# Diagnostic Service Section ID (2.5.1 - 1.4.0) - HL7 v2.5.1 Vocabulary v0.1.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Diagnostic Service Section ID (2.5.1 - 1.4.0)**

## CodeSystem: Diagnostic Service Section ID (2.5.1 - 1.4.0) (Experimental) 

| | |
| :--- | :--- |
| *Official URL*:http://terminology.hl7.org/v2plusvocab/CodeSystem/diagnosticServiceSectionId | *Version*:1.4.0 |
| Active as of 2026-01-27 | *Computable Name*:DiagnosticServiceSectionId |
| *Other Identifiers:*OID:2.16.840.1.113883.18.29 | |
| **Copyright/Legal**: HL7 Inc., 2026 | |

 
HL7-defined code system of concepts which specify a section of a diagnostic service where the observation may be performed. Used in HL7 Version 2.x messaging in the OBR and OM4 segments. 

 This Code system is referenced in the content logical definition of the following value sets: 

* [Hl7VSdiagnosticServiceSectionId](ValueSet-hl7VSdiagnosticServiceSectionId.md)



## Resource Content

```json
{
  "resourceType" : "CodeSystem",
  "id" : "diagnosticServiceSectionId",
  "extension" : [
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
      "valueString" : "2.5.1"
    },
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
      "valueString" : "generate correct history somehow"
    },
    {
      "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
      "valueString" : "0074"
    }
  ],
  "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/diagnosticServiceSectionId",
  "identifier" : [
    {
      "system" : "urn:ietf:rfc:3986",
      "value" : "urn:oid:2.16.840.1.113883.18.29"
    }
  ],
  "version" : "1.4.0",
  "name" : "DiagnosticServiceSectionId",
  "title" : "Diagnostic Service Section ID (2.5.1 - 1.4.0)",
  "status" : "active",
  "experimental" : true,
  "date" : "2026-01-27T19:29:18+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 a section of a diagnostic service where the observation may be performed.  Used in HL7 Version 2.x messaging in the OBR and OM4 segments.",
  "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" : "AU",
      "display" : "Audiology",
      "definition" : "Audiology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Audiologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "BG",
      "display" : "Blood Gases",
      "definition" : "Blood Gases",
      "designation" : [
        {
          "language" : "de",
          "value" : "Blutgase"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "BLB",
      "display" : "Blood Bank",
      "definition" : "Blood Bank",
      "designation" : [
        {
          "language" : "de",
          "value" : "Blutbank"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "CH",
      "display" : "Chemistry",
      "definition" : "Chemistry",
      "designation" : [
        {
          "language" : "de",
          "value" : "Klinische Chemie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "CP",
      "display" : "Cytopathology",
      "definition" : "Cytopathology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Zellpathologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "CT",
      "display" : "CAT Scan",
      "definition" : "CAT Scan",
      "designation" : [
        {
          "language" : "de",
          "value" : "Computertomographie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "CTH",
      "display" : "Cardiac Catheterization",
      "definition" : "Cardiac Catheterization",
      "designation" : [
        {
          "language" : "de",
          "value" : "Herzkatheter"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "CUS",
      "display" : "Cardiac Ultrasound",
      "definition" : "Cardiac Ultrasound",
      "designation" : [
        {
          "language" : "de",
          "value" : "Kardiologische Ultraschalluntersuchung"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "EC",
      "display" : "Electrocardiac",
      "definition" : "Electrocardiac (e.g., EKG, EEC, Holter)",
      "designation" : [
        {
          "language" : "de",
          "value" : "Elektrokardiographie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "EN",
      "display" : "Electroneuro",
      "definition" : "Electroneuro (EEG, EMG, EP, PSG)",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "HM",
      "display" : "Hematology",
      "definition" : "Hematology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Hämatologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "ICU",
      "display" : "Bedside ICU Monitoring",
      "definition" : "Bedside ICU Monitoring",
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "IMG",
      "display" : "Diagnostic Imaging",
      "definition" : "Diagnostic Imaging",
      "property" : [
        {
          "code" : "status",
          "valueCode" : "inactive"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2024-12-30"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.4"
        }
      ]
    },
    {
      "code" : "IMM",
      "display" : "Immunology",
      "definition" : "Immunology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Immunologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "LAB",
      "display" : "Laboratory",
      "definition" : "Laboratory",
      "designation" : [
        {
          "language" : "de",
          "value" : "Labor"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "MB",
      "display" : "Microbiology",
      "definition" : "Microbiology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Mikrobiologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "MCB",
      "display" : "Mycobacteriology",
      "definition" : "Mycobacteriology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Mykobakteriologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "MYC",
      "display" : "Mycology",
      "definition" : "Mycology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Mykologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "NMR",
      "display" : "Nuclear Magnetic Resonance",
      "definition" : "Nuclear Magnetic Resonance",
      "designation" : [
        {
          "language" : "de",
          "value" : "Kernspintomographie (MR)"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "NMS",
      "display" : "Nuclear Medicine Scan",
      "definition" : "Nuclear Medicine Scan",
      "designation" : [
        {
          "language" : "de",
          "value" : "Szintigramm"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "NRS",
      "display" : "Nursing Service Measures",
      "definition" : "Nursing Service Measures",
      "designation" : [
        {
          "language" : "de",
          "value" : "Pflegemaßnahme"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "OSL",
      "display" : "Outside Lab",
      "definition" : "Outside Lab",
      "designation" : [
        {
          "language" : "de",
          "value" : "Externes Labor"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "OT",
      "display" : "Occupational Therapy",
      "definition" : "Occupational Therapy",
      "designation" : [
        {
          "language" : "de",
          "value" : "Beschäftigungstherapie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "OTH",
      "display" : "Other",
      "definition" : "Other",
      "designation" : [
        {
          "language" : "de",
          "value" : "Andere"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "OUS",
      "display" : "OB Ultrasound",
      "definition" : "OB Ultrasound",
      "designation" : [
        {
          "language" : "de",
          "value" : "Geburtshilfiche Ultraschalluntersuchung"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "PAR",
      "display" : "Parasitology",
      "property" : [
        {
          "code" : "status",
          "valueCode" : "inactive"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2024-12-30"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.4"
        }
      ]
    },
    {
      "code" : "PAT",
      "display" : "Pathology (gross & histopath, not surgical)",
      "property" : [
        {
          "code" : "status",
          "valueCode" : "inactive"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2024-12-30"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.4"
        }
      ]
    },
    {
      "code" : "PF",
      "display" : "Pulmonary Function",
      "definition" : "Pulmonary Function",
      "designation" : [
        {
          "language" : "de",
          "value" : "Lungenfunktion"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "PHR",
      "display" : "Pharmacy",
      "definition" : "Pharmacy",
      "designation" : [
        {
          "language" : "de",
          "value" : "Apotheke"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "PHY",
      "display" : "Physician",
      "definition" : "Physician (Hx. Dx, admission note, etc.)",
      "designation" : [
        {
          "language" : "de",
          "value" : "Arzt (Krankengeschichte, Diagnose, Aufnahmeuntersuchung)"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "PT",
      "display" : "Physical Therapy",
      "definition" : "Physical Therapy",
      "designation" : [
        {
          "language" : "de",
          "value" : "physiklische Therapie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "RAD",
      "display" : "Radiology",
      "definition" : "Radiology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Radiologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.3"
        }
      ]
    },
    {
      "code" : "RC",
      "display" : "Respiratory Care (therapy)",
      "definition" : "Respiratory Care (therapy)",
      "designation" : [
        {
          "language" : "de",
          "value" : "Atemtherapie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "RT",
      "display" : "Radiation Therapy",
      "definition" : "Radiation Therapy",
      "designation" : [
        {
          "language" : "de",
          "value" : "Strahlentherapie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "RUS",
      "display" : "Radiology Ultrasound",
      "definition" : "Radiology Ultrasound",
      "designation" : [
        {
          "language" : "de",
          "value" : "Radiologische Ultraschalluntersuchung"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "RX",
      "display" : "Radiograph",
      "definition" : "Radiograph",
      "designation" : [
        {
          "language" : "de",
          "value" : "Röntgenaufnahme"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "SP",
      "display" : "Surgical Pathology",
      "definition" : "Surgical Pathology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Operative Pathologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "SR",
      "display" : "Serology",
      "definition" : "Serology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Serologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "TX",
      "display" : "Toxicology",
      "definition" : "Toxicology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Toxikologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "URN",
      "display" : "Urinalysis",
      "property" : [
        {
          "code" : "status",
          "valueCode" : "inactive"
        },
        {
          "code" : "modified",
          "valueDateTime" : "2024-12-30"
        },
        {
          "code" : "versionIntroduced",
          "valueString" : "2.4"
        }
      ]
    },
    {
      "code" : "VR",
      "display" : "Virology",
      "definition" : "Virology",
      "designation" : [
        {
          "language" : "de",
          "value" : "Virologie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.2"
        }
      ]
    },
    {
      "code" : "VUS",
      "display" : "Vascular Ultrasound",
      "definition" : "Vascular Ultrasound",
      "designation" : [
        {
          "language" : "de",
          "value" : "Ultraschalluntersuchung der Gefäße"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    },
    {
      "code" : "XRC",
      "display" : "Cineradiograph",
      "definition" : "Cineradiograph",
      "designation" : [
        {
          "language" : "de",
          "value" : "Röntgenkinematographie"
        }
      ],
      "property" : [
        {
          "code" : "versionIntroduced",
          "valueString" : "2.1"
        }
      ]
    }
  ]
}

```
