Profile for capturing blood glucose measurements as FHIR Observation resources.

This profile defines the exchange of a single measurement data for the Mandatory Interoperable Value (MIV) "Blood Glucose Measurement" which is technically defined by the ValueSet hddt-miv-blood-glucose-measurement. This MIV is e.g. implemented by blood glucose meter (glucometer) that can connect to an Personal Health Gateway (e.g. a mobile app for keeping diabetes diary) through wireless or wired communication.

Obligations and Conventions:

Each Blood Glucose Measurement MUST either hold a reference to a Sensor Type And Calibration Status DeviceMetric resource or to a Personal Health Device Device resource (eXclusive OR). A reference to Sensor Type And Calibration Status MUST be provided from the Observation resource if the sensor for measuring blood glucose needs to be calibrated (either automatically or by the user) or if the sensor may change its calibration status over time.

Constraints applied:

• status is restricted to final
• code is constrained to the ValueSet that represents the MIV Blood Glucose Measurement
• effective[x] is restricted to effectiveDateTime and constrained as mandatory.
• value[x] is restricted to valueQuantity. The elements valueQuantity.value, valueQuantity.system, and valueQuantity.code are constrained in a way that a value MUST be provided and that UCUM MUST be used for encoding the unit of measurement. Observation.valueQuantity MAY only be omitted in case of an error that accured with the measurement. In this case, Observation.dataAbsentReason MUST be provided.
• device is set to be mandatory in order to provide the DiGA with information about the sensor's calibration status and with information about the static and dynamic attributes of the Personal Health Device.