# Immunization Diluent - Aotearoa Immunisation Register (AIR) FHIR Implementation Guide (API-V1) v1.27.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Immunization Diluent**

## Extension: Immunization Diluent 

| | |
| :--- | :--- |
| *Official URL*:https://standards.digital.health.nz/fhir/air/StructureDefinition/air-diluent | *Version*:1.27.0 |
| Active as of 2026-08-05 | *Computable Name*:AIRDiluent |

Immunization Diluent

**Context of Use**

**Usage info**

**Usages:**

* Use this Extension: [AIR Immunization](StructureDefinition-air-immunization.md)
* Examples for this Extension: [Bundle/72178030](Bundle-72178030.md), [Bundle/82020190](Bundle-82020190.md), [Bundle/AIRBundleCarePlanExample](Bundle-AIRBundleCarePlanExample.md), [Bundle/AIRBundleOrchestrationExample](Bundle-AIRBundleOrchestrationExample.md) and [Immunization/imm-example-2](Immunization-imm-example-2.md)

You can also check for [usages in the FHIR IG Statistics](https://packages2.fhir.org/xig/resource/AIR-ig|current/StructureDefinition/StructureDefinition-air-diluent.json)

### Formal Views of Extension Content

 [Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work](http://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#structure-definitions). 

 

Other representations of profile: [CSV](StructureDefinition-air-diluent.csv), [Excel](StructureDefinition-air-diluent.xlsx), [Schematron](StructureDefinition-air-diluent.sch) 

#### Constraints



## Resource Content

```json
{
  "resourceType" : "StructureDefinition",
  "id" : "air-diluent",
  "url" : "https://standards.digital.health.nz/fhir/air/StructureDefinition/air-diluent",
  "version" : "1.27.0",
  "name" : "AIRDiluent",
  "title" : "Immunization Diluent",
  "status" : "active",
  "date" : "2026-08-05T01:54:22+00:00",
  "publisher" : "Te Whatu Ora",
  "contact" : [{
    "name" : "Te Whatu Ora",
    "telecom" : [{
      "system" : "url",
      "value" : "https://tewhatuora.govt.nz"
    }]
  }],
  "description" : "Immunization Diluent",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "urn:iso:std:iso:3166",
      "code" : "US",
      "display" : "New Zealand"
    }]
  }],
  "fhirVersion" : "4.0.1",
  "mapping" : [{
    "identity" : "rim",
    "uri" : "http://hl7.org/v3",
    "name" : "RIM Mapping"
  }],
  "kind" : "complex-type",
  "abstract" : false,
  "context" : [{
    "type" : "element",
    "expression" : "Immunization"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "id" : "Extension",
      "path" : "Extension",
      "short" : "Immunization Diluent",
      "definition" : "Immunization Diluent"
    },
    {
      "id" : "Extension.extension:diluentLotNumber",
      "path" : "Extension.extension",
      "sliceName" : "diluentLotNumber",
      "min" : 0,
      "max" : "1"
    },
    {
      "id" : "Extension.extension:diluentLotNumber.extension",
      "path" : "Extension.extension.extension",
      "max" : "0"
    },
    {
      "id" : "Extension.extension:diluentLotNumber.url",
      "path" : "Extension.extension.url",
      "fixedUri" : "diluentLotNumber"
    },
    {
      "id" : "Extension.extension:diluentLotNumber.value[x]",
      "path" : "Extension.extension.value[x]",
      "type" : [{
        "code" : "string"
      }]
    },
    {
      "id" : "Extension.extension:diluentExpiryDate",
      "path" : "Extension.extension",
      "sliceName" : "diluentExpiryDate",
      "min" : 0,
      "max" : "1"
    },
    {
      "id" : "Extension.extension:diluentExpiryDate.extension",
      "path" : "Extension.extension.extension",
      "max" : "0"
    },
    {
      "id" : "Extension.extension:diluentExpiryDate.url",
      "path" : "Extension.extension.url",
      "fixedUri" : "diluentExpiryDate"
    },
    {
      "id" : "Extension.extension:diluentExpiryDate.value[x]",
      "path" : "Extension.extension.value[x]",
      "type" : [{
        "code" : "date"
      }]
    },
    {
      "id" : "Extension.url",
      "path" : "Extension.url",
      "fixedUri" : "https://standards.digital.health.nz/fhir/air/StructureDefinition/air-diluent"
    },
    {
      "id" : "Extension.value[x]",
      "path" : "Extension.value[x]",
      "max" : "0"
    }]
  }
}

```
