Where not defined in this section, refer to the UK Core standard.
The code system for the NHS Dictionary of Medicines and Devices (dm+d) is
<medicationCodeableConcept> <coding> <system value="https://dmd.nhs.uk" /> <code value="317972000" /> <display value="Furosemide 40mg tablets" /> </coding> </medicationCodeableConcept>
The code system for the SNOMED-CT is
<route> <coding> <system value="http://snomed.info/sct" /> <code value="26643006" /> <display value="oral" /> </coding> </route>
Units of Measure
A unit of measure is required when describing a dosage and can be supplied via one of two code systems:
Preferred: Unified Code for Units of Measure (UCUM)
The Unified Code for Units of Measure (UCUM) is preferred and should be used where possible.
Examples of when a UCUM unit of measure would be used are:
- gram (g)
- milliliter (ml)
- percent (%)
<quantity> <value value="12.5" /> <unit value="milliliter" /> <system value="http://unitsofmeasure.org" /> <code value="ml" /> </quantity>
In the instance where a UCUM unit of measure is not defined, use a SNOMED-CT unit of measure instead. All units of measure are descendants of concept
767524001 | Unit of measure (qualifier value) which includes both UCUM and non-UCUM codes.
732935002 | Unit of presentation (unit of presentation), which is also a descendant of the Unit of measure concept, holds a list non-UCUM units of measure that are used within prescribing:
Examples of where a SNOMED-CT unit of measure would typically be used are:
<quantity> <value value="2" /> <unit value="tablet" /> <system value="http://snomed.info/sct" /> <code value="428673006" /> </quantity>