HL7 v2.6 Vocabulary
0.1.0 - ci-build

HL7 v2.6 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v26/ and changes regularly. See the Directory of published versions

## : What subject filter (2.6 - 1.5.0) - JSON Representation

Active as of 2026-01-27

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    {
      "resourceType" : "CodeSystem",
      "id" : "whatSubjectFilter",
      "text" : {
        "status" : "generated",
        "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><ul><li>Include all codes defined in <a href=\"CodeSystem-whatSubjectFilter.html\"><code>http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter</code></a></li></ul></div>"
      },
      "extension" : [
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
          "valueString" : "2.6"
        },
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
          "valueString" : "generate correct history somehow"
        },
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
          "valueString" : "0048"
        }
      ],
      "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/whatSubjectFilter",
      "identifier" : [
        {
          "system" : "urn:ietf:rfc:3986",
          "value" : "urn:oid:2.16.840.1.113883.18.20"
        }
      ],
      "version" : "1.5.0",
      "name" : "WhatSubjectFilter",
      "title" : "What subject filter (2.6 - 1.5.0)",
      "status" : "active",
      "experimental" : true,
      "date" : "2026-01-27T19:31:23+00:00",
      "publisher" : "HL7/FO",
      "contact" : [
        {
          "name" : "HL7/FO",
          "telecom" : [
            {
              "system" : "url",
              "value" : "http://www.hl7.org"
            }
          ]
        }
      ],
      "description" : "HL7-defined code system of concepts which specify the kind of information that is required to satisfy a query request.  The values define the type of transaction inquiry.  Used in HL7 Version 2 messaging in the URD segment.",
      "copyright" : "HL7 Inc., 2026",
      "caseSensitive" : true,
      "compositional" : false,
      "content" : "complete",
      "property" : [
        {
          "code" : "versionIntroduced",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced",
          "description" : "version when was this code introduced",
          "type" : "string"
        },
        {
          "code" : "versionDeprecated",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated",
          "description" : "version when was this code deprecated",
          "type" : "string"
        },
        {
          "code" : "status",
          "uri" : "http://hl7.org/fhir/concept-properties#status",
          "description" : "A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired",
          "type" : "code"
        },
        {
          "code" : "comment",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment",
          "description" : "A string that provides additional detail pertinent to the use or understanding of the concept",
          "type" : "string"
        },
        {
          "code" : "usage",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage",
          "description" : "usage notes for this code",
          "type" : "string"
        },
        {
          "code" : "modified",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified",
          "description" : "date of last modification",
          "type" : "dateTime"
        }
      ],
      "concept" : [
        {
          "code" : "ADV",
          "display" : "Advice/diagnosis",
          "definition" : "Advice/diagnosis",
          "designation" : [
            {
              "language" : "de",
              "value" : "Ratschlag / Diagnose"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "ANU",
          "display" : "Nursing unit lookup (returns patients in beds, excluding empty beds)",
          "definition" : "Nursing unit lookup (returns patients in beds, excluding empty beds)",
          "designation" : [
            {
              "language" : "de",
              "value" : "Stationsinformation (ohne freie Betten)"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "APA",
          "display" : "Account number query, return matching visit",
          "definition" : "Account number query, return matching visit",
          "designation" : [
            {
              "language" : "de",
              "value" : "Fälle zu angefragter Rechnungsnummer"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "APM",
          "display" : "Medical record number query, returns visits for a medical record number",
          "definition" : "Medical record number query, returns visits for a medical record number",
          "designation" : [
            {
              "language" : "de",
              "value" : "Fälle zu angefragter Krankenaktennummer"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "APN",
          "display" : "Patient name lookup",
          "definition" : "Patient name lookup",
          "designation" : [
            {
              "language" : "de",
              "value" : "Patientendaten zu gegebenem Patientennamen"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "APP",
          "display" : "Physician lookup",
          "definition" : "Physician lookup",
          "designation" : [
            {
              "language" : "de",
              "value" : "Patienten des spezifizierten Arztes"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "ARN",
          "display" : "Nursing unit lookup (returns patients in beds, including empty beds)",
          "definition" : "Nursing unit lookup (returns patients in beds, including empty beds)",
          "designation" : [
            {
              "language" : "de",
              "value" : "Stationsinformation (einschließlich freier Betten)"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "CAN",
          "display" : "Cancel.  Used to cancel a query",
          "definition" : "Cancel.  Used to cancel a query",
          "designation" : [
            {
              "language" : "de",
              "value" : "Anfrage stornieren"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "DEM",
          "display" : "Demographics",
          "definition" : "Demographics",
          "designation" : [
            {
              "language" : "de",
              "value" : "Demographische Daten"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "FIN",
          "display" : "Financial",
          "definition" : "Financial",
          "designation" : [
            {
              "language" : "de",
              "value" : "Finanzdaten"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "GID",
          "display" : "Generate new identifier",
          "definition" : "Generate new identifier",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.4"
            }
          ]
        },
        {
          "code" : "GOL",
          "display" : "Goals",
          "definition" : "Goals",
          "designation" : [
            {
              "language" : "de",
              "value" : "Ziele"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3"
            }
          ]
        },
        {
          "code" : "MRI",
          "display" : "Most recent inpatient",
          "definition" : "Most recent inpatient",
          "designation" : [
            {
              "language" : "de",
              "value" : "Letzter stationärer Patient"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "MRO",
          "display" : "Most recent outpatient",
          "definition" : "Most recent outpatient",
          "designation" : [
            {
              "language" : "de",
              "value" : "Letzter ambulanter Patient"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "NCK",
          "display" : "Network clock",
          "definition" : "Network clock",
          "designation" : [
            {
              "language" : "de",
              "value" : "Netzwerk-Uhrzeit"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "NSC",
          "display" : "Network status change",
          "definition" : "Network status change",
          "designation" : [
            {
              "language" : "de",
              "value" : "Änderung des Netzwerkstatus"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "NST",
          "display" : "Network statistic",
          "definition" : "Network statistic",
          "designation" : [
            {
              "language" : "de",
              "value" : "Netzwerkstatistik"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "ORD",
          "display" : "Order",
          "definition" : "Order",
          "designation" : [
            {
              "language" : "de",
              "value" : "Auftrag / Verordnung"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "OTH",
          "display" : "Other",
          "definition" : "Other",
          "designation" : [
            {
              "language" : "de",
              "value" : "anderes"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "PRB",
          "display" : "Problems",
          "definition" : "Problems",
          "designation" : [
            {
              "language" : "de",
              "value" : "Probleme"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3"
            }
          ]
        },
        {
          "code" : "PRO",
          "display" : "Procedure",
          "definition" : "Procedure",
          "designation" : [
            {
              "language" : "de",
              "value" : "Prozedur"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "RAR",
          "display" : "Pharmacy administration information",
          "definition" : "Pharmacy administration information",
          "designation" : [
            {
              "language" : "de",
              "value" : "Erfolgte Verabreichung von Medikamenten"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "RDR",
          "display" : "Pharmacy dispense information",
          "definition" : "Pharmacy dispense information",
          "designation" : [
            {
              "language" : "de",
              "value" : "Abgabe von Medikamenten"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "RER",
          "display" : "Pharmacy encoded order information",
          "definition" : "Pharmacy encoded order information",
          "designation" : [
            {
              "language" : "de",
              "value" : "Medikamentenverordnung (Apotheke)"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "RES",
          "display" : "Result",
          "definition" : "Result",
          "designation" : [
            {
              "language" : "de",
              "value" : "Ergebnis / Befund"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "RGR",
          "display" : "Pharmacy give information",
          "definition" : "Pharmacy give information",
          "designation" : [
            {
              "language" : "de",
              "value" : "Verabreichunsgsvorschrift für Medikamente"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "ROR",
          "display" : "Pharmacy prescription information",
          "definition" : "Pharmacy prescription information",
          "designation" : [
            {
              "language" : "de",
              "value" : "Medikamentenverordnung"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.2"
            }
          ]
        },
        {
          "code" : "SAL",
          "display" : "All schedule related information, including open slots, booked slots, blocked slots",
          "definition" : "All schedule related information, including open slots, booked slots, blocked slots",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "SBK",
          "display" : "Booked slots on the identified schedule",
          "definition" : "Booked slots on the identified schedule",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "SBL",
          "display" : "Blocked slots on the identified schedule",
          "definition" : "Blocked slots on the identified schedule",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "SOF",
          "display" : "First open slot on the identified schedule after the start date/time",
          "definition" : "First open slot on the identified schedule after the start date/time",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.4"
            }
          ]
        },
        {
          "code" : "SOP",
          "display" : "Open slots on the identified schedule between the begin and end of the start date/time range",
          "definition" : "Open slots on the identified schedule between the begin and end of the start date/time range",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "SSA",
          "display" : "Time slots available for a single appointment",
          "definition" : "Time slots available for a single appointment",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "SSR",
          "display" : "Time slots available for a recurring appointment",
          "definition" : "Time slots available for a recurring appointment",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "STA",
          "display" : "Status",
          "definition" : "Status",
          "designation" : [
            {
              "language" : "de",
              "value" : "Status"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.1"
            }
          ]
        },
        {
          "code" : "VXI",
          "display" : "Vaccine Information",
          "definition" : "Vaccine Information",
          "designation" : [
            {
              "language" : "de",
              "value" : "Impfinformation"
            }
          ],
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3"
            }
          ]
        },
        {
          "code" : "XID",
          "display" : "Get cross-referenced identifiers",
          "definition" : "Get cross-referenced identifiers",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.4"
            }
          ]
        }
      ]
    }