UZ Core Observation represents a measurement or finding about a patient on the Digital Health Platform - laboratory results, vital signs, and other clinical observations - coded with LOINC (SNOMED CT is also allowed). A laboratory Observation links back to the order that produced it (a ServiceRequest, CarePlan, or MedicationRequest) and to the Specimen it was measured on. See also Vital signs.

Mandatory and Must Support data elements

The elements below must always be present (mandatory) or must be supported when the data is available (Must Support) - not all are required, but your system must populate each Must Support element when it has the data and process it on receipt. This is the human-readable summary; the formal views below give the exact cardinalities, types, and terminology bindings.

Each UZ Core Observation Must Have

This profile adds no mandatory cardinality of its own. The elements required come from the base resource: a status (registered | preliminary | final | amended …) and a code identifying what was observed.

Each UZ Core Observation Must Support

• an identifier, instantiates[x] (the definition followed), and basedOn (0..1 - the originating ServiceRequest, CarePlan, or MedicationRequest);
• triggeredBy (the observation that triggered this one, with its reason) and partOf (a procedure, immunization, imaging study, or medication event);
• the status (required binding) and the category (vital-signs, laboratory …);
• the code (preferred LOINC / SNOMED binding) and the subject (usually the patient);
• a focus and the encounter the observation belongs to;
• the effective[x] time and the issued instant;
• the performer (practitioner, role, or organization);
• the result value[x], or a dataAbsentReason when there is no value;
• a free-text note;
• the specimen measured and the device used;
• a referenceRange (low, high, normalValue, age, text);
• hasMember and derivedFrom links to related observations or responses;
• component parts, each with their own code and value[x].

Use component for panels whose parts share one effective time and subject (e.g. systolic + diastolic on one blood-pressure Observation); use hasMember to group separately-resulted Observations under a panel.

Building the JSON, step by step

The examples below go from a single numeric result to a multi-part panel. Copy one and adapt it - every value shown validates against this profile. The full reference instances are linked at the bottom of the page (for example oxygen saturation, blood pressure, CBC panel).

A single quantitative result

An Observation always needs a status and a code saying what was measured. In practice you send more: the category that groups it, the subject it is about, when it was taken (effective[x]), and the result in value[x]. A numeric result is a valueQuantity carrying a UCUM unit - always include the machine-readable system and code, not just the human unit:

{
  "resourceType": "Observation",
  "meta": { "profile": [ "https://dhp.uz/fhir/core/StructureDefinition/uz-core-observation" ] },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "vital-signs",
          "display": "Vital Signs"
        }
      ]
    }
  ],
  "code": {
    "coding": [ { "system": "http://loinc.org", "code": "8310-5", "display": "Body temperature" } ]
  },
  "subject": { "reference": "Patient/example-salim" },
  "effectiveDateTime": "2025-11-04T10:30:00Z",
  "valueQuantity": {
    "value": 36.5,
    "unit": "C",
    "system": "http://unitsofmeasure.org",
    "code": "Cel"
  }
}

code is bound to LOINC/SNOMED (preferred) and says what was observed; category (vital-signs, laboratory, …) keeps the kinds apart. See Vital signs for the standard vital-sign codes and Units and quantities for the UCUM rules.

Adding an interpretation and a reference range

For a result that has a normal range, send the referenceRange and flag the value with an interpretation (normal / high / low / critical):

{
  "resourceType": "Observation",
  "meta": { "profile": [ "https://dhp.uz/fhir/core/StructureDefinition/uz-core-observation" ] },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "vital-signs",
          "display": "Vital Signs"
        }
      ]
    }
  ],
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "2708-6",
        "display": "Oxygen saturation in Arterial blood"
      }
    ]
  },
  "subject": { "reference": "Patient/example-salim" },
  "effectiveDateTime": "2025-11-04T10:30:00Z",
  "valueQuantity": { "value": 95, "unit": "%", "system": "http://unitsofmeasure.org", "code": "%" },
  "interpretation": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/v3-ObservationInterpretation",
          "code": "N",
          "display": "Normal"
        }
      ]
    }
  ],
  "referenceRange": [
    {
      "low": { "value": 90, "unit": "%", "system": "http://unitsofmeasure.org", "code": "%" },
      "high": { "value": 99, "unit": "%", "system": "http://unitsofmeasure.org", "code": "%" }
    }
  ]
}

A panel with components (e.g. blood pressure)

When several measurements share one time and subject - systolic and diastolic, or the analytes of one lab panel - put each part in component and leave the parent value[x] empty. The parent code names the panel:

{
  "resourceType": "Observation",
  "meta": { "profile": [ "https://dhp.uz/fhir/core/StructureDefinition/uz-core-observation" ] },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "vital-signs",
          "display": "Vital Signs"
        }
      ]
    }
  ],
  "code": {
    "coding": [
      { "system": "http://loinc.org", "code": "85354-9", "display": "Blood pressure panel" }
    ]
  },
  "subject": { "reference": "Patient/example-salim" },
  "effectiveDateTime": "2025-11-04T10:30:00Z",
  "component": [
    {
      "code": {
        "coding": [
          { "system": "http://loinc.org", "code": "8480-6", "display": "Systolic blood pressure" }
        ]
      },
      "valueQuantity": {
        "value": 120,
        "unit": "mmHg",
        "system": "http://unitsofmeasure.org",
        "code": "mm[Hg]"
      }
    },
    {
      "code": {
        "coding": [
          { "system": "http://loinc.org", "code": "8462-4", "display": "Diastolic blood pressure" }
        ]
      },
      "valueQuantity": {
        "value": 80,
        "unit": "mmHg",
        "system": "http://unitsofmeasure.org",
        "code": "mm[Hg]"
      }
    }
  ]
}

Use component only when the parts share one effective time and subject. To group separately-resulted Observations (each its own resource) under a panel, use hasMember instead.

When there is no result

If the test was performed but produced no value (sample unusable, patient declined), do not silently omit value[x] - send a dataAbsentReason in its place. On an Observation this is a coded CodeableConcept, not the _value extension used on Patient identifiers:

{
  "resourceType": "Observation",
  "meta": { "profile": [ "https://dhp.uz/fhir/core/StructureDefinition/uz-core-observation" ] },
  "status": "final",
  "category": [
    {
      "coding": [
        {
          "system": "http://terminology.hl7.org/CodeSystem/observation-category",
          "code": "vital-signs",
          "display": "Vital Signs"
        }
      ]
    }
  ],
  "code": {
    "coding": [
      {
        "system": "http://loinc.org",
        "code": "2708-6",
        "display": "Oxygen saturation in Arterial blood"
      }
    ]
  },
  "subject": { "reference": "Patient/example-salim" },
  "effectiveDateTime": "2025-11-04T10:30:00Z",
  "dataAbsentReason": {
    "coding": [
      { "system": "http://terminology.hl7.org/CodeSystem/data-absent-reason", "code": "unknown" }
    ]
  }
}

Oxygen saturation is a vital sign, so the vital-signs category is still required even when the value itself is absent - dropping the result does not drop the category. See Missing & suppressed data for choosing the right absence mechanism.

For example API calls and a sample payload, see the Quick Start at the bottom of this page.

• Key Elements Table
• Differential Table
• Snapshot Table
• Statistics/References
• All

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation	C	0..*	Observation(5.0.0)	Measurements and simple assertions Constraints: obs-6, obs-7, obs-8
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
contained		0..*	Resource	Contained, inline Resources
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored Constraints: ext-1
identifier	SΣ	0..*	Identifier	Business Identifier for observation
instantiates[x]	SΣ	0..1	canonical(ObservationDefinition), Reference(ObservationDefinition)	Instantiates FHIR ObservationDefinition
basedOn	SΣ	0..1	Reference(CarePlan | MedicationRequest | ServiceRequest)	Fulfills plan, proposal or order
triggeredBy	S	0..*	BackboneElement	Triggering observation(s)
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
observation	Σ	1..1	Reference(UZ Core Observation(0.5.0))	Triggering observation
type	Σ	1..1	code	reflex | repeat | re-run Binding: TriggeredByTypeVS (0.5.0) (required)
reason	S	0..1	string	Reason that the observation was triggered
partOf	SΣ	0..*	Reference(MedicationAdministration | MedicationDispense | UZ Core Procedure(0.5.0) | UZ Core Immunization(0.5.0) | ImagingStudy)	Part of referenced event
status	?!SΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatusVS (0.5.0) (required)
category	S	0..*	CodeableConcept	Classification of type of observation Binding: ObservationCategoryVS (0.5.0) (required)
code	SΣC	1..1	CodeableConcept	Type of observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
subject	SΣ	0..1	Reference(UZ Core Patient(0.5.0) | UZ Core Location(0.5.0) | UZ Core Organization(0.5.0) | UZ Core Procedure(0.5.0) | UZ Core Practitioner(0.5.0) | Medication)	Who and/or what the observation is about
focus	SΣ	0..*	Reference(Resource)	What the observation is about, when it is not about the subject of record
encounter	SΣ	0..1	Reference(UZ Core Encounter(0.5.0))	Healthcare event during which this observation is made
effective[x]	SΣ	0..1		Clinically relevant time/time-period for observation
effectiveDateTime			dateTime
effectivePeriod			Period
effectiveTiming			Timing
effectiveInstant			instant
issued	SΣ	0..1	instant	Date/Time this version was made available
performer	SΣ	0..*	Reference(UZ Core Practitioner(0.5.0) | UZ Core PractitionerRole(0.5.0) | UZ Core Organization(0.5.0))	Who is responsible for the observation
value[x]	SΣC	0..1		Actual result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
valueAttachment			Attachment
valueReference			Reference(MolecularSequence)
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (required)
note	S	0..*	Annotation	Comments about the observation
bodySite	C	0..1	CodeableConcept	Observed body part Binding: SNOMEDCTBodyStructures (required)
method		0..1	CodeableConcept	How it was done Binding: LabMethodsVS (0.5.0) (required)
specimen	SC	0..1	Reference(UZ Core Specimen(0.5.0))	Specimen used for this observation Constraints: obs-9
device	S	0..1	Reference(Device | DeviceMetric)	A reference to the device that generates the measurements or the device settings for the device
referenceRange	SC	0..*	BackboneElement	Provides guide for interpretation Constraints: obs-3
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
low	SC	0..1	SimpleQuantity(5.0.0)	Low Range, if relevant
high	SC	0..1	SimpleQuantity(5.0.0)	High Range, if relevant
normalValue	S	0..1	CodeableConcept	Normal value, if relevant Binding: ObservationNormalValueVS (0.5.0) (extensible)
type		0..1	CodeableConcept	Reference range qualifier Binding: ReferenceRangeMeaningVS (0.5.0) (preferred)
age	S	0..1	Range	Applicable age range, if relevant
text	SC	0..1	markdown	Text based reference range in an observation
hasMember	SΣ	0..*	Reference(UZ Core Observation(0.5.0) | UZ Core QuestionnaireResponse(0.5.0))	Related resource that belongs to the Observation group
derivedFrom	SΣ	0..*	Reference(DocumentReference | ImagingStudy | UZ Core QuestionnaireResponse(0.5.0) | UZ Core Observation(0.5.0))	Related resource from which the observation is made
component	SΣC	0..*	BackboneElement	Component results
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
code	SΣC	1..1	CodeableConcept	Type of component observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
value[x]	SΣ	0..1		Actual component result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
valueAttachment			Attachment
valueReference			Reference(MolecularSequence)
dataAbsentReason		0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (extensible)
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Observation.triggeredBy.​type	Base	required	Triggered by type	📍0.5.0	This IG
Observation.status	Base	required	Observation status	📍0.5.0	This IG
Observation.category	Base	required	Observation category	📍0.5.0	This IG
Observation.code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.interpretation	Base	required	UZCore observation interpretation	📍0.5.0	This IG
Observation.bodySite	Base	required	SNOMED CT Body Structures	📍5.0.0	FHIR Std.
Observation.method	Base	required	Observation Laboratory methods	📍0.5.0	This IG
Observation.referenceRange.​normalValue	Base	extensible	Observation normal value	📍0.5.0	This IG
Observation.referenceRange.​type	Base	preferred	Reference range meaning	📍0.5.0	This IG
Observation.component.​code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.component.​dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.component.​interpretation	Base	extensible	UZCore observation interpretation	📍0.5.0	This IG

Constraints

Id	Grade	Path(s)	Description	Expression
dom-2	error	Observation	If the resource is contained in another resource, it SHALL NOT contain nested Resources	contained.contained.empty()
dom-3	error	Observation	If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource	contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4	error	Observation	If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated	contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5	error	Observation	If a resource is contained in another resource, it SHALL NOT have a security label	contained.meta.security.empty()
dom-6	best practice	Observation	A resource should have narrative for robust management	text.`div`.exists()
ele-1	error	Observation.implicitRules, Observation.modifierExtension, Observation.identifier, Observation.instantiates[x], Observation.basedOn, Observation.triggeredBy, Observation.triggeredBy.modifierExtension, Observation.triggeredBy.observation, Observation.triggeredBy.type, Observation.triggeredBy.reason, Observation.partOf, Observation.status, Observation.category, Observation.code, Observation.subject, Observation.focus, Observation.encounter, Observation.effective[x], Observation.issued, Observation.performer, Observation.value[x], Observation.dataAbsentReason, Observation.interpretation, Observation.note, Observation.bodySite, Observation.method, Observation.specimen, Observation.device, Observation.referenceRange, Observation.referenceRange.modifierExtension, Observation.referenceRange.low, Observation.referenceRange.high, Observation.referenceRange.normalValue, Observation.referenceRange.type, Observation.referenceRange.age, Observation.referenceRange.text, Observation.hasMember, Observation.derivedFrom, Observation.component, Observation.component.modifierExtension, Observation.component.code, Observation.component.value[x], Observation.component.dataAbsentReason, Observation.component.interpretation	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	Observation.modifierExtension, Observation.triggeredBy.modifierExtension, Observation.referenceRange.modifierExtension, Observation.component.modifierExtension	Must have either extensions or value[x], not both	extension.exists() != value.exists()
obs-3	error	Observation.referenceRange	Must have at least a low or a high or text	low.exists() or high.exists() or text.exists()
obs-6	error	Observation	dataAbsentReason SHALL only be present if Observation.value[x] is not present	dataAbsentReason.empty() or value.empty()
obs-7	error	Observation	If Observation.component.code is the same as Observation.code, then Observation.value SHALL NOT be present (the Observation.component.value[x] holds the value).	value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
obs-8	error	Observation	bodyStructure SHALL only be present if Observation.bodySite is not present	bodySite.exists() implies bodyStructure.empty()
obs-9	error	Observation.specimen	If Observation.specimen is a reference to Group, the group can only have specimens	(reference.resolve().exists() and reference.resolve() is Group) implies reference.resolve().member.entity.resolve().all($this is Specimen)

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation		0..*	Observation(5.0.0)	Measurements and simple assertions
identifier	S	0..*	Identifier	Business Identifier for observation
instantiates[x]	S	0..1	canonical(ObservationDefinition), Reference(ObservationDefinition)	Instantiates FHIR ObservationDefinition
basedOn	S	0..1	Reference(CarePlan | MedicationRequest | ServiceRequest)	Fulfills plan, proposal or order
triggeredBy	S	0..*	BackboneElement	Triggering observation(s)
observation		1..1	Reference(UZ Core Observation(0.5.0))	Triggering observation
type		1..1	code	reflex | repeat | re-run Binding: TriggeredByTypeVS (0.5.0) (required)
reason	S	0..1	string	Reason that the observation was triggered
partOf	S	0..*	Reference(MedicationAdministration | MedicationDispense | UZ Core Procedure(0.5.0) | UZ Core Immunization(0.5.0) | ImagingStudy)	Part of referenced event
status	S	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatusVS (0.5.0) (required)
category	S	0..*	CodeableConcept	Classification of type of observation Binding: ObservationCategoryVS (0.5.0) (required)
code	S	1..1	CodeableConcept	Type of observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
subject	S	0..1	Reference(UZ Core Patient(0.5.0) | UZ Core Location(0.5.0) | UZ Core Organization(0.5.0) | UZ Core Procedure(0.5.0) | UZ Core Practitioner(0.5.0) | Medication)	Who and/or what the observation is about
focus	S	0..*	Reference(Resource)	What the observation is about, when it is not about the subject of record
encounter	S	0..1	Reference(UZ Core Encounter(0.5.0))	Healthcare event during which this observation is made
effective[x]	S	0..1	dateTime, Period, Timing, instant	Clinically relevant time/time-period for observation
issued	S	0..1	instant	Date/Time this version was made available
performer	S	0..*	Reference(UZ Core Practitioner(0.5.0) | UZ Core PractitionerRole(0.5.0) | UZ Core Organization(0.5.0))	Who is responsible for the observation
value[x]	S	0..1	Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period, Attachment, Reference(MolecularSequence)	Actual result
dataAbsentReason	S	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (required)
note	S	0..*	Annotation	Comments about the observation
bodySite		0..1	CodeableConcept	Observed body part Binding: SNOMEDCTBodyStructures (required)
method		0..1	CodeableConcept	How it was done Binding: LabMethodsVS (0.5.0) (required)
specimen	S	0..1	Reference(UZ Core Specimen(0.5.0))	Specimen used for this observation
device	S	0..1	Reference(Device | DeviceMetric)	A reference to the device that generates the measurements or the device settings for the device
referenceRange	S	0..*	BackboneElement	Provides guide for interpretation
low	S	0..1	SimpleQuantity(5.0.0)	Low Range, if relevant
high	S	0..1	SimpleQuantity(5.0.0)	High Range, if relevant
normalValue	S	0..1	CodeableConcept	Normal value, if relevant Binding: ObservationNormalValueVS (0.5.0) (extensible)
type		0..1	CodeableConcept	Reference range qualifier Binding: ReferenceRangeMeaningVS (0.5.0) (preferred)
age	S	0..1	Range	Applicable age range, if relevant
text	S	0..1	markdown	Text based reference range in an observation
hasMember	S	0..*	Reference(UZ Core Observation(0.5.0) | UZ Core QuestionnaireResponse(0.5.0))	Related resource that belongs to the Observation group
derivedFrom	S	0..*	Reference(DocumentReference | ImagingStudy | UZ Core QuestionnaireResponse(0.5.0) | UZ Core Observation(0.5.0))	Related resource from which the observation is made
component	S	0..*	BackboneElement	Component results
code	S	1..1	CodeableConcept	Type of component observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
value[x]	S	0..1	Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period, Attachment, Reference(MolecularSequence)	Actual component result
dataAbsentReason		0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (extensible)
Documentation for this format

Terminology Bindings (Differential)

Path	Status	Usage	ValueSet	Version	Source
Observation.triggeredBy.​type	Base	required	Triggered by type	📍0.5.0	This IG
Observation.status	Base	required	Observation status	📍0.5.0	This IG
Observation.category	Base	required	Observation category	📍0.5.0	This IG
Observation.code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.interpretation	Base	required	UZCore observation interpretation	📍0.5.0	This IG
Observation.bodySite	Base	required	SNOMED CT Body Structures	📍5.0.0	FHIR Std.
Observation.method	Base	required	Observation Laboratory methods	📍0.5.0	This IG
Observation.referenceRange.​normalValue	Base	extensible	Observation normal value	📍0.5.0	This IG
Observation.referenceRange.​type	Base	preferred	Reference range meaning	📍0.5.0	This IG
Observation.component.​code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.component.​dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.component.​interpretation	Base	extensible	UZCore observation interpretation	📍0.5.0	This IG

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation	C	0..*	Observation(5.0.0)	Measurements and simple assertions Constraints: obs-6, obs-7, obs-8
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: AllLanguages (required): IETF language tag for a human language Additional Bindings Purpose CommonLanguages Starter
text		0..1	Narrative	Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations Constraints: ext-1
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored Constraints: ext-1
identifier	SΣ	0..*	Identifier	Business Identifier for observation
instantiates[x]	SΣ	0..1	canonical(ObservationDefinition), Reference(ObservationDefinition)	Instantiates FHIR ObservationDefinition
basedOn	SΣ	0..1	Reference(CarePlan | MedicationRequest | ServiceRequest)	Fulfills plan, proposal or order
triggeredBy	S	0..*	BackboneElement	Triggering observation(s)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Constraints: ext-1
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
observation	Σ	1..1	Reference(UZ Core Observation(0.5.0))	Triggering observation
type	Σ	1..1	code	reflex | repeat | re-run Binding: TriggeredByTypeVS (0.5.0) (required)
reason	S	0..1	string	Reason that the observation was triggered
partOf	SΣ	0..*	Reference(MedicationAdministration | MedicationDispense | UZ Core Procedure(0.5.0) | UZ Core Immunization(0.5.0) | ImagingStudy)	Part of referenced event
status	?!SΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatusVS (0.5.0) (required)
category	S	0..*	CodeableConcept	Classification of type of observation Binding: ObservationCategoryVS (0.5.0) (required)
code	SΣC	1..1	CodeableConcept	Type of observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
subject	SΣ	0..1	Reference(UZ Core Patient(0.5.0) | UZ Core Location(0.5.0) | UZ Core Organization(0.5.0) | UZ Core Procedure(0.5.0) | UZ Core Practitioner(0.5.0) | Medication)	Who and/or what the observation is about
focus	SΣ	0..*	Reference(Resource)	What the observation is about, when it is not about the subject of record
encounter	SΣ	0..1	Reference(UZ Core Encounter(0.5.0))	Healthcare event during which this observation is made
effective[x]	SΣ	0..1		Clinically relevant time/time-period for observation
effectiveDateTime			dateTime
effectivePeriod			Period
effectiveTiming			Timing
effectiveInstant			instant
issued	SΣ	0..1	instant	Date/Time this version was made available
performer	SΣ	0..*	Reference(UZ Core Practitioner(0.5.0) | UZ Core PractitionerRole(0.5.0) | UZ Core Organization(0.5.0))	Who is responsible for the observation
value[x]	SΣC	0..1		Actual result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
valueAttachment			Attachment
valueReference			Reference(MolecularSequence)
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (required)
note	S	0..*	Annotation	Comments about the observation
bodySite	C	0..1	CodeableConcept	Observed body part Binding: SNOMEDCTBodyStructures (required)
bodyStructure	C	0..1	Reference(BodyStructure)	Observed body structure
method		0..1	CodeableConcept	How it was done Binding: LabMethodsVS (0.5.0) (required)
specimen	SC	0..1	Reference(UZ Core Specimen(0.5.0))	Specimen used for this observation Constraints: obs-9
device	S	0..1	Reference(Device | DeviceMetric)	A reference to the device that generates the measurements or the device settings for the device
referenceRange	SC	0..*	BackboneElement	Provides guide for interpretation Constraints: obs-3
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Constraints: ext-1
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
low	SC	0..1	SimpleQuantity(5.0.0)	Low Range, if relevant
high	SC	0..1	SimpleQuantity(5.0.0)	High Range, if relevant
normalValue	S	0..1	CodeableConcept	Normal value, if relevant Binding: ObservationNormalValueVS (0.5.0) (extensible)
type		0..1	CodeableConcept	Reference range qualifier Binding: ReferenceRangeMeaningVS (0.5.0) (preferred)
appliesTo		0..*	CodeableConcept	Reference range population Binding: ObservationReferenceRangeAppliesToCodes (example): Codes identifying the population the reference range applies to.
age	S	0..1	Range	Applicable age range, if relevant
text	SC	0..1	markdown	Text based reference range in an observation
hasMember	SΣ	0..*	Reference(UZ Core Observation(0.5.0) | UZ Core QuestionnaireResponse(0.5.0))	Related resource that belongs to the Observation group
derivedFrom	SΣ	0..*	Reference(DocumentReference | ImagingStudy | UZ Core QuestionnaireResponse(0.5.0) | UZ Core Observation(0.5.0))	Related resource from which the observation is made
component	SΣC	0..*	BackboneElement	Component results
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Constraints: ext-1
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
code	SΣC	1..1	CodeableConcept	Type of component observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
value[x]	SΣ	0..1		Actual component result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
valueAttachment			Attachment
valueReference			Reference(MolecularSequence)
dataAbsentReason		0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (extensible)
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Observation.language	Base	required	All Languages	📍5.0.0	FHIR Std.
Observation.triggeredBy.​type	Base	required	Triggered by type	📍0.5.0	This IG
Observation.status	Base	required	Observation status	📍0.5.0	This IG
Observation.category	Base	required	Observation category	📍0.5.0	This IG
Observation.code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.interpretation	Base	required	UZCore observation interpretation	📍0.5.0	This IG
Observation.bodySite	Base	required	SNOMED CT Body Structures	📍5.0.0	FHIR Std.
Observation.method	Base	required	Observation Laboratory methods	📍0.5.0	This IG
Observation.referenceRange.​normalValue	Base	extensible	Observation normal value	📍0.5.0	This IG
Observation.referenceRange.​type	Base	preferred	Reference range meaning	📍0.5.0	This IG
Observation.referenceRange.​appliesTo	Base	example	Observation Reference Range Applies To Codes	📍5.0.0	FHIR Std.
Observation.component.​code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.component.​dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.component.​interpretation	Base	extensible	UZCore observation interpretation	📍0.5.0	This IG

Constraints

Id	Grade	Path(s)	Description	Expression
dom-2	error	Observation	If the resource is contained in another resource, it SHALL NOT contain nested Resources	contained.contained.empty()
dom-3	error	Observation	If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource	contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4	error	Observation	If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated	contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5	error	Observation	If a resource is contained in another resource, it SHALL NOT have a security label	contained.meta.security.empty()
dom-6	best practice	Observation	A resource should have narrative for robust management	text.`div`.exists()
ele-1	error	Observation.meta, Observation.implicitRules, Observation.language, Observation.text, Observation.extension, Observation.modifierExtension, Observation.identifier, Observation.instantiates[x], Observation.basedOn, Observation.triggeredBy, Observation.triggeredBy.extension, Observation.triggeredBy.modifierExtension, Observation.triggeredBy.observation, Observation.triggeredBy.type, Observation.triggeredBy.reason, Observation.partOf, Observation.status, Observation.category, Observation.code, Observation.subject, Observation.focus, Observation.encounter, Observation.effective[x], Observation.issued, Observation.performer, Observation.value[x], Observation.dataAbsentReason, Observation.interpretation, Observation.note, Observation.bodySite, Observation.bodyStructure, Observation.method, Observation.specimen, Observation.device, Observation.referenceRange, Observation.referenceRange.extension, Observation.referenceRange.modifierExtension, Observation.referenceRange.low, Observation.referenceRange.high, Observation.referenceRange.normalValue, Observation.referenceRange.type, Observation.referenceRange.appliesTo, Observation.referenceRange.age, Observation.referenceRange.text, Observation.hasMember, Observation.derivedFrom, Observation.component, Observation.component.extension, Observation.component.modifierExtension, Observation.component.code, Observation.component.value[x], Observation.component.dataAbsentReason, Observation.component.interpretation, Observation.component.referenceRange	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	Observation.extension, Observation.modifierExtension, Observation.triggeredBy.extension, Observation.triggeredBy.modifierExtension, Observation.referenceRange.extension, Observation.referenceRange.modifierExtension, Observation.component.extension, Observation.component.modifierExtension	Must have either extensions or value[x], not both	extension.exists() != value.exists()
obs-3	error	Observation.referenceRange	Must have at least a low or a high or text	low.exists() or high.exists() or text.exists()
obs-6	error	Observation	dataAbsentReason SHALL only be present if Observation.value[x] is not present	dataAbsentReason.empty() or value.empty()
obs-7	error	Observation	If Observation.component.code is the same as Observation.code, then Observation.value SHALL NOT be present (the Observation.component.value[x] holds the value).	value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
obs-8	error	Observation	bodyStructure SHALL only be present if Observation.bodySite is not present	bodySite.exists() implies bodyStructure.empty()
obs-9	error	Observation.specimen	If Observation.specimen is a reference to Group, the group can only have specimens	(reference.resolve().exists() and reference.resolve() is Group) implies reference.resolve().member.entity.resolve().all($this is Specimen)

Key Elements View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation	C	0..*	Observation(5.0.0)	Measurements and simple assertions Constraints: obs-6, obs-7, obs-8
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
contained		0..*	Resource	Contained, inline Resources
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored Constraints: ext-1
identifier	SΣ	0..*	Identifier	Business Identifier for observation
instantiates[x]	SΣ	0..1	canonical(ObservationDefinition), Reference(ObservationDefinition)	Instantiates FHIR ObservationDefinition
basedOn	SΣ	0..1	Reference(CarePlan | MedicationRequest | ServiceRequest)	Fulfills plan, proposal or order
triggeredBy	S	0..*	BackboneElement	Triggering observation(s)
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
observation	Σ	1..1	Reference(UZ Core Observation(0.5.0))	Triggering observation
type	Σ	1..1	code	reflex | repeat | re-run Binding: TriggeredByTypeVS (0.5.0) (required)
reason	S	0..1	string	Reason that the observation was triggered
partOf	SΣ	0..*	Reference(MedicationAdministration | MedicationDispense | UZ Core Procedure(0.5.0) | UZ Core Immunization(0.5.0) | ImagingStudy)	Part of referenced event
status	?!SΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatusVS (0.5.0) (required)
category	S	0..*	CodeableConcept	Classification of type of observation Binding: ObservationCategoryVS (0.5.0) (required)
code	SΣC	1..1	CodeableConcept	Type of observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
subject	SΣ	0..1	Reference(UZ Core Patient(0.5.0) | UZ Core Location(0.5.0) | UZ Core Organization(0.5.0) | UZ Core Procedure(0.5.0) | UZ Core Practitioner(0.5.0) | Medication)	Who and/or what the observation is about
focus	SΣ	0..*	Reference(Resource)	What the observation is about, when it is not about the subject of record
encounter	SΣ	0..1	Reference(UZ Core Encounter(0.5.0))	Healthcare event during which this observation is made
effective[x]	SΣ	0..1		Clinically relevant time/time-period for observation
effectiveDateTime			dateTime
effectivePeriod			Period
effectiveTiming			Timing
effectiveInstant			instant
issued	SΣ	0..1	instant	Date/Time this version was made available
performer	SΣ	0..*	Reference(UZ Core Practitioner(0.5.0) | UZ Core PractitionerRole(0.5.0) | UZ Core Organization(0.5.0))	Who is responsible for the observation
value[x]	SΣC	0..1		Actual result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
valueAttachment			Attachment
valueReference			Reference(MolecularSequence)
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (required)
note	S	0..*	Annotation	Comments about the observation
bodySite	C	0..1	CodeableConcept	Observed body part Binding: SNOMEDCTBodyStructures (required)
method		0..1	CodeableConcept	How it was done Binding: LabMethodsVS (0.5.0) (required)
specimen	SC	0..1	Reference(UZ Core Specimen(0.5.0))	Specimen used for this observation Constraints: obs-9
device	S	0..1	Reference(Device | DeviceMetric)	A reference to the device that generates the measurements or the device settings for the device
referenceRange	SC	0..*	BackboneElement	Provides guide for interpretation Constraints: obs-3
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
low	SC	0..1	SimpleQuantity(5.0.0)	Low Range, if relevant
high	SC	0..1	SimpleQuantity(5.0.0)	High Range, if relevant
normalValue	S	0..1	CodeableConcept	Normal value, if relevant Binding: ObservationNormalValueVS (0.5.0) (extensible)
type		0..1	CodeableConcept	Reference range qualifier Binding: ReferenceRangeMeaningVS (0.5.0) (preferred)
age	S	0..1	Range	Applicable age range, if relevant
text	SC	0..1	markdown	Text based reference range in an observation
hasMember	SΣ	0..*	Reference(UZ Core Observation(0.5.0) | UZ Core QuestionnaireResponse(0.5.0))	Related resource that belongs to the Observation group
derivedFrom	SΣ	0..*	Reference(DocumentReference | ImagingStudy | UZ Core QuestionnaireResponse(0.5.0) | UZ Core Observation(0.5.0))	Related resource from which the observation is made
component	SΣC	0..*	BackboneElement	Component results
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
code	SΣC	1..1	CodeableConcept	Type of component observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
value[x]	SΣ	0..1		Actual component result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
valueAttachment			Attachment
valueReference			Reference(MolecularSequence)
dataAbsentReason		0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (extensible)
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Observation.triggeredBy.​type	Base	required	Triggered by type	📍0.5.0	This IG
Observation.status	Base	required	Observation status	📍0.5.0	This IG
Observation.category	Base	required	Observation category	📍0.5.0	This IG
Observation.code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.interpretation	Base	required	UZCore observation interpretation	📍0.5.0	This IG
Observation.bodySite	Base	required	SNOMED CT Body Structures	📍5.0.0	FHIR Std.
Observation.method	Base	required	Observation Laboratory methods	📍0.5.0	This IG
Observation.referenceRange.​normalValue	Base	extensible	Observation normal value	📍0.5.0	This IG
Observation.referenceRange.​type	Base	preferred	Reference range meaning	📍0.5.0	This IG
Observation.component.​code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.component.​dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.component.​interpretation	Base	extensible	UZCore observation interpretation	📍0.5.0	This IG

Constraints

Id	Grade	Path(s)	Description	Expression
dom-2	error	Observation	If the resource is contained in another resource, it SHALL NOT contain nested Resources	contained.contained.empty()
dom-3	error	Observation	If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource	contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4	error	Observation	If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated	contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5	error	Observation	If a resource is contained in another resource, it SHALL NOT have a security label	contained.meta.security.empty()
dom-6	best practice	Observation	A resource should have narrative for robust management	text.`div`.exists()
ele-1	error	Observation.implicitRules, Observation.modifierExtension, Observation.identifier, Observation.instantiates[x], Observation.basedOn, Observation.triggeredBy, Observation.triggeredBy.modifierExtension, Observation.triggeredBy.observation, Observation.triggeredBy.type, Observation.triggeredBy.reason, Observation.partOf, Observation.status, Observation.category, Observation.code, Observation.subject, Observation.focus, Observation.encounter, Observation.effective[x], Observation.issued, Observation.performer, Observation.value[x], Observation.dataAbsentReason, Observation.interpretation, Observation.note, Observation.bodySite, Observation.method, Observation.specimen, Observation.device, Observation.referenceRange, Observation.referenceRange.modifierExtension, Observation.referenceRange.low, Observation.referenceRange.high, Observation.referenceRange.normalValue, Observation.referenceRange.type, Observation.referenceRange.age, Observation.referenceRange.text, Observation.hasMember, Observation.derivedFrom, Observation.component, Observation.component.modifierExtension, Observation.component.code, Observation.component.value[x], Observation.component.dataAbsentReason, Observation.component.interpretation	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	Observation.modifierExtension, Observation.triggeredBy.modifierExtension, Observation.referenceRange.modifierExtension, Observation.component.modifierExtension	Must have either extensions or value[x], not both	extension.exists() != value.exists()
obs-3	error	Observation.referenceRange	Must have at least a low or a high or text	low.exists() or high.exists() or text.exists()
obs-6	error	Observation	dataAbsentReason SHALL only be present if Observation.value[x] is not present	dataAbsentReason.empty() or value.empty()
obs-7	error	Observation	If Observation.component.code is the same as Observation.code, then Observation.value SHALL NOT be present (the Observation.component.value[x] holds the value).	value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
obs-8	error	Observation	bodyStructure SHALL only be present if Observation.bodySite is not present	bodySite.exists() implies bodyStructure.empty()
obs-9	error	Observation.specimen	If Observation.specimen is a reference to Group, the group can only have specimens	(reference.resolve().exists() and reference.resolve() is Group) implies reference.resolve().member.entity.resolve().all($this is Specimen)

Differential View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation		0..*	Observation(5.0.0)	Measurements and simple assertions
identifier	S	0..*	Identifier	Business Identifier for observation
instantiates[x]	S	0..1	canonical(ObservationDefinition), Reference(ObservationDefinition)	Instantiates FHIR ObservationDefinition
basedOn	S	0..1	Reference(CarePlan | MedicationRequest | ServiceRequest)	Fulfills plan, proposal or order
triggeredBy	S	0..*	BackboneElement	Triggering observation(s)
observation		1..1	Reference(UZ Core Observation(0.5.0))	Triggering observation
type		1..1	code	reflex | repeat | re-run Binding: TriggeredByTypeVS (0.5.0) (required)
reason	S	0..1	string	Reason that the observation was triggered
partOf	S	0..*	Reference(MedicationAdministration | MedicationDispense | UZ Core Procedure(0.5.0) | UZ Core Immunization(0.5.0) | ImagingStudy)	Part of referenced event
status	S	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatusVS (0.5.0) (required)
category	S	0..*	CodeableConcept	Classification of type of observation Binding: ObservationCategoryVS (0.5.0) (required)
code	S	1..1	CodeableConcept	Type of observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
subject	S	0..1	Reference(UZ Core Patient(0.5.0) | UZ Core Location(0.5.0) | UZ Core Organization(0.5.0) | UZ Core Procedure(0.5.0) | UZ Core Practitioner(0.5.0) | Medication)	Who and/or what the observation is about
focus	S	0..*	Reference(Resource)	What the observation is about, when it is not about the subject of record
encounter	S	0..1	Reference(UZ Core Encounter(0.5.0))	Healthcare event during which this observation is made
effective[x]	S	0..1	dateTime, Period, Timing, instant	Clinically relevant time/time-period for observation
issued	S	0..1	instant	Date/Time this version was made available
performer	S	0..*	Reference(UZ Core Practitioner(0.5.0) | UZ Core PractitionerRole(0.5.0) | UZ Core Organization(0.5.0))	Who is responsible for the observation
value[x]	S	0..1	Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period, Attachment, Reference(MolecularSequence)	Actual result
dataAbsentReason	S	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (required)
note	S	0..*	Annotation	Comments about the observation
bodySite		0..1	CodeableConcept	Observed body part Binding: SNOMEDCTBodyStructures (required)
method		0..1	CodeableConcept	How it was done Binding: LabMethodsVS (0.5.0) (required)
specimen	S	0..1	Reference(UZ Core Specimen(0.5.0))	Specimen used for this observation
device	S	0..1	Reference(Device | DeviceMetric)	A reference to the device that generates the measurements or the device settings for the device
referenceRange	S	0..*	BackboneElement	Provides guide for interpretation
low	S	0..1	SimpleQuantity(5.0.0)	Low Range, if relevant
high	S	0..1	SimpleQuantity(5.0.0)	High Range, if relevant
normalValue	S	0..1	CodeableConcept	Normal value, if relevant Binding: ObservationNormalValueVS (0.5.0) (extensible)
type		0..1	CodeableConcept	Reference range qualifier Binding: ReferenceRangeMeaningVS (0.5.0) (preferred)
age	S	0..1	Range	Applicable age range, if relevant
text	S	0..1	markdown	Text based reference range in an observation
hasMember	S	0..*	Reference(UZ Core Observation(0.5.0) | UZ Core QuestionnaireResponse(0.5.0))	Related resource that belongs to the Observation group
derivedFrom	S	0..*	Reference(DocumentReference | ImagingStudy | UZ Core QuestionnaireResponse(0.5.0) | UZ Core Observation(0.5.0))	Related resource from which the observation is made
component	S	0..*	BackboneElement	Component results
code	S	1..1	CodeableConcept	Type of component observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
value[x]	S	0..1	Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, SampledData, time, dateTime, Period, Attachment, Reference(MolecularSequence)	Actual component result
dataAbsentReason		0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (extensible)
Documentation for this format

Terminology Bindings (Differential)

Path	Status	Usage	ValueSet	Version	Source
Observation.triggeredBy.​type	Base	required	Triggered by type	📍0.5.0	This IG
Observation.status	Base	required	Observation status	📍0.5.0	This IG
Observation.category	Base	required	Observation category	📍0.5.0	This IG
Observation.code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.interpretation	Base	required	UZCore observation interpretation	📍0.5.0	This IG
Observation.bodySite	Base	required	SNOMED CT Body Structures	📍5.0.0	FHIR Std.
Observation.method	Base	required	Observation Laboratory methods	📍0.5.0	This IG
Observation.referenceRange.​normalValue	Base	extensible	Observation normal value	📍0.5.0	This IG
Observation.referenceRange.​type	Base	preferred	Reference range meaning	📍0.5.0	This IG
Observation.component.​code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.component.​dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.component.​interpretation	Base	extensible	UZCore observation interpretation	📍0.5.0	This IG

Snapshot ViewView

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Observation	C	0..*	Observation(5.0.0)	Measurements and simple assertions Constraints: obs-6, obs-7, obs-8
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: AllLanguages (required): IETF language tag for a human language Additional Bindings Purpose CommonLanguages Starter
text		0..1	Narrative	Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations Constraints: ext-1
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored Constraints: ext-1
identifier	SΣ	0..*	Identifier	Business Identifier for observation
instantiates[x]	SΣ	0..1	canonical(ObservationDefinition), Reference(ObservationDefinition)	Instantiates FHIR ObservationDefinition
basedOn	SΣ	0..1	Reference(CarePlan | MedicationRequest | ServiceRequest)	Fulfills plan, proposal or order
triggeredBy	S	0..*	BackboneElement	Triggering observation(s)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Constraints: ext-1
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
observation	Σ	1..1	Reference(UZ Core Observation(0.5.0))	Triggering observation
type	Σ	1..1	code	reflex | repeat | re-run Binding: TriggeredByTypeVS (0.5.0) (required)
reason	S	0..1	string	Reason that the observation was triggered
partOf	SΣ	0..*	Reference(MedicationAdministration | MedicationDispense | UZ Core Procedure(0.5.0) | UZ Core Immunization(0.5.0) | ImagingStudy)	Part of referenced event
status	?!SΣ	1..1	code	registered | preliminary | final | amended + Binding: ObservationStatusVS (0.5.0) (required)
category	S	0..*	CodeableConcept	Classification of type of observation Binding: ObservationCategoryVS (0.5.0) (required)
code	SΣC	1..1	CodeableConcept	Type of observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
subject	SΣ	0..1	Reference(UZ Core Patient(0.5.0) | UZ Core Location(0.5.0) | UZ Core Organization(0.5.0) | UZ Core Procedure(0.5.0) | UZ Core Practitioner(0.5.0) | Medication)	Who and/or what the observation is about
focus	SΣ	0..*	Reference(Resource)	What the observation is about, when it is not about the subject of record
encounter	SΣ	0..1	Reference(UZ Core Encounter(0.5.0))	Healthcare event during which this observation is made
effective[x]	SΣ	0..1		Clinically relevant time/time-period for observation
effectiveDateTime			dateTime
effectivePeriod			Period
effectiveTiming			Timing
effectiveInstant			instant
issued	SΣ	0..1	instant	Date/Time this version was made available
performer	SΣ	0..*	Reference(UZ Core Practitioner(0.5.0) | UZ Core PractitionerRole(0.5.0) | UZ Core Organization(0.5.0))	Who is responsible for the observation
value[x]	SΣC	0..1		Actual result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
valueAttachment			Attachment
valueReference			Reference(MolecularSequence)
dataAbsentReason	SC	0..1	CodeableConcept	Why the result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (required)
note	S	0..*	Annotation	Comments about the observation
bodySite	C	0..1	CodeableConcept	Observed body part Binding: SNOMEDCTBodyStructures (required)
bodyStructure	C	0..1	Reference(BodyStructure)	Observed body structure
method		0..1	CodeableConcept	How it was done Binding: LabMethodsVS (0.5.0) (required)
specimen	SC	0..1	Reference(UZ Core Specimen(0.5.0))	Specimen used for this observation Constraints: obs-9
device	S	0..1	Reference(Device | DeviceMetric)	A reference to the device that generates the measurements or the device settings for the device
referenceRange	SC	0..*	BackboneElement	Provides guide for interpretation Constraints: obs-3
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Constraints: ext-1
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
low	SC	0..1	SimpleQuantity(5.0.0)	Low Range, if relevant
high	SC	0..1	SimpleQuantity(5.0.0)	High Range, if relevant
normalValue	S	0..1	CodeableConcept	Normal value, if relevant Binding: ObservationNormalValueVS (0.5.0) (extensible)
type		0..1	CodeableConcept	Reference range qualifier Binding: ReferenceRangeMeaningVS (0.5.0) (preferred)
appliesTo		0..*	CodeableConcept	Reference range population Binding: ObservationReferenceRangeAppliesToCodes (example): Codes identifying the population the reference range applies to.
age	S	0..1	Range	Applicable age range, if relevant
text	SC	0..1	markdown	Text based reference range in an observation
hasMember	SΣ	0..*	Reference(UZ Core Observation(0.5.0) | UZ Core QuestionnaireResponse(0.5.0))	Related resource that belongs to the Observation group
derivedFrom	SΣ	0..*	Reference(DocumentReference | ImagingStudy | UZ Core QuestionnaireResponse(0.5.0) | UZ Core Observation(0.5.0))	Related resource from which the observation is made
component	SΣC	0..*	BackboneElement	Component results
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations Constraints: ext-1
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized Constraints: ext-1
code	SΣC	1..1	CodeableConcept	Type of component observation (code / type) Binding: ObservationCodesVS (0.5.0) (preferred)
value[x]	SΣ	0..1		Actual component result
valueQuantity			Quantity
valueCodeableConcept			CodeableConcept
valueString			string
valueBoolean			boolean
valueInteger			integer
valueRange			Range
valueRatio			Ratio
valueSampledData			SampledData
valueTime			time
valueDateTime			dateTime
valuePeriod			Period
valueAttachment			Attachment
valueReference			Reference(MolecularSequence)
dataAbsentReason		0..1	CodeableConcept	Why the component result is missing Binding: DataAbsentReasonVS (0.5.0) (extensible)
interpretation		0..*	CodeableConcept	High, low, normal, etc Binding: ObservationInterpretationVS (0.5.0) (extensible)
referenceRange		0..*	See referenceRange (Observation)	Provides guide for interpretation of component result
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Observation.language	Base	required	All Languages	📍5.0.0	FHIR Std.
Observation.triggeredBy.​type	Base	required	Triggered by type	📍0.5.0	This IG
Observation.status	Base	required	Observation status	📍0.5.0	This IG
Observation.category	Base	required	Observation category	📍0.5.0	This IG
Observation.code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.interpretation	Base	required	UZCore observation interpretation	📍0.5.0	This IG
Observation.bodySite	Base	required	SNOMED CT Body Structures	📍5.0.0	FHIR Std.
Observation.method	Base	required	Observation Laboratory methods	📍0.5.0	This IG
Observation.referenceRange.​normalValue	Base	extensible	Observation normal value	📍0.5.0	This IG
Observation.referenceRange.​type	Base	preferred	Reference range meaning	📍0.5.0	This IG
Observation.referenceRange.​appliesTo	Base	example	Observation Reference Range Applies To Codes	📍5.0.0	FHIR Std.
Observation.component.​code	Base	preferred	Observation codes	📍0.5.0	This IG
Observation.component.​dataAbsentReason	Base	extensible	UZCore Data Absent Reason	📍0.5.0	This IG
Observation.component.​interpretation	Base	extensible	UZCore observation interpretation	📍0.5.0	This IG

Constraints

Id	Grade	Path(s)	Description	Expression
dom-2	error	Observation	If the resource is contained in another resource, it SHALL NOT contain nested Resources	contained.contained.empty()
dom-3	error	Observation	If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource	contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4	error	Observation	If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated	contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5	error	Observation	If a resource is contained in another resource, it SHALL NOT have a security label	contained.meta.security.empty()
dom-6	best practice	Observation	A resource should have narrative for robust management	text.`div`.exists()
ele-1	error	Observation.meta, Observation.implicitRules, Observation.language, Observation.text, Observation.extension, Observation.modifierExtension, Observation.identifier, Observation.instantiates[x], Observation.basedOn, Observation.triggeredBy, Observation.triggeredBy.extension, Observation.triggeredBy.modifierExtension, Observation.triggeredBy.observation, Observation.triggeredBy.type, Observation.triggeredBy.reason, Observation.partOf, Observation.status, Observation.category, Observation.code, Observation.subject, Observation.focus, Observation.encounter, Observation.effective[x], Observation.issued, Observation.performer, Observation.value[x], Observation.dataAbsentReason, Observation.interpretation, Observation.note, Observation.bodySite, Observation.bodyStructure, Observation.method, Observation.specimen, Observation.device, Observation.referenceRange, Observation.referenceRange.extension, Observation.referenceRange.modifierExtension, Observation.referenceRange.low, Observation.referenceRange.high, Observation.referenceRange.normalValue, Observation.referenceRange.type, Observation.referenceRange.appliesTo, Observation.referenceRange.age, Observation.referenceRange.text, Observation.hasMember, Observation.derivedFrom, Observation.component, Observation.component.extension, Observation.component.modifierExtension, Observation.component.code, Observation.component.value[x], Observation.component.dataAbsentReason, Observation.component.interpretation, Observation.component.referenceRange	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	Observation.extension, Observation.modifierExtension, Observation.triggeredBy.extension, Observation.triggeredBy.modifierExtension, Observation.referenceRange.extension, Observation.referenceRange.modifierExtension, Observation.component.extension, Observation.component.modifierExtension	Must have either extensions or value[x], not both	extension.exists() != value.exists()
obs-3	error	Observation.referenceRange	Must have at least a low or a high or text	low.exists() or high.exists() or text.exists()
obs-6	error	Observation	dataAbsentReason SHALL only be present if Observation.value[x] is not present	dataAbsentReason.empty() or value.empty()
obs-7	error	Observation	If Observation.component.code is the same as Observation.code, then Observation.value SHALL NOT be present (the Observation.component.value[x] holds the value).	value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
obs-8	error	Observation	bodyStructure SHALL only be present if Observation.bodySite is not present	bodySite.exists() implies bodyStructure.empty()
obs-9	error	Observation.specimen	If Observation.specimen is a reference to Group, the group can only have specimens	(reference.resolve().exists() and reference.resolve() is Group) implies reference.resolve().member.entity.resolve().all($this is Specimen)

Summary

Must-Support: 31 elements

Structures

This structure refers to these other structures:

• CarePlan (http://hl7.org/fhir/StructureDefinition/CarePlan|5.0.0)
• MedicationRequest (http://hl7.org/fhir/StructureDefinition/MedicationRequest|5.0.0)
• ServiceRequest (http://hl7.org/fhir/StructureDefinition/ServiceRequest|5.0.0)
• UZ Core Observation (https://dhp.uz/fhir/core/StructureDefinition/uz-core-observation|0.5.0)
• MedicationAdministration (http://hl7.org/fhir/StructureDefinition/MedicationAdministration|5.0.0)
• MedicationDispense (http://hl7.org/fhir/StructureDefinition/MedicationDispense|5.0.0)
• UZ Core Procedure (https://dhp.uz/fhir/core/StructureDefinition/uz-core-procedure|0.5.0)
• UZ Core Immunization (https://dhp.uz/fhir/core/StructureDefinition/uz-core-immunization|0.5.0)
• ImagingStudy (http://hl7.org/fhir/StructureDefinition/ImagingStudy|5.0.0)
• UZ Core Patient (https://dhp.uz/fhir/core/StructureDefinition/uz-core-patient|0.5.0)
• UZ Core Location (https://dhp.uz/fhir/core/StructureDefinition/uz-core-location|0.5.0)
• UZ Core Organization (https://dhp.uz/fhir/core/StructureDefinition/uz-core-organization|0.5.0)
• UZ Core Practitioner (https://dhp.uz/fhir/core/StructureDefinition/uz-core-practitioner|0.5.0)
• Medication (http://hl7.org/fhir/StructureDefinition/Medication|5.0.0)
• UZ Core Encounter (https://dhp.uz/fhir/core/StructureDefinition/uz-core-encounter|0.5.0)
• UZ Core PractitionerRole (https://dhp.uz/fhir/core/StructureDefinition/uz-core-practitioner-role|0.5.0)
• UZ Core Specimen (https://dhp.uz/fhir/core/StructureDefinition/uz-core-specimen|0.5.0)
• UZ Core QuestionnaireResponse (https://dhp.uz/fhir/core/StructureDefinition/uz-core-questionnaire-response|0.5.0)
• DocumentReference (http://hl7.org/fhir/StructureDefinition/DocumentReference|5.0.0)