EWM Observation

Data related to the operation and behavior of the device itself rather than containing measurements against the patient. Personal Health Devices emit operational data such as Events, Warnings, and Status (sometimes referred to as "maintenance") (EWS) information during uploads of measurements.

• Below is the category used for this Observation

  System	Code	Display
  http://roche.com/fhir/rdc/cs	EWM	Error, Warning, Maintenance, Status

Since this data is related to the operation and behavior of the device itself rather than containing measurements against the patient, it is necessary to represent the data differently.

• subject element will be mapped to Device also device element will be mapped to Device resource.

• performer element will be mapped to Patient.

• The code indicates the EWS type (ValueSet - https://simplifier.net/rdc/upr-status-code-type

• value[x] records the concrete EWS using a codeableConcept (valueSet - https://simplifier.net/rdc/upr-ewm-codes) .

Main extensions used in this profile are:

• SetCannulaFillAmount - This extension shows the amount of infusion cannula set in pump settings.
• SetTubingFillAmount - This extension shows the amount of infusion tubing set in pump settings
• observationReferenceFiles - Reference fles (like error statistics in case of GreenDot)
• RegisteredTimestamp - Timestamp when the observation was registered on the device/application

A diagram that depicts EWM Observation structure and relationships is showed below:

• EWM Observation
• Overview
• Details
• Table
• XML
• JSON
• Examples
• Event
• Warning
• Status
• Error
• Alarm
• Error Statistic