Clinical Document Architecture
2.0.1-sd - release
Clinical Document Architecture
2.0.1-sd - release
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
| Official URL: http://hl7.org/cda/stds/core/StructureDefinition/ExternalObservation | Version: 2.0.1-sd | |||
| Active as of 2025-10-02 | Computable Name: ExternalObservation | |||
ExternalObservation is a derivative of the RIM Observation class, used for representing external coded and other observations.
Usages:
You can also check for usages in the FHIR IG Statistics
Description of Template, Differentials, Snapshots and how the different presentations work.
This structure is derived from InfrastructureRoot
| Name | Flags | Card. | Type | Description & Constraints Filter:   |
|---|---|---|---|---|
  ExternalObservation |
1..1 | InfrastructureRoot | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId Instance of this type are validated by templateId Logical Container: ClinicalDocument (CDA Class) | |
  @classCode |
0..1 | cs | Binding: CDAActClassObservation (required) | |
| @moodCode |
0..1 | cs | Binding: CDAActMood (required) Fixed Value: EVN | |
 id |
0..* | II | ||
| code |
0..1 | CD | Binding: v3 Code System ActCode (example) | |
| text |
0..1 | ED | ||
 sdtcAuthor |
0..* | Author | XML Namespace: urn:hl7-org:sdtc XML: author (urn:hl7-org:sdtc) | |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| ExternalObservation.classCode | Base | required | CDAActClassObservation | 📦2.0.1-sd | This IG |
| ExternalObservation.moodCode | Base | required | CDAActMood | 📦2.0.1-sd | This IG |
| ExternalObservation.code | Base | example | v3 Code System ActCode | 📦2.0.0 | THO v5.2 |
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| ExternalObservation |
1..1 | InfrastructureRoot | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId 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 | ||
| @classCode |
0..1 | cs | Binding: CDAActClassObservation (required) | |
| @moodCode |
0..1 | cs | Binding: CDAActMood (required) Fixed Value: EVN | |
| id |
0..* | II | ||
| code |
0..1 | CD | Binding: v3 Code System ActCode (example) | |
| text |
0..1 | ED | ||
| sdtcAuthor |
0..* | Author | XML Namespace: urn:hl7-org:sdtc XML: author (urn:hl7-org:sdtc) | |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| ExternalObservation.nullFlavor | Base | required | CDANullFlavor | 📦2.0.1-sd | This IG |
| ExternalObservation.typeId.nullFlavor | Base | required | CDANullFlavor | 📦2.0.1-sd | This IG |
| ExternalObservation.classCode | Base | required | CDAActClassObservation | 📦2.0.1-sd | This IG |
| ExternalObservation.moodCode | Base | required | CDAActMood | 📦2.0.1-sd | This IG |
| ExternalObservation.code | Base | example | v3 Code System ActCode | 📦2.0.0 | THO v5.2 |
| Id | Grade | Path(s) | Description | Expression |
| II-1 | error | ExternalObservation.typeId | An II instance must have either a root or an nullFlavor. |
root.exists() or nullFlavor.exists()
|
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| ExternalObservation |
1..1 | InfrastructureRoot | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId 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 | ||
| @classCode |
0..1 | cs | Binding: CDAActClassObservation (required) | |
| @moodCode |
0..1 | cs | Binding: CDAActMood (required) Fixed Value: EVN | |
| id |
0..* | II | ||
| code |
0..1 | CD | Binding: v3 Code System ActCode (example) | |
| text |
0..1 | ED | ||
| sdtcAuthor |
0..* | Author | XML Namespace: urn:hl7-org:sdtc XML: author (urn:hl7-org:sdtc) | |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| ExternalObservation.nullFlavor | Base | required | CDANullFlavor | 📦2.0.1-sd | This IG |
| ExternalObservation.typeId.nullFlavor | Base | required | CDANullFlavor | 📦2.0.1-sd | This IG |
| ExternalObservation.classCode | Base | required | CDAActClassObservation | 📦2.0.1-sd | This IG |
| ExternalObservation.moodCode | Base | required | CDAActMood | 📦2.0.1-sd | This IG |
| ExternalObservation.code | Base | example | v3 Code System ActCode | 📦2.0.0 | THO v5.2 |
| Id | Grade | Path(s) | Description | Expression |
| II-1 | error | ExternalObservation.typeId | An II instance must have either a root or an nullFlavor. |
root.exists() or nullFlavor.exists()
|
This structure is derived from InfrastructureRoot
Differential View
This structure is derived from InfrastructureRoot
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| ExternalObservation |
1..1 | InfrastructureRoot | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId Instance of this type are validated by templateId Logical Container: ClinicalDocument (CDA Class) | |
| @classCode |
0..1 | cs | Binding: CDAActClassObservation (required) | |
| @moodCode |
0..1 | cs | Binding: CDAActMood (required) Fixed Value: EVN | |
| id |
0..* | II | ||
| code |
0..1 | CD | Binding: v3 Code System ActCode (example) | |
| text |
0..1 | ED | ||
| sdtcAuthor |
0..* | Author | XML Namespace: urn:hl7-org:sdtc XML: author (urn:hl7-org:sdtc) | |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| ExternalObservation.classCode | Base | required | CDAActClassObservation | 📦2.0.1-sd | This IG |
| ExternalObservation.moodCode | Base | required | CDAActMood | 📦2.0.1-sd | This IG |
| ExternalObservation.code | Base | example | v3 Code System ActCode | 📦2.0.0 | THO v5.2 |
Key Elements View
| Name | Flags | Card. | Type | Description & Constraints Filter: |
|---|---|---|---|---|
| ExternalObservation |
1..1 | InfrastructureRoot | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId 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 | ||
| @classCode |
0..1 | cs | Binding: CDAActClassObservation (required) | |
| @moodCode |
0..1 | cs | Binding: CDAActMood (required) Fixed Value: EVN | |
| id |
0..* | II | ||
| code |
0..1 | CD | Binding: v3 Code System ActCode (example) | |
| text |
0..1 | ED | ||
| sdtcAuthor |
0..* | Author | XML Namespace: urn:hl7-org:sdtc XML: author (urn:hl7-org:sdtc) | |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| ExternalObservation.nullFlavor | Base | required | CDANullFlavor | 📦2.0.1-sd | This IG |
| ExternalObservation.typeId.nullFlavor | Base | required | CDANullFlavor | 📦2.0.1-sd | This IG |
| ExternalObservation.classCode | Base | required | CDAActClassObservation | 📦2.0.1-sd | This IG |
| ExternalObservation.moodCode | Base | required | CDAActMood | 📦2.0.1-sd | This IG |
| ExternalObservation.code | Base | example | v3 Code System ActCode | 📦2.0.0 | THO v5.2 |
| Id | Grade | Path(s) | Description | Expression |
| II-1 | error | ExternalObservation.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: |
|---|---|---|---|---|
| ExternalObservation |
1..1 | InfrastructureRoot | XML Namespace: urn:hl7-org:v3 Base for all types and resources Elements defined in Ancestors:@nullFlavor, realmCode, typeId, templateId 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 | ||
| @classCode |
0..1 | cs | Binding: CDAActClassObservation (required) | |
| @moodCode |
0..1 | cs | Binding: CDAActMood (required) Fixed Value: EVN | |
| id |
0..* | II | ||
| code |
0..1 | CD | Binding: v3 Code System ActCode (example) | |
| text |
0..1 | ED | ||
| sdtcAuthor |
0..* | Author | XML Namespace: urn:hl7-org:sdtc XML: author (urn:hl7-org:sdtc) | |
| Documentation for this format | ||||
| Path | Status | Usage | ValueSet | Version | Source |
| ExternalObservation.nullFlavor | Base | required | CDANullFlavor | 📦2.0.1-sd | This IG |
| ExternalObservation.typeId.nullFlavor | Base | required | CDANullFlavor | 📦2.0.1-sd | This IG |
| ExternalObservation.classCode | Base | required | CDAActClassObservation | 📦2.0.1-sd | This IG |
| ExternalObservation.moodCode | Base | required | CDAActMood | 📦2.0.1-sd | This IG |
| ExternalObservation.code | Base | example | v3 Code System ActCode | 📦2.0.0 | THO v5.2 |
| Id | Grade | Path(s) | Description | Expression |
| II-1 | error | ExternalObservation.typeId | An II instance must have either a root or an nullFlavor. |
root.exists() or nullFlavor.exists()
|
This structure is derived from InfrastructureRoot
IG © 2019+ Health Level 7. Package hl7.cda.uv.core#2.0.1-sd based on FHIR 5.0.0. Generated 2025-10-02
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