FHIR DevDays 2015 - introduction to FHIR

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GETTING STARTED WITH FHIR

INTERNATIONAL DEVDAYS 2015 – Beginners Track


Fast Relative – No technology can make integration as fast as we’d like

HealthcareInteroperabilityThat’s why we’re here

ResourcesBuilding blocks – more on these to follow

The Acronym


FHIR – DSTU2

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FHIR – Nightly build


F..H..I..Resources Have defined behaviour and meaning Are FHIR’s unit of exchange Known identity / location

Examples

Administrative: Patient, Location, Encounter, Organization, Episode

Clinical Concepts: AllergyIntolerance, Questionnaire, Observation

Devices: Metric, DeviceComponent

Scheduling: Appointment, Availability, Slot

Financial: Claim, Account, Coverage


Defined meaning

Let’s look at Resources in the spec….


(Complex) Datatypes


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Extensions

Yes, but where are: • citizenship• mothersmaidenname, • us-core-race

Don’t worry, you can add extensions: your own elements – FHIR even defines a few favorite ones!


The Case for Extensions

Simple choice design for absolutely everything Or go for “the 80%” and allow extensions

Everyone needs extensions, everyone hates them

Define, publish, find extensions Repository Documented just like resources Can be fetched & interpreted by clients


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Standard extensions


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Community Registry


Unit of Exchange(XML example)

<Patient xmlns="http://hl7.org/fhir"> <id value="patient1"/> <meta> <versionId value="v2"/> </meta> <text> <status value="generated"/> <div xmlns="http://www.w3.org/1999/xhtml"> <p>Henry Levin the 7th</p> </div> </text> <extension url="http://hl7.org/fhir/StructureDefinition/patient-birthTime"> <valueDateTime value="1932-09-24T14:35:45-05:00"/> </extension> <identifier> <use value="usual"/> <system value="http://acme.org/identifiers/mrn"/> <value value="12345"/> </identifier> <name> <family value="Levin"/> <given value="Henry"/> </name> <gender value="male"/> <birthDate value="1932-09-24"/> <managingOrganization> <reference value="Organization/123xyz"/> <display value="Good Health Clinic"/> </managingOrganization> <active value="true"/> </Patient>


A Resource’s identity

In fact: a URL

http://server.org/fhir/Patient/example

endpoint

resource type

logical id

Can even paste this in a browser!http://spark-dstu2.furore.com/fhir/Patient/example


Just a quick GETGET /fhir/Patient/1 HTTP/1.1

HTTP/1.1 200 OKContent-Type: application/xml+fhir;charset=utf-8Content-Length: 787Content-Location: http://spark.furore.com/fhir/Patient/1/_history/12Last-Modified: Tue, 29 May 2012 23:45:32 GMT

<?xml version="1.0" encoding="UTF-8"?><Patient xmlns="http://hl7.org/fhir"><identifier><label>SSN</label><identifier><system>http://hl7.org/fhir/sid/usssn</system><id>444222222</id></identifier></identifier><name><use>official</use><family>Everywoman</family><given>Eve</given></name><telecom><system>phone</system><value>555-555 2003</value><use>work</use></telecom><gender><system>http://hl7.org/fhir/sid/v2-0001</system><code>F</code></gender><birthDate>1973-05-31</birthDate><address><use>home</use><line>2222 Home Street</line></address><text><status>generated</status><div xmlns="http://www.w3.org/1999/xhtml">Everywoman, Eve. SSN:444222222</div></text></Patient>

UTF-8 encoded

HTTP Verb + path


Patient

Practitioner

Observation


Resource ReferenceExample: part of DiagnosticReport


It’s all about combining resources . . .

Patient

Practitioner

Observation

pat.registry.org/Patient/223

mpi.hospitalA.org/Practitioner/87

lab.hospitalA.org/DiagRep/4445

lab.hospitalA.org/Observation/3ff27

On the same lab system

Organizational MPI

National patient registry


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REST:“Repository” model of healthcare

Hospital System

POSTPatient

POSTOrder

Notify newLab results

UPDATEPatient

Lab System

POSTLab resultGET

Orders

FHIR server

ObservationPatient Observation

Observation

OrderOrder


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REST in the spec…


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Bundling resources

FHIR server

Obs

Lab System

PostLab resultQuery

Orders

Order OrderOrder

Practitioner Practitioner

Order

Obs

Obs

“searchset Bundle” “transaction Bundle”


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Bundle..is a resource!


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On the wire…

http://spark-dstu2.furore.com/fhir/Patient _format = xml, _format = json

Notice the <link> And then <entry>, <entry>, ….

http://spark-dstu2.furore.com/fhir/Patient

http://spark-dstu2.furore.com/fhir/Patient


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Summary

Read Search

FHIR server

ObservationPatient

Update

Order

DeleteCreate

Bundle

Resource

ElementsMetadata

Narrative

Extension

Data Types

HistoryTransaction


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Help!!


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The cast…

http://hl7.org/fhir/ http://hl7.org/fhir/resourcelist.html http://hl7.org/fhir/datatypes.html http://hl7.org/fhir/patient-extensions.html http://simplifier.net http://hl7.org/fhir/http.html http://hl7.org/fhir/bundle.html http://fhir.furore.com/cheatsheet

http://hl7.org/fhir/

http://hl7.org/fhir/

http://hl7.org/fhir/resourcelist.html

http://hl7.org/fhir/resourcelist.html

http://hl7.org/fhir/datatypes.html

http://hl7.org/fhir/datatypes.html

http://hl7.org/fhir/patient-extensions.html



http://simplifier.net/

http://hl7.org/fhir/http.html

http://hl7.org/fhir/http.html

http://hl7.org/fhir/bundle.html



http://fhir.furore.com/cheatsheet

http://fhir.furore.com/cheatsheet


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Questions?

Date post:	11-Apr-2017
Category:	Healthcare
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