Stream: BRR - Pharmacy model
Topic: Representing Dose
Carmela Couderc (Mar 04 2021 at 15:47):
Representing dose in MedicationAdministration.dosage or MedicationRequest.dosageInstruction
(both reference Dosage datatype)
Reviewed 2 examples:
https://www.hl7.org/fhir/medicationadministration0310.html This example demonstrates dose as a simpleQuantity with UOM drawn from UCUM. The medication code is an NDC code.
https://www.hl7.org/fhir/medicationadministration0306.html This example demonstrates dose as a simpleQuantity with UOM drawn from v3-orderableDrugForm. The medication code is a SNOMED code.
The guidance for datatype Quantity has this text: If the unit can be coded in UCUM and a code is provided, it SHOULD be a UCUM code. If a UCUM unit is provided in the code, then a canonical value can be generated for purposes of comparison between quantities.
When evaluating a MedicationAdministration resource, how would an implementation know that a dose is represented as some multiple of the strength for the requested medication (10 mg) vs: a reference to the dose form (e.g. 2 tab)? Is the intent to find this information from the MedicationAdministration reference to Medication.ingredient.strength which is a ratio?
Use case: transmitting cumulative dose information to a registry
Melva Peters (Mar 04 2021 at 15:50):
This is probably best asked on the #Medication stream
Carmela Couderc (Mar 04 2021 at 15:55):
Thanks Melva - I posted there.
Last updated: Apr 12 2022 at 19:14 UTC
