Details
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Change Request
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Resolution: Persuasive with Modification
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Medium
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US Core (FHIR)
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3.2.0 [deprecated]
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Cross-Group Projects
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US Core Laboratory Result Observation Profile
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Brett Marquard/Eric Haas: 17-0-3
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Enhancement
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Non-substantive
Description
Since this profile requires the use of LOINC codes I think we should explicitly document which Observation.value[x] data type to use based on the LOINC Type of Scale. I think it should go like this but I'm not sure if I have it exactly right.
| LOINC Scale Part | FHIR Data Type |
|---|---|
| Qn (Quantitative) | Quantity, integer, Range, Ratio, time, dateTime, Period |
| Ord (Ordinal) | CodeableConcept |
| Nom (Nominal) | CodeableConcept |
| Nar (Narrative) | string |
| OrdQn (Quantitative or Ordinal) | CodeableConcept, Quantity, integer, Range, Ratio, time, dateTime, Period |
| Multi (Multi) | |
| Doc (Document) |
For a precedent please see HL7 Version 2.5.1 Implementation Guide: Laboratory Results Interface, section 8.11.1 table 8-18. It provides an explicit mapping from LOINC scale types to allowed HL7 V2 data types. We ought to do the same thing for FHIR data types.
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