ST: CharacterString (V3 Data Type) - Clinical Document Architecture v2.0.1-sd-202510-matchbox-patch

• Table of Contents
• Artifacts Summary
• ST: CharacterString (V3 Data Type)

Logical Model: ST: CharacterString (V3 Data Type)

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

• Derived from this Logical Model: ADXP: CharacterString (V3 Data Type), ENXP: Entity Name Part (V3 Data Type) and SC: CharacterStringWithCode (V3 Data Type)
• Use this Logical Model: ClinicalDocument (CDA Class), Criterion (CDA Class), LabCriterion (CDA Class), Material (CDA Class)...Show 4 more,Observation (CDA Class),ObservationRange (CDA Class),PharmPackagedMedicine (CDA Pharm Class)andSection (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" : "ST",
  "extension" : [
    {
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/logical-target",
      "_valueBoolean" : {
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/data-absent-reason",
            "valueCode" : "not-applicable"
          }
        ]
      }
    },
    {
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/xml-namespace",
      "valueUri" : "urn:hl7-org:v3"
    },
    {
      "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/ST",
  "version" : "2.0.1-sd-202510-matchbox-patch",
  "name" : "ST",
  "title" : "ST: CharacterString (V3 Data Type)",
  "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 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.",
  "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/ST",
  "baseDefinition" : "http://hl7.org/cda/stds/core/StructureDefinition/ANY",
  "derivation" : "specialization",
  "differential" : {
    "element" : [
      {
        "id" : "ST",
        "path" : "ST",
        "definition" : "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.",
        "min" : 1,
        "max" : "*",
        "constraint" : [
          {
            "key" : "text-null",
            "severity" : "error",
            "human" : "xmlText and nullFlavor are mutually exclusive (one must be present)",
            "expression" : "(xmlText | nullFlavor).count() = 1"
          }
        ]
      },
      {
        "id" : "ST.representation",
        "path" : "ST.representation",
        "representation" : ["xmlAttr"],
        "definition" : "Specifies the representation of the binary data that is the content of the binary data value",
        "min" : 0,
        "max" : "1",
        "type" : [
          {
            "code" : "code",
            "profile" : ["http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"]
          }
        ],
        "fixedCode" : "TXT"
      },
      {
        "id" : "ST.mediaType",
        "path" : "ST.mediaType",
        "representation" : ["xmlAttr"],
        "label" : "Media Type",
        "definition" : "Identifies the type of the encapsulated data and identifies a method to interpret or render the data.",
        "min" : 0,
        "max" : "1",
        "type" : [
          {
            "code" : "code",
            "profile" : ["http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"]
          }
        ],
        "fixedCode" : "text/plain"
      },
      {
        "id" : "ST.language",
        "path" : "ST.language",
        "representation" : ["xmlAttr"],
        "label" : "Language",
        "definition" : "For character based information the language property specifies the human language of the text.",
        "min" : 0,
        "max" : "1",
        "type" : [
          {
            "code" : "code",
            "profile" : ["http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"]
          }
        ]
      },
      {
        "id" : "ST.xmlText",
        "path" : "ST.xmlText",
        "representation" : ["xmlText"],
        "short" : "Allows for mixed text content",
        "comment" : "This element is represented in XML as textual content. The actual name \"xmlText\" will not appear in a CDA instance.",
        "min" : 0,
        "max" : "1",
        "type" : [
          {
            "code" : "string",
            "profile" : ["http://hl7.org/cda/stds/core/StructureDefinition/st-simple"]
          }
        ]
      }
    ]
  }
}