NHS North West Genomics
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CodeSystem: CodeSystem for Chimerism Testing (OBX-3 local codes)

Official URL: https://fhir.nwgenomics.nhs.uk/CodeSystem/Chimerism Version: 2.2.0
Active as of 2026-08-30 Computable Name: Chimerism

Local OBX-3 sub-identifier codes used by the Clatterbridge chimerism testing payload - see Histocompatibility and Immunogenetics - Chimerism Testing Result Panel (Future?).

This Code system is referenced in the definition of the following value sets:

  • This CodeSystem is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

This case-sensitive code system https://fhir.nwgenomics.nhs.uk/CodeSystem/Chimerism provides a fragment that includes following codes:

CodeDisplay
STR Average % chimerism
IM Informative Markers
RANGE Range
CV CV
EXT Extraction Method
PURE % Purity
POST Time post transplant
DTP Date of transplant
DID Donor ID

Description of the above table(s).