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.

Salbutamol, 5mg to be given via a nebuliser. Repeat every 20-30 minutes as required

Dose-based prescription (VTM) using additional instruction for device and dose timing as a range.
<MedicationRequest xmlns="http://hl7.org/fhir">
<id value="c4f1f082-75b2-4642-b1da-df15868467d6" />
<contained>
<Medication>
<id value="med1" />
<code>
<coding>
<system value="http://snomed.info/sct" />
<code value="91143003" />
<display value="Salbutamol" />
</coding>
</code>
</Medication>
</contained>
<status value="active" />
<intent value="order" />
<medicationReference>
<reference value="#med1" />
</medicationReference>
<subject>
<identifier>
<system value="https://fhir.nhs.uk/Id/nhs-number" />
<value value="9999999999" />
</identifier>
</subject>
<dosageInstruction>
<additionalInstruction>
<text value="to be given via a nebuliser" />
</additionalInstruction>
<timing>
<repeat>
<frequency value="1" />
<period value="20" />
<periodMax value="30" />
<periodUnit value="min" />
</repeat>
</timing>
<asNeededBoolean value="true" />
<route>
<coding>
<system value="http://snomed.info/sct" />
<code value="18679011000001101" />
<display value="inhalation" />
</coding>
</route>
<doseQuantity>
<value value="5" />
<unit value="milligram" />
<system value="http://unitsofmeasure.org" />
<code value="mg" />
</doseQuantity>
</dosageInstruction>
</MedicationRequest>
{
"resourceType": "MedicationRequest",
"id": "c4f1f082-75b2-4642-b1da-df15868467d6",
"contained": [
{
"resourceType": "Medication",
"id": "med1",
"code": {
"coding": [
{
"system": "http://snomed.info/sct",
"code": "91143003",
"display": "Salbutamol"
}
]
}
}
],
"status": "active",
"intent": "order",
"medicationReference": {
"reference": "#med1"
},
"subject": {
"identifier": {
"system": "https://fhir.nhs.uk/Id/nhs-number",
"value": "9999999999"
}
},
"dosageInstruction": [
{
"additionalInstruction": [
{
"text": "to be given via a nebuliser"
}
],
"timing": {
"repeat": {
"frequency": 1,
"period": 20,
"periodMax": 30,
"periodUnit": "min"
}
},
"asNeededBoolean": true,
"route": {
"coding": [
{
"system": "http://snomed.info/sct",
"code": "18679011000001101",
"display": "inhalation"
}
]
},
"doseQuantity": {
"value": 5,
"unit": "milligram",
"system": "http://unitsofmeasure.org",
"code": "mg"
}
}
]
}
MedicationRequest.id[0]c4f1f082-75b2-4642-b1da-df15868467d6
MedicationRequest.contained[0].id[0]med1
MedicationRequest.contained[0].code[0].coding[0].system[0]http://snomed.info/sct
MedicationRequest.contained[0].code[0].coding[0].code[0]91143003
MedicationRequest.contained[0].code[0].coding[0].display[0]Salbutamol
MedicationRequest.status[0]active
MedicationRequest.intent[0]order
MedicationRequest.medication[0].reference[0]#med1
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].text[0]to be given via a nebuliser
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].frequency[0]1
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].period[0]20
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].periodMax[0]30
MedicationRequest.dosageInstruction[0].timing[0].repeat[0].periodUnit[0]min
MedicationRequest.dosageInstruction[0].asNeeded[0]True
MedicationRequest.dosageInstruction[0].route[0].coding[0].system[0]http://snomed.info/sct
MedicationRequest.dosageInstruction[0].route[0].coding[0].code[0]18679011000001101
MedicationRequest.dosageInstruction[0].route[0].coding[0].display[0]inhalation
MedicationRequest.dosageInstruction[0].dose[0].value[0]5
MedicationRequest.dosageInstruction[0].dose[0].unit[0]milligram
MedicationRequest.dosageInstruction[0].dose[0].system[0]http://unitsofmeasure.org
MedicationRequest.dosageInstruction[0].dose[0].code[0]mg
MedicationRequest
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