mapping loinc with thai local code
DESCRIPTION
Preliminary study of Mapping LOINC codes with Thai local codes.TRANSCRIPT
Thai Heal th Informat ics 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 ( T H I S )
MAPPING THAI LOCAL
LABORATORY CODES WITH LOINC :
THE PRELIMINARY REPORT
WANCHANA PONTONGMAK
Dr. BOONCHAI KIJSANAYOTIN
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Outline
Background & Rational
LOINC
Objective
Materials & Method
Result
Conclusions & Discussions
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Background & Rational
Health data standard facilitated sharing and
exchanging health data with semantic interoperability
Thailand does not have standards for clinical
laboratory tests
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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
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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
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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
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Objective
This study aims to study the coverage of LOINC
terms with Thai local laboratory terms
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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
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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)
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Materials & Method
2. Burirum province’s Laboratory information
system’s code list. (732 terms)
Laboratory tests (596 terms)
X-ray tests (136 terms)
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Materials & Method
• LOINC database and RELMA
- Available at www.loinc.org
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Materials & Method
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Materials & Method
Importing local terms to RELMA
Text tab delimited file
Verifying unreadable terms
Non-generic name
Inaccurate data entry
Local name
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Materials & Method
Mapping
RELMA
Algorithm
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Mapping type Local
code Local test
LOINC
codes LOINC name
199 VCT 3183-1 Clotting time : Time : Pt : Bld : Qn : Lee White
264 Hct
20570-8
4544-3
48703-3
31100-1
4545-0
32354-3
42908-4
41654-5
Hematocrit : VFr : Pt : Bld : Qn
Hematocrit : VFr : Pt : Bld : Qn : Automated
Hematocrit : VFr : Pt : Bld : Qn : Estimated
Hematocrit : VFr : Pt : Bld : Qn : Impedance
Hematocrit : VFr : Pt : Bld : Qn : Spun
Hematocrit : VFr : Pt : BldA : Qn
Hematocrit : VFr : Pt : BldC : Qn
Hematocrit : VFr : Pt : BldV : Qn
310 จอง / เตรียมผา่ตดั
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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
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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
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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)
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Conclusions & Discussions
• Limitation of mapper knowledge domain
Laboratory experts knowledge could increase
accuracy mapping results
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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
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