Data Events - EMWR

Sample Scenario

Data Point Value unit
data → timestamp 2020-08-03T05:00:00Z UTC
data → event W-126 - Cgm session not started
data → reaction acknowledged Possible values : "acknowledged", "missed", "snoozed", "suppressed", "other"

Note : Reference to the observation EWM resource is made from the source resource having the event trigerred.

Observation resource for event - EWM


{
				"resourceType": "Observation",
				"id": "id-observation-EMWR-W-126",
				"meta": {
					"profile": [
						"http://roche.com/fhir/rdc/StructureDefinition/observation-EWM"
					]
				},
				"identifier": [
					{
						"system": "http://roche.com/fhir/rdc/sid/observation/sinovo",
						"value": "cdf.dev.im/SINOVO/SINOVOConnectionCenter/1.0.20/smartPhone/SCC-TkcxHsM0NTY4SB/SamsungGalaxy/WARNING/W-126/2P0tI8p-SF9-6850/2020-04-26T10:55:00+09:00"
					}
				],
				"status": "final",
				"category": [
					{
						"coding": [
							{
								"system": "http://roche.com/fhir/rdc/cs",
								"code": "EWM",
								"display": "Error, Warning, Maintenance, Status"
							}
						]
					}
				],
				"code": {
					"coding": [
						{
							"system": "http://roche.com/fhir/rdc/cs",
							"code": "WARNING",
							"display": "Warning"
						}
					]
				},
				"subject": {
					"reference": "Patient/2P0tI8p-SF9-6850"
				},
				"effectiveDateTime": "2020-04-26T10:55:00+09:00",
				"extension": [
				    {
                        "url": "http://roche.com/fhir/rdc/StructureDefinition/patient-timezone",
                        "valueString": "+09:00"
                    }
				],
				"performer": [
					{
						"reference": "Patient/2P0tI8p-SF9-6850"
					}
				],
				"valueCodeableConcept": {
					"coding": [
						{
							"system": "http://roche.com/fhir/rdc/cs",
							"code": "W-126",
							"display": "Cgm session not started" 
						}
					]
				},
				"device": {
					"reference": "Device/id-device"
				},
				"extension": [
		{
			"url": "http://roche.com/fhir/rdc/StructureDefinition/event-reaction",
			"valueString": "acknowledged"
		}
	]
			}

EMWR Event Type

This section describes handling different EMWR types like Error, Warning, Maintenance, Information. The following coding section needs to be added to the Observation.valueCodeableConcept, based on the type of the Event.

For example:


"code": {
					"coding": [
						{
							"system": "http://roche.com/fhir/rdc/cs",
							"code": "WARNING",
							"display": "Warning"
						}
					]
				}

FHIR coding for all possible sample types - Event types

Sample type System Code Display
Error http://roche.com/fhir/rdc/cs ERROR Error
Maintenance http://roche.com/fhir/rdc/cs MAINTENANCE Maintenance
Warning http://roche.com/fhir/rdc/cs WARNING Warning
Reminder http://roche.com/fhir/rdc/cs REMINDER Reminder
Message http://roche.com/fhir/rdc/cs INFO Info

EMWR Event Name

This section describes handling different EMWR names mentioned in the table below. The event name from the table is added to valueCodeableConcept section "Observation.valueCodeableConcept", based on the type of the Event.

For example:


"valueCodeableConcept": {
					"coding": [
						{
							"system": "http://roche.com/fhir/rdc/cs",
							"code": "W-126",
							"display": "Cgm session not started" 
						}
					]
				}

FHIR coding for all possible sample types - Event Names

Event type System Code Display
Error http://roche.com/fhir/rdc/cs E-101 Transmitter not found
Error http://roche.com/fhir/rdc/cs E-102 CGM app was terminated due to an internal error
Error http://roche.com/fhir/rdc/cs E-104 Memory full
Error http://roche.com/fhir/rdc/cs E-105 Time outside of limits
Error http://roche.com/fhir/rdc/cs E-106 Data integrity corrupted
Error http://roche.com/fhir/rdc/cs E-107 Error in flow monitor
Error http://roche.com/fhir/rdc/cs E-108 Error in flow control
Error http://roche.com/fhir/rdc/cs E-111 CGM was terminated due to an EMWR error
Error http://roche.com/fhir/rdc/cs E-112 Session ended because wrong dialog was shown
Error http://roche.com/fhir/rdc/cs E-125 Incorrect CGM system
Information http://roche.com/fhir/rdc/cs I-101 Calibration not possible
Information http://roche.com/fhir/rdc/cs I-102 End session rcommended (repeating sensor failures)
Information http://roche.com/fhir/rdc/cs I-103 Calibration failed
Maintenance http://roche.com/fhir/rdc/cs M-102 Incorrect sensor type
Maintenance http://roche.com/fhir/rdc/cs M-115 Sensor must be calibrated
Maintenance http://roche.com/fhir/rdc/cs M-116 Transmitter battery empty
Maintenance http://roche.com/fhir/rdc/cs M-117 Sensor malfunctioning
Maintenance http://roche.com/fhir/rdc/cs M-118 Connection lost to transmitter
Maintenance http://roche.com/fhir/rdc/cs M-119 No transmitter in range
Maintenance http://roche.com/fhir/rdc/cs M-120 Session ended because sensor operation time expired
Maintenance http://roche.com/fhir/rdc/cs M-122 Sensor temperature too low
Maintenance http://roche.com/fhir/rdc/cs M-123 Sensor temperature too high
Maintenance http://roche.com/fhir/rdc/cs M-124 Smartphone battery almost empty
Maintenance http://roche.com/fhir/rdc/cs M-125 Connection failure to transmitter
Remainder http://roche.com/fhir/rdc/cs R-100 Calibration required reminder
Remainder http://roche.com/fhir/rdc/cs R-101 Calibration recommended
Remainder http://roche.com/fhir/rdc/cs R-102 CGM session will end soon
Warning http://roche.com/fhir/rdc/cs W-101 Incorrect pin
Warning http://roche.com/fhir/rdc/cs W-103 Invalid bg/insulin/carb entry
Warning http://roche.com/fhir/rdc/cs W-107 Transmitter malfunctioning
Warning http://roche.com/fhir/rdc/cs W-108 Sensor malfunctioning
Warning http://roche.com/fhir/rdc/cs W-109 Cannot undo action
Warning http://roche.com/fhir/rdc/cs W-111 End cgm session confirmation
Warning http://roche.com/fhir/rdc/cs W-112 Smartphone rooted
Warning http://roche.com/fhir/rdc/cs W-126 Cgm session not started
Warning http://roche.com/fhir/rdc/cs W-130 Smartphone not supported
Warning http://roche.com/fhir/rdc/cs W-132 High CGM warning