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Recommendation:

To identify the requested observation/test/battery LOINC should be used as the standard coding system.

Alternative 1:

The SNOMED CT expression associated with a LOINC code may be used.

Alternative 2:

SNOMED CT concepts from the 15220000 |Laboratory test| or 363787002 |Observable entity| hierarchies may be used.

Examples

Example 1: Value set for Lab Test orderables that could be used for influenza

Table 5.2.2-1: Value Set Code PHVS_LabTestOrder_PHLIP_Flu

Concept Code

Preferred Concept Name

Code System Name

68991-9

Epidemiologically important information for public health reporting panel

LOINC

29591-5

Enterovirus RNA [Presence] in Unspecified specimen by Probe & target amplification method

LOINC

60528-7

Enterovirus subtype [Type] in Unspecified specimen by Probe & target amplification method

LOINC

5843-8

EV XXX cult

LOINC

43364-9

Enterovirus identified in Unspecified specimen by Immunofluorescence

LOINC

5229-0

Influenza Virus A (Ab) CF Titer

LOINC

5230-8

Influenza Virus B (Ab) CF Titer

LOINC

6604-3

Influenza Virus Culture for Isolation on XXX

LOINC

6437-8

Influenza Virus A+B EIA on XXX

LOINC

5862-8

Influenza Virus A EIA on XXX

LOINC

https://phinvads.cdc.gov/vads/ViewValueSet.action?id=2EFBC056-83A9-E311-8D07-0017A477041A#

Example 2: Laboratory Orders in National Animal Health Laboratory Network

The NAHLN uses LOINC codes to defining the test or panel/battery ordered as the Universal Service Identifier (OBR-4). In the NAHLN, new tests or panels that do not have an assigned LOINC Code, are identified with an alternative or local identifier.

Table 5.2.2-2: Subset of Test Codes in National Animal Health Laboratory Network

CODE

CODINGSYSTEM

TEXT

44273-1

LN

CSFV RNA XXX PCR-aCnc

10739-1

LN

Virus XXX EM

15444-3

LN

FLUA Ab Ser Ql ID

15448-4

LN

APMV1 Ab Titr Ser HAI

22822-1

LN

FLUA Ab Ser Ql EIA

22826-2

LN

FLUA XXX Bioassay

22832-0

LN

APMV1 XXX Bioassay

23002-9

LN

CSFV Ab Ser Ql EIA

23006-0

LN

CSFV Ag XXX Ql IF

23007-8

LN

CSFV Ag Tiss Ql ImStn

23108-4

LN

FMDV Ab Ser Ql EIA

23109-2

LN

FMDV Ab Ser Ql ID

23115-9

LN

FMDV Sertyp XXX CF

23120-9

LN

FMDV Sertyp XXX EIA

23121-7

LN

FMDV Sertyp Tissue PCR

23379-1

LN

Abn Prion Prot Brain Ql IB

23380-9

LN

Abn Prion Prot Brain Ql ImStn

23563-0

LN

VSIV Ab Ser Ql EIA

http://vtsl.vetmed.vt.edu/nahln/main.cfm?page=subset&subset=observation_id

 


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