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Measurement ranges are defined in the following, different resources:

• ActivityDefinition, in the extension ActivityDefinition.ehealth-referenceRange. These are generic, that is, non-patient specific ranges applicable for the particular activity, say, a measurement of oxygen saturation.

• ServiceRequest, in the extension ServiceRequest.ehealth-referenceRange. These are patient-specific ranges applicable to the particular activity in the particular CarePlan referencing the ServiceRequest. A Patient can have multiple CarePlan with multiple ServiceRequest and therefore, possibly differing measurement ranges even for the same activity type, say, measurement of oxygen saturation.

• Observation, in the element Observation.referenceRange

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The structure used in the extension ehealth-referenceRange contains the following subset of elements defined in Observation.referenceRange:

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• the description is Coding for reference-value (see https://docs.ehealth.sundhed.dk/latest-released/igfhir/ValueSet-ehealth-goal-description.html)

• lifeCycleStatus is accepted

• start has a startDate

• target.measure is an observation code in the ValueSet goal-target-measure similar to that of the corresponding ActivityDefinition

  • For an ActivityDefinition with code being a Coding of Blood Pressure (or other composite measurement), the Goal should contain a number of targets, each with the respective target.measure matching a component of the composite measurement (e.g. systolic and diastolic blood pressure for blood pressure).

• target.detailQuantity contains the actual reference base value (and unit). The reference base value can be

• addresses is a reference to the ServiceRequest where the relative reference range is maintained.

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Certain considerations should be made when maintaining measurement ranges in the eHealth Infrastructure. For the current list of allowed measurement range types, some can overlap and some typically should not, or at least only at their low or high bounds.

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