MedMij:V2017.04 FHIR LaboratoryResults

{{#customtitle:MedMij FHIR use case LaboratoryResults}}

Use case: retrieve laboratory results

Introduction

The retrieve laboratory results transaction is used by the PHR to retrieve a laboratory results from a XIS.

Actors

Transaction group	Transaction	Actor	Role
Retrieve Laboratory Results(PULL)	Retrieve laboratory results request	Patient (using a PHR)	Request laboratory results from the XIS
	Retrieve laboratory results response	Healthcare professional (using a XIS)	Serves laboratory results to the PHR

Invocations

PHR: request message

The request message represents an HTTP GET parameterized query from the PHR to the XIS.

Trigger Events

When the patient(PHR) wants to obtain allergy and intolerance information, it issues a retrieve laboratory results request message.

Message Semantics

Search

The PHR executes an HTTP GET conform to the FHIR RESTfull and search specification against the XIS's Observation endpoint. This search query URL is configurable by the PHE and has the following format.

GET [base]/Observation?[parameters]{&_format=[mime-type]}

Search Parameters

The PHR may supply, and the XIS shall be capable of processing, all query parameters listed below. These search parameters are a selection of the defined search parameters by the HL7 FHIR specification search parameters of Observation.

Observation
Name	Type	Description
date	date	Obtained date/time. If the obtained element is a period, a date that falls in the period

Example searches

1. GET https://vonk.test-nictiz.nl/Observation
2. GET https://vonk.test-nictiz.nl/Observation?date=ge2010-01-01&date=le2011-12-31 
2. GET https://vonk.test-nictiz.nl/Observation?include=Specimen:specimen&date=ge2010-01-01&date=le2011-12-31_include 

1. Retrieves all Observation resources (of the authorized MedMij patient).
2. Retrieves all Observation resources that have an effective date(/time) within a 2 year period.
3. Retrieves all Observation resources that have an effective date(/time) within a 2 year period and include Specimen information in the searchresults.

Expected Actions

The XIS shall process the query to discover Observation resources that match the search parameters given.

XIS: response message

The XIS returns a HTTP Status code appropriate to the processing as well as a FHIR Bundle including the matching observation information.

Trigger Events

The XIS completed processing of the retrieve laboratory results request message.

Message Semantics

Based on the query results, the XIS will either return an error or success. When the XIS needs to report an error, it SHALL use HTTP error response codes and SHOULD include a FHIR OperationOutcome resource with more details on the failure. If the request message is processed successfully, whether or not any observation resources are found, the HTTP status code SHALL be 200.

The response message shall be a Bundle resource of type "searchset" containing zero or more FHIR resources as entries. If the XIS is sending warnings, the Bundle resource SHALL also contain a FHIR OperationOutcome resource that contains those warnings. The FHIR specification describes the relevant sections:

• RESTful API framework
• Search errors
• Bundle resource
• OperationOutcome resource

Message resource content

The returned data to the PHR should conform to the profiles listed in the table below. This table shows the relevant ZIBs and their related profiles. The resources in the response message SHALL be a valid instance of these profiles. All resources SHALL include their related profile canonical URL in the meta.profile element in order to show compliance.

ZIB name NL	ZIB name EN	FHIR Resource	URL profile	Reference to section
Patient	Patient	Patient	http://fhir.nl/fhir/StructureDefinition/nl-core-patient	Patient
Zorgverlener	HealthProfessional	Practitioner	http://fhir.nl/fhir/StructureDefinition/nl-core-practitioner	HealthProfessional
Zorgaanbieder	HealthcareProvider	Organization	http://fhir.nl/fhir/StructureDefinition/nl-core-organization	HealthcareProvider
LaboratoriumUitslag	LaboratoryTestResult	Observation	http://nictiz.nl/fhir/StructureDefinition/zib-LaboratoryTestResult-Observation	LaboratoryTestResult
		Specimen	http://nictiz.nl/fhir/StructureDefinition/zib-LaboratoryTestResult-Specimen

Expected Actions

The PHR shall process the results according to application-defined rules. The PHR should be robust as the response may contain observation and specimen resources that match the query parameters.

Interactions, operations, search parameters

Interactions

The following logical interactions are needed for the retrieve medication overview transaction:

• Search

Operations

No operations are defined or needed for this transaction.

Search parameters

The following search parameter type needs to be supported for this transaction.

Search parameter types:

• date

Search result parameters:

• _include