1. Thai Health Informatics Academy
T h a i H e a l t h I n f o r m a t i o n S t a n d a r d D e v e l o p m e n t C e n t e r ( TH I S )
MAPPING THAI LOCAL
LABORATORY CODES WITH LOINC :
THE PRELIMINARY REPORT
WANCHANA PONTONGMAK
Dr. BOONCHAI KIJSANAYOTIN
2. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Outline
Background & Rational
LOINC
Objective
Materials & Method
Result
Conclusions & Discussions
3. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Background & Rational
Health data standard facilitated sharing and
exchanging health data with semantic interoperability
Thailand does not have standards for clinical
laboratory tests
4. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Background & Rational
Thai healthcare service will adopt LOINC as the
national laboratory standard
Suitability of LOINC for Thai healthcare service
indicated by mapping local tests with LOINC
5. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
What is LOINC ?
Logical Observation Identifiers names and codes
(LOINC) is a unique identifier for medical laboratory
and clinical observations
• LOINC contains 70,689 terms
• LOINC is broadly used in many countries
6. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
What does LOINC look like?
Serial code 1-5 digit and 1 check digit
The name consist of 6 axes
<component>:<property>:<time>:<sample>:<scale>:<method>
20509-6 Hemoglobin : MCnc : Pt : Bld : Qn : Calculated
Long name Hemoglobin [Mass/volume] in Blood by calculation
7. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Objective
This study aims to study the coverage of LOINC
terms with Thai local laboratory terms
8. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Research Concept &
Expected Results
Mapping LOINC with local laboratory tests to study
the coverage of LOINC for Thai local laboratory tests
in order to support decision making by policy maker
9. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Materials & Method
Local laboratory test form
1. Thai Comptroller General’s Department’s
reimbursement codes list.
3 selected groups form 16 reimbursement groups (721 terms)
Laboratory tests (498 terms)
Radiology tests (182 terms)
Special tests (41 terms)
10. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Materials & Method
2. Burirum province’s Laboratory information
system’s code list. (732 terms)
Laboratory tests (596 terms)
X-ray tests (136 terms)
11. Thai Health Informatics Academy
Thai Health Information Standard Development Center(THIS)
- Available at www.loinc.org
• LOINC database and RELMA
Materials & Method
12. Thai Health Informatics Academy
Thai Health Information Standard Development Center(THIS)
Materials & Method
13. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Materials & Method
Importing local terms to RELMA
Text tab delimited file
Verifying unreadable terms
Non-generic name
Inaccurate data entry
Local name
14. Thai Health Informatics Academy
Thai Health Information Standard Development Center(THIS)
Mapping
RELMA
Algorithm
Materials & Method
15. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Mapping type
Local LOINC
Local test LOINC name
code codes
199 VCT 3183-1 Clotting time : Time : Pt : Bld : Qn : Lee White
20570-8 Hematocrit : VFr : Pt : Bld : Qn
4544-3 Hematocrit : VFr : Pt : Bld : Qn : Automated
48703-3 Hematocrit : VFr : Pt : Bld : Qn : Estimated
31100-1 Hematocrit : VFr : Pt : Bld : Qn : Impedance
264 Hct
4545-0 Hematocrit : VFr : Pt : Bld : Qn : Spun
32354-3 Hematocrit : VFr : Pt : BldA : Qn
42908-4 Hematocrit : VFr : Pt : BldC : Qn
41654-5 Hematocrit : VFr : Pt : BldV : Qn
310 จอง / เตรี ยมผ่าตัด
16. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Result
More than 80% could be mapped to LOINC, of
which 23.58% are 1-1 and 63.07% are 1-Many
Mapping type Thai’s CGD Burirum’s LIS
N % N %
1-1 117 16.23 221 30.19
1-Many 467 64.77 395 53.96
Unmapped 137 19.00 116 15.85
total 721 100.00 732 100.00
17. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Conclusions & Discussions
One to many results
LOINC has higher level of granularity than local tests
6 axes of LOINC
Local code has 1-2 important axis
18. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Conclusions & Discussions
Unmapped results
Non-generic and Local names
Not part of laboratory tests
Not scope of LOINC
1. The instrument used in testing
2. Fine details about the sample or the site of collection
(e.g., upper right plural)
3. Who verified the result
4. The size of the sample collected
5. The place of testing (e.g., home, bedside, clinical lab)
19. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Conclusions & Discussions
• Limitation of mapper knowledge domain
Laboratory experts knowledge could increase
accuracy mapping results
20. Thai Health Information Standard Development Center(THIS)
Thai Health Informatics Academy
Conclusions & Discussions
More than 80% mapping result indicate LOINC is
applicable to Thai healthcare service
High number of 1-Many indicate LOINC has higher
details than local tests