Clinical Document Architecture, published by Health Level 7. This guide is not an authorized publication; it is the continuous build for version 2.0.1-sd built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/CDA-core-sd/ and changes regularly. See the Directory of published versions

• Content
• Detailed Descriptions
• Mappings
• XML
• JSON

Logical Model: Precondition (CDA Class)

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

Usages:

• Use this Logical Model: Act (CDA Class), Encounter (CDA Class), Observation (CDA Class), ObservationMedia (CDA Class)... Show 5 more, Organizer (CDA Class), Procedure (CDA Class), RegionOfInterest (CDA Class), SubstanceAdministration (CDA Class) and Supply (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.

• Key Elements Table
• Differential Table
• Snapshot Table
• Statistics/References
• All

This structure is derived from InfrastructureRoot

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Precondition		1..1	InfrastructureRoot	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId Base for all types and resources Instance of this type are validated by templateId Logical Container: ClinicalDocument (CDA Class)
@typeCode		0..1	cs	Binding: CDAActRelationshipType (required) Fixed Value: PRCN
criterion		1..1	Criterion
Documentation for this format

Terminology Bindings (Differential)

Path	Conformance	ValueSet / Code	URI
Precondition.typeCode	required	Fixed Value: PRCN http://hl7.org/cda/stds/core/ValueSet/CDAActRelationshipType From this IG

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Precondition		1..1	InfrastructureRoot	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId Base for all types and resources Instance of this type are validated by templateId Logical Container: ClinicalDocument (CDA Class)
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
realmCode		0..*	CS
typeId	C	0..1	II	Constraints: II-1
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
@assigningAuthorityName		0..1	st
@displayable		0..1	bl
@root		1..1	oid, uuid, ruid	Fixed Value: 2.16.840.1.113883.1.3
@extension		1..1	st
templateId		0..*	II
@typeCode		0..1	cs	Binding: CDAActRelationshipType (required) Fixed Value: PRCN
criterion		1..1	Criterion
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Precondition.nullFlavor	required	CDANullFlavor http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor From this IG
Precondition.typeId.nullFlavor	required	CDANullFlavor http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor From this IG
Precondition.typeCode	required	Fixed Value: PRCN http://hl7.org/cda/stds/core/ValueSet/CDAActRelationshipType From this IG

Constraints

Id	Grade	Path(s)	Details	Requirements
II-1	error	Precondition.typeId	An II instance must have either a root or an nullFlavor. : root.exists() or nullFlavor.exists()

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Precondition		1..1	InfrastructureRoot	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId Base for all types and resources Instance of this type are validated by templateId Logical Container: ClinicalDocument (CDA Class)
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
realmCode		0..*	CS
typeId	C	0..1	II	Constraints: II-1
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
@assigningAuthorityName		0..1	st
@displayable		0..1	bl
@root		1..1	oid, uuid, ruid	Fixed Value: 2.16.840.1.113883.1.3
@extension		1..1	st
templateId		0..*	II
@typeCode		0..1	cs	Binding: CDAActRelationshipType (required) Fixed Value: PRCN
criterion		1..1	Criterion
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Precondition.nullFlavor	required	CDANullFlavor http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor From this IG
Precondition.typeId.nullFlavor	required	CDANullFlavor http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor From this IG
Precondition.typeCode	required	Fixed Value: PRCN http://hl7.org/cda/stds/core/ValueSet/CDAActRelationshipType From this IG

Constraints

Id	Grade	Path(s)	Details	Requirements
II-1	error	Precondition.typeId	An II instance must have either a root or an nullFlavor. : root.exists() or nullFlavor.exists()

This structure is derived from InfrastructureRoot

Summary

Mandatory: 0 element(1 nested mandatory element)
Fixed: 1 element

Structures

This structure refers to these other structures:

• cs: Coded Simple Value (http://hl7.org/cda/stds/core/StructureDefinition/cs-simple)

Differential View

This structure is derived from InfrastructureRoot

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Precondition		1..1	InfrastructureRoot	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId Base for all types and resources Instance of this type are validated by templateId Logical Container: ClinicalDocument (CDA Class)
@typeCode		0..1	cs	Binding: CDAActRelationshipType (required) Fixed Value: PRCN
criterion		1..1	Criterion
Documentation for this format

Terminology Bindings (Differential)

Path	Conformance	ValueSet / Code	URI
Precondition.typeCode	required	Fixed Value: PRCN http://hl7.org/cda/stds/core/ValueSet/CDAActRelationshipType From this IG

Key Elements View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Precondition		1..1	InfrastructureRoot	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId Base for all types and resources Instance of this type are validated by templateId Logical Container: ClinicalDocument (CDA Class)
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
realmCode		0..*	CS
typeId	C	0..1	II	Constraints: II-1
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
@assigningAuthorityName		0..1	st
@displayable		0..1	bl
@root		1..1	oid, uuid, ruid	Fixed Value: 2.16.840.1.113883.1.3
@extension		1..1	st
templateId		0..*	II
@typeCode		0..1	cs	Binding: CDAActRelationshipType (required) Fixed Value: PRCN
criterion		1..1	Criterion
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Precondition.nullFlavor	required	CDANullFlavor http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor From this IG
Precondition.typeId.nullFlavor	required	CDANullFlavor http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor From this IG
Precondition.typeCode	required	Fixed Value: PRCN http://hl7.org/cda/stds/core/ValueSet/CDAActRelationshipType From this IG

Constraints

Id	Grade	Path(s)	Details	Requirements
II-1	error	Precondition.typeId	An II instance must have either a root or an nullFlavor. : root.exists() or nullFlavor.exists()

Snapshot View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Precondition		1..1	InfrastructureRoot	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId Base for all types and resources Instance of this type are validated by templateId Logical Container: ClinicalDocument (CDA Class)
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
realmCode		0..*	CS
typeId	C	0..1	II	Constraints: II-1
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
@assigningAuthorityName		0..1	st
@displayable		0..1	bl
@root		1..1	oid, uuid, ruid	Fixed Value: 2.16.840.1.113883.1.3
@extension		1..1	st
templateId		0..*	II
@typeCode		0..1	cs	Binding: CDAActRelationshipType (required) Fixed Value: PRCN
criterion		1..1	Criterion
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet / Code	URI
Precondition.nullFlavor	required	CDANullFlavor http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor From this IG
Precondition.typeId.nullFlavor	required	CDANullFlavor http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor From this IG
Precondition.typeCode	required	Fixed Value: PRCN http://hl7.org/cda/stds/core/ValueSet/CDAActRelationshipType From this IG

Constraints

Id	Grade	Path(s)	Details	Requirements
II-1	error	Precondition.typeId	An II instance must have either a root or an nullFlavor. : root.exists() or nullFlavor.exists()

This structure is derived from InfrastructureRoot

Summary

Mandatory: 0 element(1 nested mandatory element)
Fixed: 1 element

Structures

This structure refers to these other structures:

• cs: Coded Simple Value (http://hl7.org/cda/stds/core/StructureDefinition/cs-simple)

Other representations of profile: CSV, Excel