# DARTS Home Page - De-Identification, Anonymization, Redaction Toolkit Services v1.0.0-ballot

* [**Table of Contents**](toc.md)
* **DARTS Home Page**

## DARTS Home Page

| | | |
| :--- | :--- | :--- |
| *Official URL*:http://hl7.org/fhir/us/darts/ImplementationGuide/hl7.fhir.us.darts | *Version*:1.0.0-ballot | |
| * IG Standards status: *[Trial-use](http://hl7.org/fhir/R4/versions.html#std-process) | [Maturity Level](http://hl7.org/fhir/versions.html#maturity): 2 | *Computable Name*:DARTS |

### Introduction

 The health care industry has embraced FHIR as the standard for data exchange and has been implementing FHIR in real-world settings as part of the various accelerators such as Argonaut, DaVinci, and Helios. The adoption of FHIR has been further accelerated by the Office of the National Coordinator for Health Information Technology (ONC) and Centers for Medicare and Medicaid Services (CMS) regulations that require the implementation of FHIR for multiple use cases. One of the competing requirements that is emerging in the industry is the need for data that does not contain protected health information (PHI) or personally identifiable information (PII). These requirements are common among federal reporting use cases such as Health Resources and Services Administration (HRSA) reporting programs, public health reporting to Centers for Disease Control and Prevention (CDC), data needs for training artificial intelligence (AI) models, analyzing data for impact and research programs. This implementation guide creates a set of services that can de-identify, anonymize, and redact data represented by United States Core Data for Interoperability (USCDI) resources based on a policy identifier. 

 This implementation guide (IG) defines the specifications by which federal agencies such as HRSA, Substance Abuse and Mental Health Administration (SAMHSA), and others can receive line level de-identified information and can publish anonymized datasets. The IG specifies services to 
* **Pseudonymize patient data**
* **De-identify patient data based on a policy identifier**
* **Anonymize health care datasets using specific techniques**
 

 The main sections of this IG are: 

*  [Background](background.md) - The page provides an introduction and definitions for de-identification, pseudonymization, and anonymization. 
*  [Use Cases](usecases.md) - Defines the use case, workflows. actors and systems that will be used as part of the IG. 
*  [Formal Specification](spec.md) - Defines the formal specification in terms of requirements that need to be implemented by a service provider. 
*  [FHIR Artifacts](artifacts.md) - Defines the FHIR artifacts for the IG. 
*  [Downloads](downloads.md) - Allows downloading a copy of this implementation guide and other useful information 

### Relationship to other Implementation Guides

 This section elaborates on the relationship of this IG to other implementation guides. 

#### Relationship to the US Core Implementation Guide

 This implementation guide, leverages terminology from US Core, and also uses US Core profiles to specify the inputs to the DARTS services. The outputs of DARTS services will be represented using profiles specified in the DAPL IG. 

#### Relationship to the De-identified, Anonymized FHIR Profiles Library (DAPL) Implementation Guide

 This DARTS IG defines the services that implement techniques and algorithms for de-identification and anonymization, whereas the DAPL IG defines the set of profiles to represent the de-identified and anonymized information. The IGs are complementary. The following is a diagram that shows the relationship between US Core, DARTS IG, and DAPL IG. 

The following is a diagram that shows the relationship between US Core, DARTS IG and DAPL IG.

#### Relationship to Data Segmentation for Privacy (DS4P) Implementation Guide

 The DS4P IG provides guidance for applying security labels in FHIR that can be used to protect the privacy of patients' data. The DARTS IG, on the other hand aims to remove PHI/PII from the data and hence will not be using the DS4P tags currently. 



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        "valueString" : "Patient/patient-08"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Patient/patient-09"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Patient/patient-10"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-01"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-02"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-03"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-04"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-05"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-06"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-07"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-08"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-09"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "no-narrative"
      },
      {
        "url" : "value",
        "valueString" : "Condition/condition-10"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "copyrightyear"
      },
      {
        "url" : "value",
        "valueString" : "2026+"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "releaselabel"
      },
      {
        "url" : "value",
        "valueString" : "STU 1 Ballot"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "path-expansion-params"
      },
      {
        "url" : "value",
        "valueString" : "terminology-settings.json"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "autoload-resources"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "path-liquid"
      },
      {
        "url" : "value",
        "valueString" : "template/liquid"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "path-liquid"
      },
      {
        "url" : "value",
        "valueString" : "input/liquid"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "path-qa"
      },
      {
        "url" : "value",
        "valueString" : "temp/qa"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "path-temp"
      },
      {
        "url" : "value",
        "valueString" : "temp/pages"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "path-output"
      },
      {
        "url" : "value",
        "valueString" : "output"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "path-suppressed-warnings"
      },
      {
        "url" : "value",
        "valueString" : "input/ignoreWarnings.txt"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "path-history"
      },
      {
        "url" : "value",
        "valueString" : "http://hl7.org/fhir/us/darts/history.html"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "template-html"
      },
      {
        "url" : "value",
        "valueString" : "template-page.html"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "template-md"
      },
      {
        "url" : "value",
        "valueString" : "template-page-md.html"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "apply-contact"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "apply-context"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "apply-copyright"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "apply-jurisdiction"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "apply-license"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "apply-publisher"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "apply-version"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "apply-wg"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "active-tables"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "fmm-definition"
      },
      {
        "url" : "value",
        "valueString" : "http://hl7.org/fhir/versions.html#maturity"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "propagate-status"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "excludelogbinaryformat"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    },
    {
      "extension" : [{
        "url" : "code",
        "valueCode" : "tabbed-snapshots"
      },
      {
        "url" : "value",
        "valueString" : "true"
      }],
      "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-parameter"
    }],
    "resource" : [{
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "Parameters"
      }],
      "reference" : {
        "reference" : "Parameters/de-identify-data-operation-urls-example"
      },
      "name" : "Parameters Example to pass File Urls to De-Identify and Anonymize operation",
      "description" : "An Example of a conformant Parameters resource that can be passed to De-Identify and Anonymize operation.",
      "exampleBoolean" : true
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "Bundle"
      }],
      "reference" : {
        "reference" : "Bundle/bundle-with-identifiable-date"
      },
      "name" : "Bundle Example containing identifiable data",
      "description" : "An Example of a Bundle containing identifiable data in US Core resources.",
      "exampleBoolean" : true
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "Bundle"
      }],
      "reference" : {
        "reference" : "Bundle/bundle-with-psuedonymized-date"
      },
      "name" : "Bundle Example containing psuedonymized data",
      "description" : "An Example of a Bundle containing psuedonymized data.",
      "exampleBoolean" : true
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "Bundle"
      }],
      "reference" : {
        "reference" : "Bundle/dapl-deidentified-bundle"
      },
      "name" : "Bundle Example containing de-identified data using DAPL profiles",
      "description" : "An Example of a Bundle containing de-identified data using DAPL profiles.",
      "exampleBoolean" : true
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "CapabilityStatement"
      }],
      "reference" : {
        "reference" : "CapabilityStatement/darts-service-provider"
      },
      "name" : "DARTS Service Provider CapabilityStatement",
      "description" : "This is a CapabilityStatement that defines the expected capabilities of the DARTS Service Provider."
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "CodeSystem"
      }],
      "reference" : {
        "reference" : "CodeSystem/darts-policy-identifiers"
      },
      "name" : "DARTS Policy Identifiers",
      "description" : "The DARTS Policy Identifiers CodeSystem contains a set  of codes that will be used for DARTS services to indicate the de-identification policies."
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "StructureDefinition:resource"
      }],
      "reference" : {
        "reference" : "StructureDefinition/darts-operation-data-urls-parameter"
      },
      "name" : "DARTS Operation Data Urls Parameter",
      "description" : "The DARTS profile is based on the **Parameters FHIR Resource and establishes the core elements, extensions, vocabularies and value sets for representing the data for sending input and receiving output for the DARTS psuedonymize, de-identify and anonymize operations."
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "OperationDefinition"
      }],
      "reference" : {
        "reference" : "OperationDefinition/anonymize"
      },
      "name" : "Generate Anonymized data",
      "description" : "Generates anonymized data from identifiable data. The algorithm to be used for anonymization is left to the DARTS service provider. Errors during the execution of the operation can be returned as OperationOutcome per the FHIR spec as a return parameter."
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "OperationDefinition"
      }],
      "reference" : {
        "reference" : "OperationDefinition/de-identify"
      },
      "name" : "Generate De-identified data",
      "description" : "Generates de-identified  data from identifiable data. The de-identification algorithm to be used is specified using the policy identifier. Errors during the execution of the operation can be returned as OperationOutcome per the FHIR spec as a return parameter."
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "OperationDefinition"
      }],
      "reference" : {
        "reference" : "OperationDefinition/psuedonymize"
      },
      "name" : "Generate Psuedonymized data",
      "description" : "Generates psuedonymized data from identifiable data. The algorithm to be used for psuedonymization is left to the DARTS service provider. Errors during the execution of the operation can be returned as OperationOutcome per the FHIR spec as a return parameter."
    },
    {
      "extension" : [{
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/resource-information",
        "valueString" : "ValueSet"
      }],
      "reference" : {
        "reference" : "ValueSet/darts-policy-identifier-codes"
      },
      "name" : "DARTS Policy Identifer Codes",
      "description" : "The DARTS Policy Identifier codes valueset defines identifier(s) that are used to specify the type of policy to apply for de-identification of data."
    }],
    "page" : {
      "extension" : [{
        "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
        "valueCode" : "trial-use"
      },
      {
        "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
        "valueUrl" : "toc.html"
      }],
      "nameUrl" : "toc.html",
      "title" : "Table of Contents",
      "generation" : "html",
      "page" : [{
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "index.html"
        }],
        "nameUrl" : "index.html",
        "title" : "DARTS Home Page",
        "generation" : "html"
      },
      {
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "background.html"
        }],
        "nameUrl" : "background.html",
        "title" : "Background",
        "generation" : "markdown"
      },
      {
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "spec.html"
        }],
        "nameUrl" : "spec.html",
        "title" : "DARTS Services Specification",
        "generation" : "markdown"
      },
      {
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "usecases.html"
        }],
        "nameUrl" : "usecases.html",
        "title" : "Use Cases and Workflows",
        "generation" : "markdown"
      },
      {
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "changes.html"
        }],
        "nameUrl" : "changes.html",
        "title" : "Change History",
        "generation" : "markdown"
      },
      {
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "downloads.html"
        }],
        "nameUrl" : "downloads.html",
        "title" : "Useful Downloads",
        "generation" : "html"
      },
      {
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "credits.html"
        }],
        "nameUrl" : "credits.html",
        "title" : "Credits",
        "generation" : "markdown"
      },
      {
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "license.html"
        }],
        "nameUrl" : "license.html",
        "title" : "License",
        "generation" : "markdown"
      },
      {
        "extension" : [{
          "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
          "valueCode" : "trial-use"
        },
        {
          "url" : "http://hl7.org/fhir/tools/StructureDefinition/ig-page-name",
          "valueUrl" : "implementation.html"
        }],
        "nameUrl" : "implementation.html",
        "title" : "implementation",
        "generation" : "markdown"
      }]
    },
    "parameter" : [{
      "code" : "path-resource",
      "value" : "input/capabilities"
    },
    {
      "code" : "path-resource",
      "value" : "input/examples"
    },
    {
      "code" : "path-resource",
      "value" : "input/extensions"
    },
    {
      "code" : "path-resource",
      "value" : "input/models"
    },
    {
      "code" : "path-resource",
      "value" : "input/operations"
    },
    {
      "code" : "path-resource",
      "value" : "input/profiles"
    },
    {
      "code" : "path-resource",
      "value" : "input/resources"
    },
    {
      "code" : "path-resource",
      "value" : "input/vocabulary"
    },
    {
      "code" : "path-resource",
      "value" : "input/maps"
    },
    {
      "code" : "path-resource",
      "value" : "input/testing"
    },
    {
      "code" : "path-resource",
      "value" : "input/history"
    },
    {
      "code" : "path-resource",
      "value" : "fsh-generated/resources"
    },
    {
      "code" : "path-pages",
      "value" : "template/config"
    },
    {
      "code" : "path-pages",
      "value" : "input/images"
    },
    {
      "code" : "path-tx-cache",
      "value" : "input-cache/txcache"
    }]
  }
}

```
