HL7 v2.9 Vocabulary
0.2.0 - ci-build

HL7 v2.9 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 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.v29/ and changes regularly. See the Directory of published versions

## : Observation Sub-Type (2.9 - 1.1.0) - JSON Representation

Active as of 2026-03-13

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    {
      "resourceType" : "CodeSystem",
      "id" : "observationSubtype",
      "text" : {
        "status" : "generated",
        "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><ul><li>Include all codes defined in <a href=\"CodeSystem-observationSubtype.html\"><code>http://terminology.hl7.org/v2plusvocab/CodeSystem/observationSubtype</code></a></li></ul></div>"
      },
      "extension" : [
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
          "valueString" : "2.9"
        },
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
          "valueString" : "generate correct history somehow"
        },
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
          "valueString" : "0937"
        }
      ],
      "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/observationSubtype",
      "identifier" : [
        {
          "system" : "urn:ietf:rfc:3986",
          "value" : "urn:oid:2.16.840.1.113883.18.440"
        },
        {
          "system" : "urn:ietf:rfc:3986",
          "value" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0937"
        }
      ],
      "version" : "1.1.0",
      "name" : "ObservationSubtype",
      "title" : "Observation Sub-Type (2.9 - 1.1.0)",
      "status" : "active",
      "experimental" : true,
      "date" : "2026-03-13T11:11:50+00:00",
      "publisher" : "HL7/FO",
      "contact" : [
        {
          "name" : "HL7/FO",
          "telecom" : [
            {
              "system" : "url",
              "value" : "http://www.hl7.org"
            }
          ]
        }
      ],
      "description" : "HL7-defined code system of concepts specifying the observation sub-type.  Used in HL7 Version 2.x messaging in the OBX 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" : "AOE",
          "display" : "Ask at Order Entry",
          "definition" : "Ask at Order Entry",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Sub-type of QST (Question) - OBX-5 value is answer to an Ask at Order Entry question"
            },
            {
              "code" : "modified",
              "valueDateTime" : "2015-07-13"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.8.2"
            }
          ]
        },
        {
          "code" : "ASC",
          "display" : "Ask at Specimen Collection",
          "definition" : "Ask at Specimen Collection",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Sub-type of QST (Question)  - OBX-5 value is answer to an Ask at Specimen Collection question"
            },
            {
              "code" : "modified",
              "valueDateTime" : "2015-07-13"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.8.2"
            }
          ]
        },
        {
          "code" : "MCS",
          "display" : "Micro Culture Status",
          "definition" : "Sub-type of RSLT (Result) This term identifies observations that give overall culture outcome, when no specific organism is being named.",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Examples are: no growth, normal flora"
            },
            {
              "code" : "modified",
              "valueDateTime" : "2022-08-25"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.9"
            }
          ]
        },
        {
          "code" : "MID",
          "display" : "Micro Isolate Descriptor",
          "definition" : "Sub-type of RSLT (Result) This term identifies any other observations about the isolate.",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Examples: catalase positive, hemolytic, etc."
            },
            {
              "code" : "modified",
              "valueDateTime" : "2022-08-25"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.9"
            }
          ]
        },
        {
          "code" : "MIG",
          "display" : "Micro Isolate Growth Quantity",
          "definition" : "Sub-type of RSLT (Result) This term identifies growth levels of an isolate – can be numeric or categorical.",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Examples: <10,000 CFU, >100,00 CFU, Few, Moderate, Many, etc."
            },
            {
              "code" : "modified",
              "valueDateTime" : "2022-08-25"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.9"
            }
          ]
        },
        {
          "code" : "MIN",
          "display" : "Micro Isolate Name",
          "definition" : "Sub-type of RSLT (Result) This term identifies observations that name a specific organism either at the species or the genus level.",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Examples are: Genus Serratia, Neisseria meningitidis, Escherichia coli O157:H7, but also identification on a culture plate like presumptive Proteus species."
            },
            {
              "code" : "modified",
              "valueDateTime" : "2022-08-25"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.9"
            }
          ]
        },
        {
          "code" : "MIR",
          "display" : "Micro Isolate Related",
          "definition" : "Micro Isolate Related",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Sub-type of RSLT (Result) - qualifies the result as an isolate."
            },
            {
              "code" : "status",
              "valueCode" : "inactive"
            },
            {
              "code" : "modified",
              "valueDateTime" : "2017-12-05"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.8.2"
            }
          ]
        },
        {
          "code" : "MIRM",
          "display" : "Micro Isolate Related Modifier",
          "definition" : "Micro Isolate Related Modifier",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Sub-type of RSLT (Result) - result is a modifier of the isolate (e.g., Few, Some, etc.)"
            },
            {
              "code" : "status",
              "valueCode" : "inactive"
            },
            {
              "code" : "modified",
              "valueDateTime" : "2017-12-05"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.8.2"
            }
          ]
        },
        {
          "code" : "MNIR",
          "display" : "Micro Non-Isolate Related",
          "definition" : "Micro Non-Isolate Related",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Sub-type of RSLT (Result) - qualifies result as microbiology not related to any isolate (e.g., gram stain observations)"
            },
            {
              "code" : "status",
              "valueCode" : "inactive"
            },
            {
              "code" : "modified",
              "valueDateTime" : "2017-12-05"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.8.2"
            }
          ]
        },
        {
          "code" : "MOD",
          "display" : "Micro Other Descriptor",
          "definition" : "Sub-type of RSLT (Result) This term identifies observations that do not fit the culture status, but is not at the isolate level.",
          "property" : [
            {
              "code" : "modified",
              "valueDateTime" : "2022-08-25"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.9"
            }
          ]
        },
        {
          "code" : "MSS",
          "display" : "Micro Sample Stain",
          "definition" : "Sub-type of RSLT (Result) This term identifies observations on gram stains (and other stains or smears) on the clinical sample.",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Examples are: many gram positive rods, acid fast bacteria seen, etc."
            },
            {
              "code" : "modified",
              "valueDateTime" : "2017-12-05"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.9"
            }
          ]
        },
        {
          "code" : "SUP",
          "display" : "Supplemental Result",
          "definition" : "Supplemental Result",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Sub-type of RSLT (Result) - result coming over is additional material, for example points on a graph, an image, raw instrument data, links to related observations, etc."
            },
            {
              "code" : "modified",
              "valueDateTime" : "2015-07-13"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.8.2"
            }
          ]
        },
        {
          "code" : "SUR",
          "display" : "Susceptibility Related",
          "definition" : "Susceptibility Related",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Sub-type of RSLT (Result) - result value is for micro susceptibility/sensitivity"
            },
            {
              "code" : "modified",
              "valueDateTime" : "2015-07-13"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.8.2"
            }
          ]
        },
        {
          "code" : "UNSP",
          "display" : "Unspecified",
          "definition" : "Unspecified",
          "property" : [
            {
              "code" : "comment",
              "valueString" : "Sub-type of RSLT (Result) - result falls outside of the other sub-types."
            },
            {
              "code" : "modified",
              "valueDateTime" : "2015-07-13"
            },
            {
              "code" : "versionIntroduced",
              "valueString" : "2.8.2"
            }
          ]
        }
      ]
    }