HL7 FHIR Implementation Guide: Transversal Clinical Core
1.0.1 - STU1

HL7 FHIR Implementation Guide: Transversal Clinical Core, published by eHealth Platform. This guide is not an authorized publication; it is the continuous build for version 1.0.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-be/core-clinical/ and changes regularly. See the Directory of published versions

## Logical Model: BeModelObservation - Detailed Descriptions

Active as of 2025-10-16

Definitions for the be-model-observation logical model.

- Key Elements Table
- Differential Elements Table
- Snapshot Elements Table

Guidance on how to interpret the contents of this table can be foundhere

0. be-model-observation
Definition | Observation logical model
Short | BeObservation Model
Control | 0..*
Is Modifier | false
Logical Model | Instances of this logical model are not marked to be the target of a Reference
2. be-model-observation.identifier
Definition | Unique identifier for the observation
Short | Unique identifier for the observation
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..*
Type | Identifier
4. be-model-observation.recordedDate
Definition | Date when the observation was recorded
Short | Date when the observation was recorded
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
6. be-model-observation.observationDate[x]
Definition | Date or period of the observation
Short | Date or period of the observation
Control | 1..1
Type | Choice of: dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
8. be-model-observation.recorder
Definition | Person, organisation or device that recorded the observation
Short | Person, organisation or device that recorded the observation
Control | 1..1
Type | Reference
10. be-model-observation.performer
Definition | The professional that performed the observation
Short | The professional that performed the observation
Control | 0..1
Type | Reference
12. be-model-observation.patient
Definition | The patient that this observation is about
Short | The patient that this observation is about
Control | 1..1
Type | Reference
14. be-model-observation.request
Definition | The request that this observation is fulfilling
Short | The request that this observation is fulfilling
Control | 0..1
Type | Reference
16. be-model-observation.partOfProcedure
Definition | Part of referenced procedure
Short | Part of referenced procedure
Control | 0..*
Type | Reference
18. be-model-observation.specimen
Definition | The specimen that was used when this observation was made
Short | The specimen that was used when this observation was made
Control | 0..1
Type | Reference
20. be-model-observation.device
Definition | The device used to generate the observation data
Short | The device used to generate the observation data
Control | 0..1
Type | Reference
22. be-model-observation.category
Definition | A code that classifies the general type of observation being made
Short | A code that classifies the general type of observation being made
Control | 0..*
Type | CodeableConcept
24. be-model-observation.code
Definition | Describes what was observed. Sometimes this is called the observation 'name'
Short | Describes what was observed. Sometimes this is called the observation 'name'
Control | 1..1
Type | CodeableConcept
26. be-model-observation.value[x]
Definition | The value of the observation - typically a code, an amount or a date
Short | The value of the observation - typically a code, an amount or a date
Control | 0..1
Type | Choice of: Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, time, dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
28. be-model-observation.component
Definition | Some observations have multiple component observations
Short | Some observations have multiple component observations
Control | 0..*
Type | BackboneElement
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
30. be-model-observation.component.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
32. be-model-observation.component.extension
Definition | May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing | This element introduces a set of slices on `be-model-observation.component.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
34. be-model-observation.component.modifierExtension
Definition | May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
36. be-model-observation.component.code
Definition | Describes what was observed.
Short | Describes what was observed.
Control | 1..1
Type | CodeableConcept
38. be-model-observation.component.value[x]
Definition | The value of the component observation - typically a code, an amount or a date
Short | The value of the component observation - typically a code, an amount or a date
Control | 0..1
Type | Choice of: Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, time, dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
40. be-model-observation.status
Definition | The status of the result value.
Short | The status of the result value.
Control | 1..1
Type | code
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
42. be-model-observation.interpretation
Definition | A categorical assessment of an observation value
Short | A categorical assessment of an observation value
Control | 0..*
Type | CodeableConcept
44. be-model-observation.referenceRange
Definition | Guidance on how to interpret the value by comparison to a normal or recommended range
Short | Guidance on how to interpret the value by comparison to a normal or recommended range
Control | 0..*
Type | BackboneElement
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
46. be-model-observation.referenceRange.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
48. be-model-observation.referenceRange.extension
Definition | May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing | This element introduces a set of slices on `be-model-observation.referenceRange.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
50. be-model-observation.referenceRange.modifierExtension
Definition | May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
52. be-model-observation.referenceRange.low
Definition | Low Range, if relevant
Short | Low Range, if relevant
Control | 0..1
Type | Quantity
54. be-model-observation.referenceRange.high
Definition | High Range, if relevant
Short | High Range, if relevant
Control | 0..1
Type | Quantity
56. be-model-observation.bodySite
Definition | The site on the subject's body where the observation was made (i.e. the target site)
Short | The site on the subject's body where the observation was made (i.e. the target site)
Control | 0..1
Type | https://www.ehealth.fgov.be/standards/fhir/core-clinical/StructureDefinition/be-model-bodysite
58. be-model-observation.certainty
Definition | A subjective assessment of the quality of the observation
Short | A subjective assessment of the quality of the observation
Control | 0..1
Type | CodeableConcept
60. be-model-observation.note
Definition | Comments about the observation or the results
Short | Comments about the observation or the results
Control | 0..*
Type | Annotation

Guidance on how to interpret the contents of this table can be foundhere

0. be-model-observation
Definition | Observation logical model
Short | BeObservation Model
Logical Model | Instances of this logical model are not marked to be the target of a Reference
2. be-model-observation.identifier
Definition | Unique identifier for the observation
Short | Unique identifier for the observation
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..*
Type | Identifier
4. be-model-observation.recordedDate
Definition | Date when the observation was recorded
Short | Date when the observation was recorded
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
6. be-model-observation.observationDate[x]
Definition | Date or period of the observation
Short | Date or period of the observation
Control | 1..1
Type | Choice of: dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
8. be-model-observation.recorder
Definition | Person, organisation or device that recorded the observation
Short | Person, organisation or device that recorded the observation
Control | 1..1
Type | Reference
10. be-model-observation.performer
Definition | The professional that performed the observation
Short | The professional that performed the observation
Control | 0..1
Type | Reference
12. be-model-observation.patient
Definition | The patient that this observation is about
Short | The patient that this observation is about
Control | 1..1
Type | Reference
14. be-model-observation.request
Definition | The request that this observation is fulfilling
Short | The request that this observation is fulfilling
Control | 0..1
Type | Reference
16. be-model-observation.partOfProcedure
Definition | Part of referenced procedure
Short | Part of referenced procedure
Control | 0..*
Type | Reference
18. be-model-observation.specimen
Definition | The specimen that was used when this observation was made
Short | The specimen that was used when this observation was made
Control | 0..1
Type | Reference
20. be-model-observation.device
Definition | The device used to generate the observation data
Short | The device used to generate the observation data
Control | 0..1
Type | Reference
22. be-model-observation.category
Definition | A code that classifies the general type of observation being made
Short | A code that classifies the general type of observation being made
Control | 0..*
Type | CodeableConcept
24. be-model-observation.code
Definition | Describes what was observed. Sometimes this is called the observation 'name'
Short | Describes what was observed. Sometimes this is called the observation 'name'
Control | 1..1
Type | CodeableConcept
26. be-model-observation.value[x]
Definition | The value of the observation - typically a code, an amount or a date
Short | The value of the observation - typically a code, an amount or a date
Control | 0..1
Type | Choice of: Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, time, dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
28. be-model-observation.component
Definition | Some observations have multiple component observations
Short | Some observations have multiple component observations
Control | 0..*
Type | BackboneElement
30. be-model-observation.component.code
Definition | Describes what was observed.
Short | Describes what was observed.
Control | 1..1
Type | CodeableConcept
32. be-model-observation.component.value[x]
Definition | The value of the component observation - typically a code, an amount or a date
Short | The value of the component observation - typically a code, an amount or a date
Control | 0..1
Type | Choice of: Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, time, dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
34. be-model-observation.status
Definition | The status of the result value.
Short | The status of the result value.
Control | 1..1
Type | code
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
36. be-model-observation.interpretation
Definition | A categorical assessment of an observation value
Short | A categorical assessment of an observation value
Control | 0..*
Type | CodeableConcept
38. be-model-observation.referenceRange
Definition | Guidance on how to interpret the value by comparison to a normal or recommended range
Short | Guidance on how to interpret the value by comparison to a normal or recommended range
Control | 0..*
Type | BackboneElement
40. be-model-observation.referenceRange.low
Definition | Low Range, if relevant
Short | Low Range, if relevant
Control | 0..1
Type | Quantity
42. be-model-observation.referenceRange.high
Definition | High Range, if relevant
Short | High Range, if relevant
Control | 0..1
Type | Quantity
44. be-model-observation.bodySite
Definition | The site on the subject's body where the observation was made (i.e. the target site)
Short | The site on the subject's body where the observation was made (i.e. the target site)
Control | 0..1
Type | https://www.ehealth.fgov.be/standards/fhir/core-clinical/StructureDefinition/be-model-bodysite
46. be-model-observation.certainty
Definition | A subjective assessment of the quality of the observation
Short | A subjective assessment of the quality of the observation
Control | 0..1
Type | CodeableConcept
48. be-model-observation.note
Definition | Comments about the observation or the results
Short | Comments about the observation or the results
Control | 0..*
Type | Annotation

Guidance on how to interpret the contents of this table can be foundhere

0. be-model-observation
Definition | Observation logical model
Short | BeObservation Model
Control | 0..*
Is Modifier | false
Logical Model | Instances of this logical model are not marked to be the target of a Reference
2. be-model-observation.identifier
Definition | Unique identifier for the observation
Short | Unique identifier for the observation
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..*
Type | Identifier
4. be-model-observation.recordedDate
Definition | Date when the observation was recorded
Short | Date when the observation was recorded
Control | 1..1
Type | dateTime
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
6. be-model-observation.observationDate[x]
Definition | Date or period of the observation
Short | Date or period of the observation
Control | 1..1
Type | Choice of: dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
8. be-model-observation.recorder
Definition | Person, organisation or device that recorded the observation
Short | Person, organisation or device that recorded the observation
Control | 1..1
Type | Reference
10. be-model-observation.performer
Definition | The professional that performed the observation
Short | The professional that performed the observation
Control | 0..1
Type | Reference
12. be-model-observation.patient
Definition | The patient that this observation is about
Short | The patient that this observation is about
Control | 1..1
Type | Reference
14. be-model-observation.request
Definition | The request that this observation is fulfilling
Short | The request that this observation is fulfilling
Control | 0..1
Type | Reference
16. be-model-observation.partOfProcedure
Definition | Part of referenced procedure
Short | Part of referenced procedure
Control | 0..*
Type | Reference
18. be-model-observation.specimen
Definition | The specimen that was used when this observation was made
Short | The specimen that was used when this observation was made
Control | 0..1
Type | Reference
20. be-model-observation.device
Definition | The device used to generate the observation data
Short | The device used to generate the observation data
Control | 0..1
Type | Reference
22. be-model-observation.category
Definition | A code that classifies the general type of observation being made
Short | A code that classifies the general type of observation being made
Control | 0..*
Type | CodeableConcept
24. be-model-observation.code
Definition | Describes what was observed. Sometimes this is called the observation 'name'
Short | Describes what was observed. Sometimes this is called the observation 'name'
Control | 1..1
Type | CodeableConcept
26. be-model-observation.value[x]
Definition | The value of the observation - typically a code, an amount or a date
Short | The value of the observation - typically a code, an amount or a date
Control | 0..1
Type | Choice of: Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, time, dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
28. be-model-observation.component
Definition | Some observations have multiple component observations
Short | Some observations have multiple component observations
Control | 0..*
Type | BackboneElement
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
30. be-model-observation.component.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
32. be-model-observation.component.extension
Definition | May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing | This element introduces a set of slices on `be-model-observation.component.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
34. be-model-observation.component.modifierExtension
Definition | May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
36. be-model-observation.component.code
Definition | Describes what was observed.
Short | Describes what was observed.
Control | 1..1
Type | CodeableConcept
38. be-model-observation.component.value[x]
Definition | The value of the component observation - typically a code, an amount or a date
Short | The value of the component observation - typically a code, an amount or a date
Control | 0..1
Type | Choice of: Quantity, CodeableConcept, string, boolean, integer, Range, Ratio, time, dateTime, Period
[x] Note | SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
40. be-model-observation.status
Definition | The status of the result value.
Short | The status of the result value.
Control | 1..1
Type | code
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
42. be-model-observation.interpretation
Definition | A categorical assessment of an observation value
Short | A categorical assessment of an observation value
Control | 0..*
Type | CodeableConcept
44. be-model-observation.referenceRange
Definition | Guidance on how to interpret the value by comparison to a normal or recommended range
Short | Guidance on how to interpret the value by comparison to a normal or recommended range
Control | 0..*
Type | BackboneElement
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
46. be-model-observation.referenceRange.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
48. be-model-observation.referenceRange.extension
Definition | May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing | This element introduces a set of slices on `be-model-observation.referenceRange.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
50. be-model-observation.referenceRange.modifierExtension
Definition | May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored even if unrecognized
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
52. be-model-observation.referenceRange.low
Definition | Low Range, if relevant
Short | Low Range, if relevant
Control | 0..1
Type | Quantity
54. be-model-observation.referenceRange.high
Definition | High Range, if relevant
Short | High Range, if relevant
Control | 0..1
Type | Quantity
56. be-model-observation.bodySite
Definition | The site on the subject's body where the observation was made (i.e. the target site)
Short | The site on the subject's body where the observation was made (i.e. the target site)
Control | 0..1
Type | https://www.ehealth.fgov.be/standards/fhir/core-clinical/StructureDefinition/be-model-bodysite
58. be-model-observation.certainty
Definition | A subjective assessment of the quality of the observation
Short | A subjective assessment of the quality of the observation
Control | 0..1
Type | CodeableConcept
60. be-model-observation.note
Definition | Comments about the observation or the results
Short | Comments about the observation or the results
Control | 0..*
Type | Annotation