Clinical Document Architecture
2.0.2-sd - release

This page is part of the CDA: Clinical Document Architecture (v2.0.2-sd: CDA 2.0 - Informative) generated with FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Logical Model: ST: CharacterString (V3 Data Type)

Official URL: http://hl7.org/cda/stds/core/StructureDefinition/ST Version: 2.0.2-sd
Active as of 2025-12-12 Computable Name: ST

The character string data type stands for text data, primarily intended for machine processing (e.g., sorting, querying, indexing, etc.) Used for names, symbols, and formal expressions.

Usages:

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.

This structure is derived from ANY

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. ST C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: text-null
... @representation 0..1 cs Fixed Value: TXT
... @mediaType 0..1 cs Fixed Value: text/plain
... @language 0..1 cs

doco Documentation for this format

Constraints

Id Grade Path(s) Description Expression
text-null error ST xmlText and nullFlavor are mutually exclusive (one must be present) (xmlText | nullFlavor).count() = 1
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. ST C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: text-null
... (Choice of one) 1..1
.... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
.... xmlText 0..1 st Allows for mixed text content
... @representation 0..1 cs Fixed Value: TXT
... @mediaType 0..1 cs Fixed Value: text/plain

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
ST.nullFlavor Base required CDANullFlavor 📦2.0.2-sd This IG

Constraints

Id Grade Path(s) Description Expression
text-null error ST xmlText and nullFlavor are mutually exclusive (one must be present) (xmlText | nullFlavor).count() = 1
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. ST C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: text-null
... (Choice of one) 1..1
.... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
.... xmlText 0..1 st Allows for mixed text content
... @representation 0..1 cs Fixed Value: TXT
... @mediaType 0..1 cs Fixed Value: text/plain

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
ST.nullFlavor Base required CDANullFlavor 📦2.0.2-sd This IG

Constraints

Id Grade Path(s) Description Expression
text-null error ST xmlText and nullFlavor are mutually exclusive (one must be present) (xmlText | nullFlavor).count() = 1

This structure is derived from ANY

Differential View

This structure is derived from ANY

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. ST C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: text-null
... @representation 0..1 cs Fixed Value: TXT
... @mediaType 0..1 cs Fixed Value: text/plain
... @language 0..1 cs

doco Documentation for this format

Constraints

Id Grade Path(s) Description Expression
text-null error ST xmlText and nullFlavor are mutually exclusive (one must be present) (xmlText | nullFlavor).count() = 1

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. ST C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: text-null
... (Choice of one) 1..1
.... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
.... xmlText 0..1 st Allows for mixed text content
... @representation 0..1 cs Fixed Value: TXT
... @mediaType 0..1 cs Fixed Value: text/plain

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
ST.nullFlavor Base required CDANullFlavor 📦2.0.2-sd This IG

Constraints

Id Grade Path(s) Description Expression
text-null error ST xmlText and nullFlavor are mutually exclusive (one must be present) (xmlText | nullFlavor).count() = 1

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. ST C 1..* ANY XML Namespace: urn:hl7-org:v3
Base for all types and resources

Elements defined in Ancestors:@nullFlavor
Logical Container: ClinicalDocument (CDA Class)
Constraints: text-null
... (Choice of one) 1..1
.... @nullFlavor 0..1 cs Binding: CDANullFlavor (required)
.... xmlText 0..1 st Allows for mixed text content
... @representation 0..1 cs Fixed Value: TXT
... @mediaType 0..1 cs Fixed Value: text/plain

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
ST.nullFlavor Base required CDANullFlavor 📦2.0.2-sd This IG

Constraints

Id Grade Path(s) Description Expression
text-null error ST xmlText and nullFlavor are mutually exclusive (one must be present) (xmlText | nullFlavor).count() = 1

This structure is derived from ANY

 

Other representations of profile: CSV, Excel