SQL on FHIR, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 2.1.0-pre built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/sql-on-fhir/ and changes regularly. See the Directory of published versions

• Narrative Content
• XML
• JSON

: Output Format Codes - JSON Representation

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{
  "resourceType" : "CodeSystem",
  "id" : "OutputFormatCodes",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem OutputFormatCodes</b></p><a name=\"OutputFormatCodes\"> </a><a name=\"hcOutputFormatCodes\"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/uv/sql-on-fhir/CodeSystem/OutputFormatCodes</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">csv<a name=\"OutputFormatCodes-csv\"> </a></td><td>CSV</td><td>Comma-separated values</td></tr><tr><td style=\"white-space:nowrap\">ndjson<a name=\"OutputFormatCodes-ndjson\"> </a></td><td>NDJSON</td><td>Newline-delimited JSON</td></tr><tr><td style=\"white-space:nowrap\">parquet<a name=\"OutputFormatCodes-parquet\"> </a></td><td>Parquet</td><td>Apache Parquet</td></tr><tr><td style=\"white-space:nowrap\">json<a name=\"OutputFormatCodes-json\"> </a></td><td>JSON</td><td>JavaScript Object Notation</td></tr><tr><td style=\"white-space:nowrap\">fhir<a name=\"OutputFormatCodes-fhir\"> </a></td><td>FHIR</td><td>FHIR Parameters resource</td></tr></table></div>"
  },
  "extension" : [
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode" : "fhir"
    },
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode" : "draft",
      "_valueCode" : {
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
            "valueCanonical" : "http://hl7.org/fhir/uv/sql-on-fhir/ImplementationGuide/hl7.fhir.uv.sql-on-fhir"
          }
        ]
      }
    }
  ],
  "url" : "http://hl7.org/fhir/uv/sql-on-fhir/CodeSystem/OutputFormatCodes",
  "identifier" : [
    {
      "system" : "urn:ietf:rfc:3986",
      "value" : "urn:oid:2.16.840.1.113883.4.642.40.77.16.3"
    }
  ],
  "version" : "2.1.0-pre",
  "name" : "OutputFormatCodes",
  "title" : "Output Format Codes",
  "status" : "draft",
  "experimental" : false,
  "date" : "2026-07-28T04:38:44+00:00",
  "publisher" : "HL7 International / FHIR Infrastructure",
  "contact" : [
    {
      "name" : "HL7 International / FHIR Infrastructure",
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org/Special/committees/fiwg"
        }
      ]
    }
  ],
  "description" : "Output format codes for SQL on FHIR.",
  "jurisdiction" : [
    {
      "coding" : [
        {
          "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code" : "001",
          "display" : "World"
        }
      ]
    }
  ],
  "caseSensitive" : true,
  "content" : "complete",
  "count" : 5,
  "concept" : [
    {
      "code" : "csv",
      "display" : "CSV",
      "definition" : "Comma-separated values"
    },
    {
      "code" : "ndjson",
      "display" : "NDJSON",
      "definition" : "Newline-delimited JSON"
    },
    {
      "code" : "parquet",
      "display" : "Parquet",
      "definition" : "Apache Parquet"
    },
    {
      "code" : "json",
      "display" : "JSON",
      "definition" : "JavaScript Object Notation"
    },
    {
      "code" : "fhir",
      "display" : "FHIR",
      "definition" : "FHIR Parameters resource"
    }
  ]
}