Bulk Data Access IG: STU1 Ballot #1
This page is part of the FHIR Bulk Data Access (Flat FHIR) (v0.1.0: STU 1 Ballot 1) based on FHIR R4. The current version which supercedes this version is 1.0.0. For a full list of available versions, see the Directory of published versions 
OPERATION: GroupLevelExport
The official URL for this operation definition is:
http://hl7.org/fhir/us/bulkdata/OperationDefinition/group-export
FHIR Operation to obtain data on all patients listed in a single FHIR Group Resource. If a FHIR server supports Group-level data export, it SHOULD support reading and searching for Group resource. This enables clients to discover available groups based on stable characteristics such as Group.identifier. Note: How these groups are defined is implementation specific for each FHIR system. For example, a payer may send a healthcare institution a roster file that can be imported into their EHR to create or update a FHIR group. Group membership could be based upon explicit attributes of the patient, such as: age, sex or a particular condition such as PTSD or Chronic Opioid use, or on more complex attributes, such as a recent inpatient discharge or membership in the population used to calculate a quality measure. FHIR-based group management is out of scope for the current version of this implementation guide
URL: [base]/Group/[id]/$$export
Parameters
| Use | Name | Cardinality | Type | Binding | Documentation |
| OUT | _outputFormat | 0..1 | string | The format for the requested bulk data files to be generated. Servers MUST support Newline Delimited JSON, but MAY choose to support additional output formats. Servers MUST accept the full content type of application/fhir+ndjson as well as the abbreviated representations application/ndjson and ndjson. Defaults to application/fhir+ndjson | |
| IN | _since | 0..1 | instant | Resources updated after this period will be included in the response | |
| OUT | _type | 0..1 | string | A string of comma-delimited FHIR resource types. Only resources of the specified resource types(s) SHOULD be included in the response. If this parameter is omitted, the server SHOULD return all supported resources within the scope of the client authorization. For non-system-level requests, the Patient Compartment SHOULD be used as a point of reference for recommended resources to be returned as well as other resources outside of the patient compartment that are helpful in interpreting the patient data such as Organization and Practitioner. Resource references MAY be relative URIs with the format <resource type>/<id>, or absolute URIs with the same structure rooted in the base URI for the server from which the export was performed. References will be resolved looking for a resource with the specified type and id within the file set. Note: Implementations MAY limit the resources returned to specific subsets of FHIR, such as those defined in the Argonaut Implementation Guide |