xml-namespace",
            "valueUri" : "urn:oid:1.3.6.1.4.1.19376.1.3.2"
          }
        ],
        "path" : "LabPrecondition.criterion",
        "min" : 1,
        "max" : "1",
        "type" : [
          {
            "code" : "http://hl7.org/cda/stds/core/StructureDefinition/LabCriterion"
          }
        ]
      }
    ]
  }
}