Dose syntax implementation guidance for FHIR STU3

This guidance is under active development by NHS Digital and content may be added or updated on a regular basis.

Prednisolone 5mg tablets, have 8 tablets a day after food for 7 days then stop

Product-based prescription with course length, when and additional instruction.
<MedicationRequest xmlns="http://hl7.org/fhir">
<id value="a2477cc3-432c-420a-a219-c6bf5af646da" />
<contained>
<Medication>
<id value="internalMedicationIdnetifierXYZ" />
<code>
<coding>
<system value="http://snomed.info/sct" />
<code value="325427002" />
<display value="Prednisolone 5mg tablets" />
</coding>
</code>
</Medication>
</contained>
<status value="active" />
<intent value="order" />
<medicationReference>
<reference value="#internalMedicationIdnetifierXYZ" />
<display value="Prednisolone 5mg tablets" />
</medicationReference>
<subject>
<identifier>
<system value="https://fhir.nhs.uk/Id/nhs-number" />
<value value="9999999999" />
</identifier>
</subject>
<dosageInstruction>
<additionalInstruction>
<coding>
<system value="http://snomed.info/sct" />
<code value="422327006" />
<display value="Then stop" />
</coding>
</additionalInstruction>
<timing>
<repeat>
<boundsDuration>
<value value="7" />
<unit value="day" />
<system value="http://unitsofmeasure.org" />
<code value="d" />
</boundsDuration>
<frequency value="1" />
<period value="1" />
<periodMax value="1" />
<periodUnit value="d" />
<when value="PC" />
</repeat>
</timing>
<doseQuantity>
<value value="8" />
<unit value="tablet" />
<system value="http://snomed.info/sct" />
<code value="428673006" />
</doseQuantity>
</dosageInstruction>
</MedicationRequest>
{
"resourceType": "MedicationRequest",
"id": "a2477cc3-432c-420a-a219-c6bf5af646da",
"contained": [
{
"resourceType": "Medication",
"id": "internalMedicationIdnetifierXYZ",
"code": {
"coding": [
{
"system": "http://snomed.info/sct",
"code": "325427002",
"display": "Prednisolone 5mg tablets"
}
]
}
}
],
"status": "active",
"intent": "order",
"medicationReference": {
"reference": "#internalMedicationIdnetifierXYZ",
"display": "Prednisolone 5mg tablets"
},
"subject": {
"identifier": {
"system": "https://fhir.nhs.uk/Id/nhs-number",
"value": "9999999999"
}
},
"dosageInstruction": [
{
"additionalInstruction": [
{
"coding": [
{
"system": "http://snomed.info/sct",
"code": "422327006",
"display": "Then stop"
}
]
}
],
"timing": {
"repeat": {
"boundsDuration": {
"value": 7,
"unit": "day",
"system": "http://unitsofmeasure.org",
"code": "d"
},
"frequency": 1,
"period": 1,
"periodMax": 1,
"periodUnit": "d",
"when": [
"PC"
]
}
},
"doseQuantity": {
"value": 8,
"unit": "tablet",
"system": "http://snomed.info/sct",
"code": "428673006"
}
}
]
}
MedicationRequest.id[0]a2477cc3-432c-420a-a219-c6bf5af646da
MedicationRequest.contained[0].id[0]internalMedicationIdnetifierXYZ
MedicationRequest.contained[0].code[0].coding[0].system[0]http://snomed.info/sct
MedicationRequest.contained[0].code[0].coding[0].code[0]325427002
MedicationRequest.contained[0].code[0].coding[0].display[0]Prednisolone 5mg tablets
MedicationRequest.status[0]active
MedicationRequest.intent[0]order
MedicationRequest.medication[0].reference[0]#internalMedicationIdnetifierXYZ
MedicationRequest.medication[0].display[0]Prednisolone 5mg tablets
MedicationRequest.subject[0].identifier[0].system[0]https://fhir.nhs.uk/Id/nhs-number
MedicationRequest.subject[0].identifier[0].value[0]9999999999
MedicationRequest.dosageInstruction[0].additionalInstruction[0].coding[0].system[0]http://snomed.info/sct
MedicationRequest.dosageInstruction[0].additionalInstruction[0].coding[0].code[0]422327006
MedicationRequest.dosageInstruction[0].additionalInstruction[0].coding[0].display[0]Then stop
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].bounds[0].value[0]7
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].bounds[0].unit[0]day
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].bounds[0].system[0]http://unitsofmeasure.org
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].bounds[0].code[0]d
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].frequency[0]1
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].period[0]1
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].periodMax[0]1
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].periodUnit[0]d
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].when[0]PC
MedicationRequest.dosageInstruction[0].dose[0].value[0]8
MedicationRequest.dosageInstruction[0].dose[0].unit[0]tablet
MedicationRequest.dosageInstruction[0].dose[0].system[0]http://snomed.info/sct
MedicationRequest.dosageInstruction[0].dose[0].code[0]428673006
MedicationRequest
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