# Change Type - Dermatology Image Annotation FHIR Implementation Guide v0.1.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **Change Type**

## CodeSystem: Change Type 

| | |
| :--- | :--- |
| *Official URL*:https://annotatemd.com/fhir/ig/CodeSystem/change-type | *Version*:0.1.0 |
| Active as of 2026-04-04 | *Computable Name*:ChangeType |

 
Types of changes detected between temporal annotation observations 

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

* [ChangeTypeValueSet](ValueSet-change-type.md)



## Resource Content

```json
{
  "resourceType" : "CodeSystem",
  "id" : "change-type",
  "url" : "https://annotatemd.com/fhir/ig/CodeSystem/change-type",
  "version" : "0.1.0",
  "name" : "ChangeType",
  "title" : "Change Type",
  "status" : "active",
  "experimental" : false,
  "date" : "2026-04-04T01:37:20+00:00",
  "publisher" : "Annotate MD",
  "contact" : [{
    "name" : "Annotate MD",
    "telecom" : [{
      "system" : "url",
      "value" : "https://annotatemd.com"
    },
    {
      "system" : "email",
      "value" : "fhir@annotatemd.com"
    }]
  }],
  "description" : "Types of changes detected between temporal annotation observations",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
      "code" : "001",
      "display" : "World"
    }]
  }],
  "caseSensitive" : true,
  "content" : "complete",
  "count" : 5,
  "concept" : [{
    "code" : "classification-changed",
    "display" : "Classification Changed",
    "definition" : "Lesion diagnosis changed between time points"
  },
  {
    "code" : "size-changed",
    "display" : "Size Changed",
    "definition" : "Lesion dimensions changed significantly"
  },
  {
    "code" : "new-finding",
    "display" : "New Finding",
    "definition" : "Lesion not present in prior annotation"
  },
  {
    "code" : "resolved",
    "display" : "Resolved",
    "definition" : "Lesion no longer visible at current time point"
  },
  {
    "code" : "unchanged",
    "display" : "Unchanged",
    "definition" : "No clinically significant change detected"
  }]
}

```
