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1
Ramathibodi Hospital’s
Experience with
HL7 & HL7 CDA Standards
Nawanan Theera-Ampornpunt, M.D., Ph.D.
Informatics Division, Faculty of Medicine Ramathibodi Hospital
Certified HL7 CDA Specialist
2
A Bit About Myself...
2003 M.D. (First-Class Honors) (Ramathibodi)
2009 M.S. in Health Informatics (U of MN)
2011 Ph.D. in Health Informatics (U of MN)
2012 Certified HL7 CDA Specialist
Former Deputy Chief, Informatics Division
Deputy Executive Director for Informatics,
Chakri Naruebodindra Medical Institute
Faculty of Medicine Ramathibodi Hospital
nawanan.the@mahidol.ac.th
3
Outline
• A Vision
• HL7 & HL7 CDA Standards
• Ramathibodi’s Experience
Acknowledgments
• Some of these slides are reproduced/adapted
from those of Dr. Supachai Parchariyanon,
Miss Sireerat Srisiriratanakul, and Mr.
Chaiwiwat Thongtaveechaikit at
Ramathibodi
4
A VISION FOR
HEALTH CARE
5
eHealth
Health Information Exchange (HIE)
Hospital A Hospital B
Clinic C
Government
Lab Patient at Home
6
Standards: Why?
• The Large N Problem
N = 2, Interface = 1
# Interfaces = N(N-1)/2
N = 3, Interface = 3
N = 5, Interface = 10
N = 100, Interface = 4,950
7
eHealth
Health Information Exchange (HIE)
Hospital A Hospital B
Clinic C
Government
Lab Patient at Home
8
Objectives
• Interoperability
• Inter-operable
systems
Ultimate Goals
• Continuity of Care
• Quality
 Safety
 Timeliness
 Effectiveness
 Equity
 Patient-Centeredness
 Efficiency
Why Health Information Standards?
9
Levels of Interoperability
Functional
Semantic
Syntactic
10
Various Kinds of Standards
in Health Care
• Unique Identifiers
• Standard Data Sets
• Vocabularies & Terminologies
• Exchange Standards
– Message Exchange
– Document Exchange
• Functional Standards
• Technical Standards: Data Communications,
Encryption, Security
11
Functional
Semantic
Syntactic
How Standards Support Interoperability
Technical Standards
(TCP/IP, encryption,
security)
Exchange Standards (HL7 v.2,
HL7 v.3 Messaging, HL7 CDA,
DICOM)
Vocabularies, Terminologies,
Coding Systems (ICD-10, ICD-9,
CPT, SNOMED CT, LOINC)
Information Models (HL7 v.3 RIM,
ASTM CCR, HL7 CCD)
Standard Data Sets
Functional Standards (HL7 EHR
Functional Specifications)
Some may be hybrid: e.g. HL7 v.3, HL7 CCD
Unique ID
12
Message Exchange
• Goal: Specify format
for exchange of data
• Internal vs. external
messages
• Examples
 HL7 v.2
 HL7 v.3 Messaging
 DICOM
 NCPDP
Document Exchange
• Goal: Specify format
for exchange of
“documents”
• Examples
 HL7 v.3 Clinical Document
Architecture (CDA)
 ASTM Continuity of Care
Record (CCR)
 HL7 Continuity of Care
Document (CCD)
Exchange Standards
13
Messages
• Human Unreadable
• Machine Processable
Clinical Documents
• Human Readable
• (Ideally) Machine
Processable
Exchange Standards
14
Hospital A Hospital B
Clinic C
Government
Lab Patient at Home
Message Exchange
Message
Message
Message
Message
Message
15
Hospital A Hospital B
Clinic C
Government
Lab Patient at Home
Clinical Document Exchange
Message containing
Referral Letter
Message containing
Claims Request
Message containing
Lab Report
Message containing
Patient Visit Summary
Message containing
Communicable
Disease Report
16
HL7 & HL7 CDA
STANDARDS
17
HL7 Standards
• HL7 V2.x
– Defines electronic messages supporting hospital
operations
• HL7 V3
• HL7 Clinical Document Architecture
(CDA) Releases 1 and 2
• HL7 Arden Syntax
– Representation of medical knowledge
• HL7 EHR & PHR Functional Specifications
• Etc.
18
HL7 V3 Standards
• A family of standards based on V3
information models and development
methodology
• Components
– HL7 V3 Reference Information Model (RIM)
– HL7 V3 Messaging
– HL7 Development Framework (HDF)
19
Sample HL7 v.2 Message
(Lab Result)
OBX|1|NM|10839-9^TROPONIN-I^LN||5|ng/ml|
0-1.3|H||H|F|19980309…
20
Sample HL7 v.3 Message
(Patient Registration)
<?xml version="1.0" encoding="UTF-8"?>
<PRPA_IN101311UV02 xmlns="urn:hl7-org:v3"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
ITSVersion="XML_1.0" xsi:schemaLocation="urn:hl7-org:v3
../schemas/PRPA_IN101311UV02.xsd">
...
<name use="SYL" >
<given>นวนรรน</given>
<family>ธีระอัมพรพันธุ</family>
</name>
<name use="ABC">
<given>Nawanan</given>
<family>Theera-Ampornpunt</family>
</name>
<administrativeGenderCode code="M"/>
...
</PRPA_IN101311UV02>
Message source adapted from Ramathibodi HL7 Project by Supachai Parchariyanon,
Kavin Asavanant, Sireerat Srisiriratanakul & Chaiwiwat Tongtaweechaikit
21
HL7 Reference Information Model (RIM)
Source: HL7 CDA R2
22
HL7 V3 Messaging
• V3 provides messaging standards for
– Patient administration
– Medical records
– Orders
– Laboratory
– Claims & Reimbursement
– Care provision
– Clinical genomics
– Public Health
– Etc.
23
How HL7 V3 Works
• Message sent from sending application to
receiving application
• Message in XML with machine-
processable elements conforming to
messaging standard
• Data elements in message conform to RIM
• Not designed for human readability
24
What Is HL7 CDA?
• “A document markup standard that
specifies structure & semantics of “clinical
documents” for the purpose of exchange”
[Source: HL7 CDA Release 2]
• Focuses on document exchange, not
message exchange
• A document is packaged in a message
during exchange
• Note: CDA is not designed for document
storage. Only for exchange!!
25
A Clinical Document (3)
• A CDA document is a defined & complete
information object that can include
 Text
 Images
 Sounds
 Other multimedia content
Source: HL7 CDA R2
26
Key Aspects of CDA
• CDA documents are encoded in XML
• CDA documents derive their machine
processable meaning from HL7 RIM and
use HL7 V3 Data Types
• CDA specification is richly expressive &
flexible
 Templates can be used to constrain generic
CDA specifications
Source: HL7 CDA R2
27
Scope of CDA
Lab Technician Physician
Lab Report
Create
document
Process &
Store
document
Transmit
document
CDA
28
CDA & HL7 Messages
• Documents complement HL7 messaging
specifications
• Documents are defined and complete information
objects that can exist outside of a messaging
context
• A document can be a MIME-encoded payload
within an HL7 message
Source: “What is CDA R2? by Calvin E. Beebe
at HL7 Educational Summit in July 2012
29
CDA & Message Exchange
• CDA can be payload (or content) in any kind of
message
– HL7 V2.x message
– HL7 V3 message
– EDI ANSI X12 message
– IHE Cross-Enterprise Document Sharing (XDS)
message
• And it can be passed from one kind to
another
Source: “What is CDA R2? by Calvin E. Beebe
at HL7 Educational Summit in July 2012
30
CDA & Message Exchange
Clinical Document
(Payload)
HL7 V3 Message
(Message)
HL7 V2 Message
(Message)
Source: Adapted from “What is CDA R2? by Calvin E. Beebe
at HL7 Educational Summit in July 2012
31
CDA As Payload
Source: From “What is CDA R2? by Calvin E. Beebe
at HL7 Educational Summit in July 2012
32
Components of CDA Document
• Header
• Body
– Section
– Entry (machine processable)
– Narrative Block (human readable)
Source: HL7 CDA R2
33
CDA Model
Source: From “What is CDA R2? by Calvin E. Beebe
at HL7 Educational Summit in July 2012
34
A Closer Look at a CDA Document
<ClinicalDocument> ... CDA Header ...
<structuredBody> <section> <text>... Single
Narrative Block ...</text>
<observation>...</observation>
<substanceAdministration>
<supply>...</supply>
</substanceAdministration> <observation>
<externalObservation>...
</externalObservation> </observation>
</section> <section> <section>...</section>
</section> </structuredBody>
</ClinicalDocument>
Source: HL7 CDA R2
Human Readable Part
Machine Processable Parts
35
Rendering CDA Documents (1)
Source: From “What is CDA R2? by Calvin E. Beebe
at HL7 Educational Summit in July 2012
36
Rendering CDA Documents (2)
Source: From “What is CDA R2? by Calvin E. Beebe
at HL7 Educational Summit in July 2012
37
CDA Releases
• CDA Release 1 (ANSI-approved in 2000)
– First specification derived from HL7 RIM
• CDA Release 2 (2005) - Current Release
– Basic model essentially unchanged from R1
• Document has a header & a body
• Body contains nested sections
• Sections can be coded using standard vocabularies and can
contain entries
– Derived from HL7 RIM Version 2.07
Source: HL7 CDA R2
38
Some Possible Use Cases of CDA
 Intra-institutional
 Exchange of parts of medical records (scanned or
structured electronic health records)
 Lab/Imaging requests & reports
 Prescriptions/order forms
 Admission notes
 Progress notes
 Operative notes
 Discharge summaries
 Payment receipts
 Other forms/documents (clinical or administrative)
39
Some Possible Use Cases of CDA
 Inter-institutional
 Referral letters
 Claims requests or reimbursement documents
 External lab/imaging reports
 Visit summary documents
 Insurance eligibility & coverage documents
 Identification documents
 Disease reporting
 Other administrative reports
40
Achieving Interoperability
 CDA is a general-purpose, broad standard
 Use in each use case or context requires
implementation guides to constrain CDA
 Examples
 Operative Note (OP)
 Consultation Notes (CON)
 Care Record Summary (CRS)
 Continuity of Care Document (CCD)
 CDA for Public Health Case Reports (PHCRPT)
 Quality Reporting Document Architecture (QRDA)
41
CDA Extensibility
 Locally-defined markup possible when local
semantics have no corresponding representation
in CDA specification
 Additional XML elements & attributes that are not
included in CDA Schema are permitted in local
extensions
42
CDA Summary (1)
 CDA is a markup standard for document
exchange
 Not message exchange
 Not document storage or processing
 CDA is a general-purpose standard
 Use in specific context requires
Implementation Guides (and possibly
Extensions)
43
CDA Summary (2)
 CDA is XML-based and RIM-based
 CDA documents can be exchanged as
encapsulated data (payload) in any message
(HL7 V2, HL7 V3, etc.)
 CDA is not dependent on using HL7 V3
messages
 Most likely early use cases for CDA
 Referrals
 Claims & Reimbursements
 Lab/imaging Reports
 Electronic Health Records Documents
44
RAMATHIBODI
EXPERIENCE
45
Overall2009
• Study
• HL7v3 RIM
• HL7v3 Tools
• Implement
• Prototype :
Patient
Registration
2010
•Study
•HL7v3
Laboratory
•HL7v3 CDA
•Implement
•Prototype CDA
•Data Exchange
(RAMA-SCG)
2011
•Study
•Mirth
•DICOM
•Distributors
•JCAPS
•Observation
Results
•Implement
•CDA Referral
•JCAPS LIS to
HIS
2012
•Study
•Distributors
•JCAPS
•Admit / Discharge
/ Transfers
•Implement
•JCAPS
•ADT
2013
• Next Step
46
2010
• Study
–HL7v3
• Laboratory
–HL7v3 CDA
• Implement
–Data Exchange (RAMA-SCG)
–Prototype CDA
47
RAMA-SCG:
Existing Process
48
Exchange Interoperability
49
Message Exchange
LIS JCAPS
HL7v2.3.1
50
HL7 V3
Message
51
Lab Results
52
Thailand’s HL7
Certified Specialists
 HL7 V3 Reference Information Model (RIM)
 Kavin Asavanant Kyoto, Japan May 14, 2009
 Sireerat Srisiriratanakul Atlanta, GA May 9, 2013
 HL7 CDA
 Supachai Parchariyanon Durham, NC Mar 25, 2010
 Nawanan St. Louis, MO Jul 19, 2012
Theera-Ampornpunt
53
54
55
Next Steps
Encourage adoption of HL7 CDA at Ramathibodi
and in other hospitals
56
Q/A

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Ramathibodi Hospital's Experience with HL7 & HL7 CDA Standards

  • 1. 1 Ramathibodi Hospital’s Experience with HL7 & HL7 CDA Standards Nawanan Theera-Ampornpunt, M.D., Ph.D. Informatics Division, Faculty of Medicine Ramathibodi Hospital Certified HL7 CDA Specialist
  • 2. 2 A Bit About Myself... 2003 M.D. (First-Class Honors) (Ramathibodi) 2009 M.S. in Health Informatics (U of MN) 2011 Ph.D. in Health Informatics (U of MN) 2012 Certified HL7 CDA Specialist Former Deputy Chief, Informatics Division Deputy Executive Director for Informatics, Chakri Naruebodindra Medical Institute Faculty of Medicine Ramathibodi Hospital nawanan.the@mahidol.ac.th
  • 3. 3 Outline • A Vision • HL7 & HL7 CDA Standards • Ramathibodi’s Experience Acknowledgments • Some of these slides are reproduced/adapted from those of Dr. Supachai Parchariyanon, Miss Sireerat Srisiriratanakul, and Mr. Chaiwiwat Thongtaveechaikit at Ramathibodi
  • 5. 5 eHealth Health Information Exchange (HIE) Hospital A Hospital B Clinic C Government Lab Patient at Home
  • 6. 6 Standards: Why? • The Large N Problem N = 2, Interface = 1 # Interfaces = N(N-1)/2 N = 3, Interface = 3 N = 5, Interface = 10 N = 100, Interface = 4,950
  • 7. 7 eHealth Health Information Exchange (HIE) Hospital A Hospital B Clinic C Government Lab Patient at Home
  • 8. 8 Objectives • Interoperability • Inter-operable systems Ultimate Goals • Continuity of Care • Quality  Safety  Timeliness  Effectiveness  Equity  Patient-Centeredness  Efficiency Why Health Information Standards?
  • 10. 10 Various Kinds of Standards in Health Care • Unique Identifiers • Standard Data Sets • Vocabularies & Terminologies • Exchange Standards – Message Exchange – Document Exchange • Functional Standards • Technical Standards: Data Communications, Encryption, Security
  • 11. 11 Functional Semantic Syntactic How Standards Support Interoperability Technical Standards (TCP/IP, encryption, security) Exchange Standards (HL7 v.2, HL7 v.3 Messaging, HL7 CDA, DICOM) Vocabularies, Terminologies, Coding Systems (ICD-10, ICD-9, CPT, SNOMED CT, LOINC) Information Models (HL7 v.3 RIM, ASTM CCR, HL7 CCD) Standard Data Sets Functional Standards (HL7 EHR Functional Specifications) Some may be hybrid: e.g. HL7 v.3, HL7 CCD Unique ID
  • 12. 12 Message Exchange • Goal: Specify format for exchange of data • Internal vs. external messages • Examples  HL7 v.2  HL7 v.3 Messaging  DICOM  NCPDP Document Exchange • Goal: Specify format for exchange of “documents” • Examples  HL7 v.3 Clinical Document Architecture (CDA)  ASTM Continuity of Care Record (CCR)  HL7 Continuity of Care Document (CCD) Exchange Standards
  • 13. 13 Messages • Human Unreadable • Machine Processable Clinical Documents • Human Readable • (Ideally) Machine Processable Exchange Standards
  • 14. 14 Hospital A Hospital B Clinic C Government Lab Patient at Home Message Exchange Message Message Message Message Message
  • 15. 15 Hospital A Hospital B Clinic C Government Lab Patient at Home Clinical Document Exchange Message containing Referral Letter Message containing Claims Request Message containing Lab Report Message containing Patient Visit Summary Message containing Communicable Disease Report
  • 16. 16 HL7 & HL7 CDA STANDARDS
  • 17. 17 HL7 Standards • HL7 V2.x – Defines electronic messages supporting hospital operations • HL7 V3 • HL7 Clinical Document Architecture (CDA) Releases 1 and 2 • HL7 Arden Syntax – Representation of medical knowledge • HL7 EHR & PHR Functional Specifications • Etc.
  • 18. 18 HL7 V3 Standards • A family of standards based on V3 information models and development methodology • Components – HL7 V3 Reference Information Model (RIM) – HL7 V3 Messaging – HL7 Development Framework (HDF)
  • 19. 19 Sample HL7 v.2 Message (Lab Result) OBX|1|NM|10839-9^TROPONIN-I^LN||5|ng/ml| 0-1.3|H||H|F|19980309…
  • 20. 20 Sample HL7 v.3 Message (Patient Registration) <?xml version="1.0" encoding="UTF-8"?> <PRPA_IN101311UV02 xmlns="urn:hl7-org:v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ITSVersion="XML_1.0" xsi:schemaLocation="urn:hl7-org:v3 ../schemas/PRPA_IN101311UV02.xsd"> ... <name use="SYL" > <given>นวนรรน</given> <family>ธีระอัมพรพันธุ</family> </name> <name use="ABC"> <given>Nawanan</given> <family>Theera-Ampornpunt</family> </name> <administrativeGenderCode code="M"/> ... </PRPA_IN101311UV02> Message source adapted from Ramathibodi HL7 Project by Supachai Parchariyanon, Kavin Asavanant, Sireerat Srisiriratanakul & Chaiwiwat Tongtaweechaikit
  • 21. 21 HL7 Reference Information Model (RIM) Source: HL7 CDA R2
  • 22. 22 HL7 V3 Messaging • V3 provides messaging standards for – Patient administration – Medical records – Orders – Laboratory – Claims & Reimbursement – Care provision – Clinical genomics – Public Health – Etc.
  • 23. 23 How HL7 V3 Works • Message sent from sending application to receiving application • Message in XML with machine- processable elements conforming to messaging standard • Data elements in message conform to RIM • Not designed for human readability
  • 24. 24 What Is HL7 CDA? • “A document markup standard that specifies structure & semantics of “clinical documents” for the purpose of exchange” [Source: HL7 CDA Release 2] • Focuses on document exchange, not message exchange • A document is packaged in a message during exchange • Note: CDA is not designed for document storage. Only for exchange!!
  • 25. 25 A Clinical Document (3) • A CDA document is a defined & complete information object that can include  Text  Images  Sounds  Other multimedia content Source: HL7 CDA R2
  • 26. 26 Key Aspects of CDA • CDA documents are encoded in XML • CDA documents derive their machine processable meaning from HL7 RIM and use HL7 V3 Data Types • CDA specification is richly expressive & flexible  Templates can be used to constrain generic CDA specifications Source: HL7 CDA R2
  • 27. 27 Scope of CDA Lab Technician Physician Lab Report Create document Process & Store document Transmit document CDA
  • 28. 28 CDA & HL7 Messages • Documents complement HL7 messaging specifications • Documents are defined and complete information objects that can exist outside of a messaging context • A document can be a MIME-encoded payload within an HL7 message Source: “What is CDA R2? by Calvin E. Beebe at HL7 Educational Summit in July 2012
  • 29. 29 CDA & Message Exchange • CDA can be payload (or content) in any kind of message – HL7 V2.x message – HL7 V3 message – EDI ANSI X12 message – IHE Cross-Enterprise Document Sharing (XDS) message • And it can be passed from one kind to another Source: “What is CDA R2? by Calvin E. Beebe at HL7 Educational Summit in July 2012
  • 30. 30 CDA & Message Exchange Clinical Document (Payload) HL7 V3 Message (Message) HL7 V2 Message (Message) Source: Adapted from “What is CDA R2? by Calvin E. Beebe at HL7 Educational Summit in July 2012
  • 31. 31 CDA As Payload Source: From “What is CDA R2? by Calvin E. Beebe at HL7 Educational Summit in July 2012
  • 32. 32 Components of CDA Document • Header • Body – Section – Entry (machine processable) – Narrative Block (human readable) Source: HL7 CDA R2
  • 33. 33 CDA Model Source: From “What is CDA R2? by Calvin E. Beebe at HL7 Educational Summit in July 2012
  • 34. 34 A Closer Look at a CDA Document <ClinicalDocument> ... CDA Header ... <structuredBody> <section> <text>... Single Narrative Block ...</text> <observation>...</observation> <substanceAdministration> <supply>...</supply> </substanceAdministration> <observation> <externalObservation>... </externalObservation> </observation> </section> <section> <section>...</section> </section> </structuredBody> </ClinicalDocument> Source: HL7 CDA R2 Human Readable Part Machine Processable Parts
  • 35. 35 Rendering CDA Documents (1) Source: From “What is CDA R2? by Calvin E. Beebe at HL7 Educational Summit in July 2012
  • 36. 36 Rendering CDA Documents (2) Source: From “What is CDA R2? by Calvin E. Beebe at HL7 Educational Summit in July 2012
  • 37. 37 CDA Releases • CDA Release 1 (ANSI-approved in 2000) – First specification derived from HL7 RIM • CDA Release 2 (2005) - Current Release – Basic model essentially unchanged from R1 • Document has a header & a body • Body contains nested sections • Sections can be coded using standard vocabularies and can contain entries – Derived from HL7 RIM Version 2.07 Source: HL7 CDA R2
  • 38. 38 Some Possible Use Cases of CDA  Intra-institutional  Exchange of parts of medical records (scanned or structured electronic health records)  Lab/Imaging requests & reports  Prescriptions/order forms  Admission notes  Progress notes  Operative notes  Discharge summaries  Payment receipts  Other forms/documents (clinical or administrative)
  • 39. 39 Some Possible Use Cases of CDA  Inter-institutional  Referral letters  Claims requests or reimbursement documents  External lab/imaging reports  Visit summary documents  Insurance eligibility & coverage documents  Identification documents  Disease reporting  Other administrative reports
  • 40. 40 Achieving Interoperability  CDA is a general-purpose, broad standard  Use in each use case or context requires implementation guides to constrain CDA  Examples  Operative Note (OP)  Consultation Notes (CON)  Care Record Summary (CRS)  Continuity of Care Document (CCD)  CDA for Public Health Case Reports (PHCRPT)  Quality Reporting Document Architecture (QRDA)
  • 41. 41 CDA Extensibility  Locally-defined markup possible when local semantics have no corresponding representation in CDA specification  Additional XML elements & attributes that are not included in CDA Schema are permitted in local extensions
  • 42. 42 CDA Summary (1)  CDA is a markup standard for document exchange  Not message exchange  Not document storage or processing  CDA is a general-purpose standard  Use in specific context requires Implementation Guides (and possibly Extensions)
  • 43. 43 CDA Summary (2)  CDA is XML-based and RIM-based  CDA documents can be exchanged as encapsulated data (payload) in any message (HL7 V2, HL7 V3, etc.)  CDA is not dependent on using HL7 V3 messages  Most likely early use cases for CDA  Referrals  Claims & Reimbursements  Lab/imaging Reports  Electronic Health Records Documents
  • 45. 45 Overall2009 • Study • HL7v3 RIM • HL7v3 Tools • Implement • Prototype : Patient Registration 2010 •Study •HL7v3 Laboratory •HL7v3 CDA •Implement •Prototype CDA •Data Exchange (RAMA-SCG) 2011 •Study •Mirth •DICOM •Distributors •JCAPS •Observation Results •Implement •CDA Referral •JCAPS LIS to HIS 2012 •Study •Distributors •JCAPS •Admit / Discharge / Transfers •Implement •JCAPS •ADT 2013 • Next Step
  • 46. 46 2010 • Study –HL7v3 • Laboratory –HL7v3 CDA • Implement –Data Exchange (RAMA-SCG) –Prototype CDA
  • 52. 52 Thailand’s HL7 Certified Specialists  HL7 V3 Reference Information Model (RIM)  Kavin Asavanant Kyoto, Japan May 14, 2009  Sireerat Srisiriratanakul Atlanta, GA May 9, 2013  HL7 CDA  Supachai Parchariyanon Durham, NC Mar 25, 2010  Nawanan St. Louis, MO Jul 19, 2012 Theera-Ampornpunt
  • 53. 53
  • 54. 54
  • 55. 55 Next Steps Encourage adoption of HL7 CDA at Ramathibodi and in other hospitals