Clinical Document Architecture with Australian Schema, published by Australian Digital Health Agency. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/AuDigitalHealth/cda-au-schema/ and changes regularly. See the Directory of published versions

: CompressionAlgorithm - JSON Representation

Draft as of 2025-08-28 Maturity Level: 1

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{
  "resourceType" : "ValueSet",
  "id" : "CDACompressionAlgorithm",
  "text" : {
    "status" : "extensions",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: ValueSet CDACompressionAlgorithm</b></p><a name=\"CDACompressionAlgorithm\"> </a><a name=\"hcCDACompressionAlgorithm\"> </a><ul><li>Include these codes as defined in <a href=\"http://terminology.hl7.org/5.2.0/CodeSystem-v3-CompressionAlgorithm.html\"><code>http://terminology.hl7.org/CodeSystem/v3-CompressionAlgorithm</code></a> version <code>2.1.1</code><table class=\"none\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td><a href=\"http://terminology.hl7.org/5.2.0/CodeSystem-v3-CompressionAlgorithm.html#v3-CompressionAlgorithm-DF\">DF</a></td><td style=\"color: #cccccc\">deflate</td><td>The deflate compressed data format as specified in RFC 1951 \\[http://www.ietf.org/rfc/rfc1951.txt\\].</td></tr><tr><td><a href=\"http://terminology.hl7.org/5.2.0/CodeSystem-v3-CompressionAlgorithm.html#v3-CompressionAlgorithm-GZ\">GZ</a></td><td style=\"color: #cccccc\">gzip</td><td>A compressed data format that is compatible with the widely used GZIP utility as specified in RFC 1952 \\[http://www.ietf.org/rfc/rfc1952.txt\\] (uses the deflate algorithm).</td></tr><tr><td><a href=\"http://terminology.hl7.org/5.2.0/CodeSystem-v3-CompressionAlgorithm.html#v3-CompressionAlgorithm-ZL\">ZL</a></td><td style=\"color: #cccccc\">zlib</td><td>A compressed data format that also uses the deflate algorithm. Specified as RFC 1950 \\[http://www.ietf.org/rfc/rfc1952.txt\\]</td></tr><tr><td><a href=\"http://terminology.hl7.org/5.2.0/CodeSystem-v3-CompressionAlgorithm.html#v3-CompressionAlgorithm-Z\">Z</a></td><td style=\"color: #cccccc\">compress</td><td>Original UNIX compress algorithm and file format using the LZC algorithm (a variant of LZW). Patent encumbered and less efficient than deflate.</td></tr></table></li></ul></div>"
  },
  "extension" : [
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger" : 1,
      "_valueInteger" : {
        "extension" : [
          {
            "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
            "valueCanonical" : "http://ns.electronichealth.net.au/cda/ImplementationGuide/au.digitalhealth.cda.schema"
          }
        ]
      }
    }
  ],
  "url" : "http://hl7.org/cda/stds/core/ValueSet/CDACompressionAlgorithm",
  "version" : "1.0.0",
  "name" : "CDACompressionAlgorithm",
  "title" : "CompressionAlgorithm",
  "status" : "draft",
  "experimental" : false,
  "date" : "2025-08-28T22:37:35+00:00",
  "description" : "Type of compression algorithm used - limited to 4 concepts from original CDA definition",
  "compose" : {
    "include" : [
      {
        "system" : "http://terminology.hl7.org/CodeSystem/v3-CompressionAlgorithm",
        "version" : "2.1.1",
        "concept" : [
          {
            "code" : "DF"
          },
          {
            "code" : "GZ"
          },
          {
            "code" : "ZL"
          },
          {
            "code" : "Z"
          }
        ]
      }
    ]
  }
}