The HL7 CIMI Workgroup: Creating Detailed Clinical Models ... · Development of reference patterns...
Transcript of The HL7 CIMI Workgroup: Creating Detailed Clinical Models ... · Development of reference patterns...
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The HL7 CIMI Workgroup: Creating Detailed Clinical Models to Support FHIR
HIMSS February 20, 2017 Orlando. Florida
Stanley M. Huff, MD
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Graphic of a Detailed Clinical Model
data 138 mmHg
SystolicBP SystolicBPObs
quals
data Right Arm
BodyLocation BodyLocation
data Sitting
PatientPosition PatientPosition SNOMED CT
LOINC or SNOMED Observable
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Heterogeneous Systems
Others…
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FHIR Profiles from CIMI models
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The path to interoperability
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• A set of modular components called “Resources” • Resources refer to each other using URLs
• Build a web to support healthcare process • Exchange resources between systems
• Using a RESTful API (e.g. web approach) • As a bundle of resources (messages,
documents)
What is HL7 FHIR©®?
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FHIR: Core Resources
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AdverseReaction Alert AllergyIntolerance CarePlan Composition ConceptMap Condition Conformance Device DeviceObservationReport DiagnosticOrder DiagnosticReport DocumentReference DocumentManifest Encounter FamilyHistory
Group ImagingStudy Immunization ImmunizationRecommendation List Location Media Medication MedicationAdministration MedicationDispense MedicationPrescription MedicationStatement MessageHeader Observation OperationOutcome Order
OrderResponse Organization Other Patient Practitioner Procedure Profile Provenance Query Questionnaire RelatedPerson SecurityEvent Specimen Substance Supply ValueSet
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Example: Fetch a systolic blood pressure GET https://open-api.fhir.me/Observation/8567?_format=json
{ "resourceType": "Observation", "text": { "status": "generated", "div": "<div>1999-07-02: Systolic blood pressure = 109 mm[Hg]</div>" }, "name": { "coding": [ { "system": "http://loinc.org", "code": "8480-6", "display": "Systolic blood pressure" } ] }, "valueQuantity": { "value": 109.0, "units": "mm[Hg]", "code": "mm[Hg]" }, "appliesDateTime": "1999-07-02", "status": "final", "subject": { "reference": "Patient/1186747" } }
Resource (unique) ID
Resource Type
Semantics
Clinical Values
URL to Patient
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Observation (DomainResource) identifier : Identifier [0..*]status : code [1..1]« ObservationStatus! » code : CodeableConcept [1..1] « LOINC ?? » subject : Reference [0..1]« Patient|Group|Device|Location » encounter : Reference [0..1] « Encounter » effective[x] : Type [0..1]« dateTime|Period » value[x] : Type [0..1]
« Quantity|CodeableConcept|string|Range|Ratio|SampledData| Attachment|time|dateTime|Period »
interpretation : CodeableConcept [0..1] « Observation Interpretation+ » method : CodeableConcept [0..1] « Observation Methods?? » specimen : Reference [0..1] « Specimen » device : Reference [0..1] « Device|DeviceMetric »
Observation Resource
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Observation subject <patient identifier> code (test code) from LOINC value <the result of the test>
Observation subject: Doe, John; #12345 code: 8480-6, Systolic BP value: 120 mmHg
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Profile for “Blood pressure”
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Observation = Blood Pressure Subject.reference: Patient URL Coding: LOINC 55284-4
Observation = Systolic BP name: “Systolic” coding: LOINC 8480-6 value.units: “mmHg”
Observation = Diastolic BP name: “Diastolic” coding: LOINC 8462-4 value.units: “mmHg”
Related:
type: has-component target.reference: Observation URL
type: has-component target.reference: Observation URL
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LOINC Codes for Blood Pressure
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• No true interoperability because • Vendors use different models/profiles • Government agencies use different
models/profiles • Provider organizations use different
models/profiles • Professional organizations use different
models/profiles
The danger
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® Health Level Seven and HL7 are registered trademarks of Health Level Seven International, registered with the United States Patent and Trademark Office.
• The Clinical Information Modeling Initiative (CIMI) is an HL7 Work Group that is producing detailed clinical information models to enable interoperability of health care information systems
• CIMI was initiated during a “Fresh Look” session at an HL7 meeting in 2011
• CIMI models are free for use for all purposes • See http://www.opencimi.org/ for more details
CIMI
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® Health Level Seven and HL7 are registered trademarks of Health Level Seven International, registered with the United States Patent and Trademark Office.
• Create a shared repository of detailed clinical information models
• Repository is open to everyone and models are licensed free for use at no cost
• Where the models: • Are expressed in an approved formalism
• Archetype Definition Language (ADL) • Archetype Modeling Language (AML)
• Are based on a core reference model, including a set of base data types
• Have formal bindings to standard coded terminologies
CIMI Goals
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FHIM
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The Interoperable App Development Process
Project Needs Pediatric Growth Chart Neonatal Bilirubin OPA Data Collection MQIP ACC registries Comm Acq Pneumonia Etc.
Create Logical Models (CIMI)
Approve Models
CIMI Model Repository
Create Physical
Artifacts (FHIR Profiles)
Artifact Repository
(FHIR profiles)
Conformance Testing
Terminology Server
(SOLOR)
Domain Analysis
Create Software
(Apps, CDS)
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• CIMI core principles • CIMI reference model
• Data types • Core constructor types – clusters, elements
• Reference patterns • 3,529 CIMI clinical laboratory models
CIMI Accomplishments
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• Development of reference patterns • Creation of CIMI detailed models
• Translation of 6,000+ Intermountain models • Development of new content
• Creation of FHIR profiles from CIMI models • Development of tools
• Model authoring, value set authoring, app development
• To Do • CIMI Profiles and Conformance Testing • Further refinement and use of AML • CIMI registry and adoption tables
Current Activities
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® Health Level Seven and HL7 are registered trademarks of Health Level Seven International, registered with the United States Patent and Trademark Office.
QUESTIONS?
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