We have made a correction on our MedicationAdministration DSTU2 resource.
We now return contained medication product.ingredient.amount.denominator field for the contained medication.
Infuse or Bolus administration results for continuous infusion orders may require additional calculations to determine the actual amount of medication administered per ingredient. An additional calculation is required when the dosage quantity does not equal the contained Medication product ingredient amount denominator. In this case, calculate the ratio between the ingredient’s numerator divided by the denominator and multiply by dosage quantity. This will be the actual amount of medication administered.
Note: These corrections may be breaking changes for your use cases. Current users of the MedicationAdministration API should test in their non-production domains. Cerner will coordinate with you and your developers of 3rd party applications to enable in your production domains.