📏 fromFHIRQuantityUnitToString

Human readable text

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Dosage

{
  "doseAndRate": [
    {
      "doseQuantity": {
        "value": "25",
        "system": "http://unitsofmeasure.org",
        "code": "ug"
      }
    }
  ]
}

Configuration

{
    fromFHIRQuantityUnitToString: ({ quantity, language }) => {
        let unit = quantity.code || quantity.unit;
        let system = quantity.system || "";

        return `[${language} translation of "${unit}" (${system})]`;
    };
}

tip

Possible cases in production :

1. SNOMED CT - http://snomed.info/sct
2. UCUM - http://unitsofmeasure.org
3. Other Code System than SNOMED CT / UCUM, such as LOINC - http://loinc.org/
4. (Local) Value Set, e.g. https://www.ehealth.fgov.be/standards/fhir/core/ValueSet/be-cd-administration-unit
5. Hardcoded unit without any system

To support them all in your fromFHIRQuantityUnitToString implementation, here are some hints :

• 3rd party library (such as @lhncbc/ucum-lhc, ...) to turn your code to human readable text
• 3rd party FHIR Terminology / Conversion server
• Translation file(s) of your (local) Value Sets
• Extensions put on Quantity, depending of your implementation guide
• ...