# EBookings Appointment lastModified Extension - Magentus Practice Management FHIR Implementation Guide v1.2.60

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **EBookings Appointment lastModified Extension**

## Extension: EBookings Appointment lastModified Extension 

| | |
| :--- | :--- |
| *Official URL*:http://fhir.geniesolutions.io/StructureDefinition/ebookings-appointment-lastModified-ext | *Version*:1.2.60 |
| Active as of 2026-04-05 | *Computable Name*:EBookingsAppointmentLastModifiedExt |

The lastModified extension should be updated for every meaningful change to an appointment or its network of linked resource. This enables a hospital to subscribe to Appointment changes to pick up Appointment changes.

**Context of Use**

**Usage info**

**Usages:**

* Use this Extension: [EBookings Appointment Base](StructureDefinition-ebookings-appointment-base.md)
* Examples for this Extension: [Appointment/840fdd86-f273-4c56-89af-cc5dcda592ab](Appointment-840fdd86-f273-4c56-89af-cc5dcda592ab.md), [Bundle/1303a909-0849-4339-baf3-227d5ef8f33b](Bundle-1303a909-0849-4339-baf3-227d5ef8f33b.md) and [Bundle/BundleEBookingsSearchSet](Bundle-BundleEBookingsSearchSet.md)

You can also check for [usages in the FHIR IG Statistics](https://packages2.fhir.org/xig/geniesolutions.fhir|current/StructureDefinition/ebookings-appointment-lastModified-ext)

### 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-ebookings-appointment-lastModified-ext.csv), [Excel](StructureDefinition-ebookings-appointment-lastModified-ext.xlsx), [Schematron](StructureDefinition-ebookings-appointment-lastModified-ext.sch) 

#### Constraints



## Resource Content

```json
{
  "resourceType" : "StructureDefinition",
  "id" : "ebookings-appointment-lastModified-ext",
  "url" : "http://fhir.geniesolutions.io/StructureDefinition/ebookings-appointment-lastModified-ext",
  "version" : "1.2.60",
  "name" : "EBookingsAppointmentLastModifiedExt",
  "title" : "EBookings Appointment lastModified Extension",
  "status" : "active",
  "date" : "2026-04-05T21:47:41+00:00",
  "publisher" : "Magentus Practice Management",
  "contact" : [{
    "name" : "Magentus Practice Management",
    "telecom" : [{
      "system" : "url",
      "value" : "https://www.magentus.com/practice-management"
    },
    {
      "system" : "email",
      "value" : "andy.bond@magentus.com"
    }]
  },
  {
    "name" : "Magentus Practice Management",
    "telecom" : [{
      "system" : "url",
      "value" : "https://www.magentus.com/practice-management",
      "use" : "work"
    }]
  }],
  "description" : "The lastModified extension should be updated for every meaningful change to an appointment or its network of linked resource.  This enables a hospital to subscribe to Appointment changes to pick up Appointment changes.",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "urn:iso:std:iso:3166",
      "code" : "AU"
    }]
  }],
  "fhirVersion" : "4.0.1",
  "mapping" : [{
    "identity" : "rim",
    "uri" : "http://hl7.org/v3",
    "name" : "RIM Mapping"
  }],
  "kind" : "complex-type",
  "abstract" : false,
  "context" : [{
    "type" : "element",
    "expression" : "Appointment"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "id" : "Extension",
      "path" : "Extension",
      "short" : "EBookings Appointment lastModified Extension",
      "definition" : "The lastModified extension should be updated for every meaningful change to an appointment or its network of linked resource.  This enables a hospital to subscribe to Appointment changes to pick up Appointment changes."
    },
    {
      "id" : "Extension.extension",
      "path" : "Extension.extension",
      "max" : "0"
    },
    {
      "id" : "Extension.url",
      "path" : "Extension.url",
      "fixedUri" : "http://fhir.geniesolutions.io/StructureDefinition/ebookings-appointment-lastModified-ext"
    },
    {
      "id" : "Extension.value[x]",
      "path" : "Extension.value[x]",
      "slicing" : {
        "discriminator" : [{
          "type" : "type",
          "path" : "$this"
        }],
        "ordered" : false,
        "rules" : "open"
      },
      "min" : 1
    },
    {
      "id" : "Extension.value[x]:valueDateTime",
      "path" : "Extension.value[x]",
      "sliceName" : "valueDateTime",
      "short" : "Last Modified",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "dateTime"
      }],
      "mustSupport" : true
    }]
  }
}

```
