# Alert Level (2.8.1 - 1.0.0) - HL7 v2.8.1 Vocabulary v0.2.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Alert Level (2.8.1 - 1.0.0)**

## CodeSystem: Alert Level (2.8.1 - 1.0.0) (Experimental) 

| | |
| :--- | :--- |
| *Official URL*:http://terminology.hl7.org/v2plusvocab/CodeSystem/alertLevel | *Version*:1.0.0 |
| Active as of 2026-03-13 | *Computable Name*:AlertLevel |
| *Other Identifiers:*OID:2.16.840.1.113883.18.225, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0367 | |
| **Copyright/Legal**: HL7 Inc., 2026 | |

 
HL7-defined code system of concepts that identify the highest level of the alert state (e.g.,highest alert severity) that is associated with the indicated equipment (e.g. processing event, inventory event, QC event). Used in the Equipment Detail (EQU) and Notification Detail (NDS) segments in HL7 Version 2.x messaging. 

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

* [Hl7VSalertLevel](ValueSet-hl7VSalertLevel.md)



## Resource Content

```json
{
  "resourceType" : "CodeSystem",
  "id" : "alertLevel",
  "extension" : [{
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
    "valueString" : "2.8.1"
  },
  {
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
    "valueString" : "generate correct history somehow"
  },
  {
    "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
    "valueString" : "0367"
  }],
  "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/alertLevel",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.18.225"
  },
  {
    "system" : "urn:ietf:rfc:3986",
    "value" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/v2-0367"
  }],
  "version" : "1.0.0",
  "name" : "AlertLevel",
  "title" : "Alert Level (2.8.1 - 1.0.0)",
  "status" : "active",
  "experimental" : true,
  "date" : "2026-03-13T11:11:38+00:00",
  "publisher" : "HL7/FO",
  "contact" : [{
    "name" : "HL7/FO",
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org"
    }]
  }],
  "description" : "HL7-defined code system of concepts that identify the highest level of the alert state (e.g.,highest alert severity) that is associated with the indicated equipment (e.g. processing event, inventory event, QC event).  Used in the Equipment Detail (EQU) and Notification Detail (NDS) segments in HL7 Version 2.x messaging.",
  "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" : "C",
    "display" : "Critical",
    "definition" : "Critical",
    "property" : [{
      "code" : "usage",
      "valueString" : "Shut Down, Fix Problem and Re-init"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.4"
    }]
  },
  {
    "code" : "N",
    "display" : "Normal",
    "definition" : "Normal",
    "property" : [{
      "code" : "usage",
      "valueString" : "No Corrective Action Needed"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.4"
    }]
  },
  {
    "code" : "S",
    "display" : "Serious",
    "definition" : "Serious",
    "property" : [{
      "code" : "usage",
      "valueString" : "Corrective Action Required"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.4"
    }]
  },
  {
    "code" : "W",
    "display" : "Warning",
    "definition" : "Warning",
    "property" : [{
      "code" : "usage",
      "valueString" : "Corrective Action Anticipated"
    },
    {
      "code" : "versionIntroduced",
      "valueString" : "2.4"
    }]
  }]
}

```
