FHIR DevDays 2015 - introduction to FHIR

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

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

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

Standard extensions

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

REST:“Repository” model of healthcare

Hospital System

POSTPatient

POSTOrder

Notify newLab results

UPDATEPatient

Lab System

POSTLab resultGET

Orders

FHIR server

ObservationPatient Observation

Observation

OrderOrder

REST in the spec…

Bundling resources

FHIR server

Lab System

PostLab resultQuery

Orders

Order OrderOrder

Practitioner Practitioner

“searchset Bundle” “transaction Bundle”

Bundle..is a resource!

On the wire…

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

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

Summary

Read Search

FHIR server

ObservationPatient

Update

DeleteCreate

Bundle

Resource

ElementsMetadata

Narrative

Extension

Data Types

HistoryTransaction

Help!!

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

Questions?

FHIR DevDays 2015 - introduction to FHIR

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