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Medication Administration Route and Method

dosageInstruction.route​

This field specifies the pathway by which the medication will be taken into or applied to the body. It describes the site of administration. The route is represented using a CodeableConcept.

Route information will be fetched from the Medication API

Example
    {
        "route": {
          "coding": [ {
            "system": "http://snomed.info/sct",
            "code": "372468001",
            "display": "Intraocular use"
          } ],
          "text": "Intraocular use"
        }
    }

dosageInstruction.method​

This field specifies the manner in which the medication is introduced via the chosen route. It describes the technique used for administration. Similar to route, the method is also represented as a CodeableConcept, allowing for coded values that describe the specific technique or device used for administration. Relationship to route: The method often depends on or further clarifies the route.

Method information will be fetched from the Medication API

Example
    {
        "method": {
          "coding": [ {
            "system": "https://fhir.mona.icu/CodeSystem/mona-medication-administration-method",
            "code": "OCULAR",
            "display": "Okulär"
          } ],
          "text": "Okulär"
        }
    }
info

Multiple Dosage Instructions:

It's important to note that dosageInstruction is an array in MedicationRequest FHIR resource. This design allows for prescribing a medication with different dosages and frequencies, and crucially, each individual dosage instruction can also have its own distinct route and method.

For example, a medication might be prescribed with an initial intravenous bolus (route: intravenous, method: IV push) followed by a continuous subcutaneous infusion (route: subcutaneous, method: continuous infusion).