Bản hướng dẫn thực thi (IG) dành cho các hệ thống thông tin Y tế tại Việt Nam
1.0.0 - CI Build

Bản hướng dẫn thực thi (IG) dành cho các hệ thống thông tin Y tế tại Việt Nam, published by Cục Công nghệ thông tin - Bộ Y tế. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7vn/vn-core-ig/ and changes regularly. See the Directory of published versions

Resource Profile: VNCoreMedicationAdministration - Detailed Descriptions

Definitions for the vn-core-medication-administration Profile.

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

0. MedicationAdministration
Definition

Describes the event of a patient consuming or otherwise being administered a medication. This may be as simple as swallowing a tablet or it may be a long running infusion. Related resources tie this event to the authorizing prescription, and the specific encounter between patient and health care practitioner.

ShortAdministration of medication to a patient
Control0..*
Is Modifierfalse
Summaryfalse
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: 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().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: 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: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
2. MedicationAdministration.id
Definition

The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

ShortLogical id of this artifact
Comments

The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

Control0..1
Typeid
Is Modifierfalse
Summarytrue
4. MedicationAdministration.meta
Definition

The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

ShortMetadata about the resource
Control0..1
TypeMeta
Is Modifierfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
6. MedicationAdministration.implicitRules
Definition

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

ShortA set of rules under which this content was created
Comments

Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
8. MedicationAdministration.language
Definition

The base language in which the resource is written.

ShortLanguage of the resource content
Comments

Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

Control0..1
BindingThe codes SHOULD be taken from CommonLanguages
(preferred to http://hl7.org/fhir/ValueSet/languages)

A human language.

Additional BindingsPurpose
AllLanguagesMax Binding
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. MedicationAdministration.text
Definition

A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

ShortText summary of the resource, for human interpretation
Comments

Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.

Control0..1
TypeNarrative
Is Modifierfalse
Summaryfalse
Alternate Namesnarrative, html, xhtml, display
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
12. MedicationAdministration.contained
Definition

These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

ShortContained, inline Resources
Comments

This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

Control0..*
TypeResource
Is Modifierfalse
Summaryfalse
Alternate Namesinline resources, anonymous resources, contained resources
14. MedicationAdministration.extension
Definition

May be used to represent additional information that is not part of the basic definition of the resource. 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.

ShortAdditional 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.

Control0..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-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())
16. MedicationAdministration.modifierExtension
Definition

May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it 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 is allowed to 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).

ShortExtensions that cannot be ignored
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.

Control0..*
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summaryfalse
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 Namesextensions, user content
Invariantsele-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())
18. MedicationAdministration.identifier
Definition

Identifiers associated with this Medication Administration that are defined by business processes and/or used to refer to it when a direct URL reference to the resource itself is not appropriate. They are business identifiers assigned to this resource by the performer or other systems and remain constant as the resource is updated and propagates from server to server.

ShortExternal identifier
Comments

This is a business identifier, not a resource identifier.

NoteThis is a business identifier, not a resource identifier (see discussion)
Control0..*
TypeIdentifier
Is Modifierfalse
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. MedicationAdministration.instantiates
Definition

A protocol, guideline, orderset, or other definition that was adhered to in whole or in part by this event.

ShortInstantiates protocol or definition
Control0..*
Typeuri
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. MedicationAdministration.partOf
Definition

A larger event of which this particular event is a component or step.

ShortPart of referenced event
Control0..*
TypeReference(MedicationAdministration, Procedure, MedicationAdministration Profile - VN Core R4, Procedure Profile - VN Core R4)
Is Modifierfalse
Must Supporttrue
Must Support TypesNo must-support rules about the choice of types/profiles
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. MedicationAdministration.status
Definition

Will generally be set to show that the administration has been completed. For some long running administrations such as infusions, it is possible for an administration to be started but not completed or it may be paused while some other process is under way.

Shortin-progress | not-done | on-hold | completed | entered-in-error | stopped | unknown
Comments

This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

Control1..1
BindingThe codes SHALL be taken from MedicationAdministration Status Codes
(required to http://hl7.org/fhir/ValueSet/medication-admin-status|4.0.1)

A set of codes indicating the current status of a MedicationAdministration.

Typecode
Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. MedicationAdministration.statusReason
Definition

A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

ShortConcept - reference to a terminology or just text
Comments

Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

Control0..*
This element is affected by the following invariants: ele-1
BindingFor example codes, see SNOMEDCTReasonMedicationNotGivenCodes
(example to http://hl7.org/fhir/ValueSet/reason-medication-not-given-codes)

A set of codes indicating the reason why the MedicationAdministration is negated.

TypeCodeableConcept(Codeable Concept profile - VN Core R4)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
28. MedicationAdministration.category
Definition

A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

ShortConcept - reference to a terminology or just text
Comments

Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

Control0..1
This element is affected by the following invariants: ele-1
BindingThe codes SHOULD be taken from MedicationAdministration Category Codes
(preferred to http://hl7.org/fhir/ValueSet/medication-admin-category)

A coded concept describing where the medication administered is expected to occur.

TypeCodeableConcept(Codeable Concept profile - VN Core R4)
Is Modifierfalse
Must Supporttrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
30. MedicationAdministration.medication[x]
Definition

Identifies the medication that was administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

ShortWhat was administered
Comments

If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the medication resource is recommended. For example, if you require form or lot number, then you must reference the Medication resource.

Control1..1
BindingFor example codes, see SNOMEDCTMedicationCodes
(example to http://hl7.org/fhir/ValueSet/medication-codes)

Codes identifying substance or product that can be administered.

TypeChoice of: CodeableConcept, Reference(Medication)
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
Is Modifierfalse
Must Supporttrue
Must Support TypesNo must-support rules about the choice of types/profiles
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
SlicingThis element introduces a set of slices on MedicationAdministration.medication[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
  • type @ $this
  • 32. MedicationAdministration.medication[x]:medicationCodeableConcept
    Slice NamemedicationCodeableConcept
    Definition

    A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

    ShortConcept - reference to a terminology or just text
    Comments

    Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

    Control0..1
    This element is affected by the following invariants: ele-1
    BindingUnless not suitable, these codes SHALL be taken from ValueSet dành cho Mã dược phẩm
    (extensible to http://fhir.ehealth.gov.vn/core/ValueSet/vn-medication-code)
    TypeCodeableConcept(Codeable Concept profile - VN Core R4)
    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
    Is Modifierfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    34. MedicationAdministration.medication[x]:medicationReference
    Slice NamemedicationReference
    Definition

    Identifies the medication that was administered. This is either a link to a resource representing the details of the medication or a simple attribute carrying a code that identifies the medication from a known list of medications.

    ShortWhat was administered
    Comments

    If only a code is specified, then it needs to be a code for a specific product. If more information is required, then the use of the medication resource is recommended. For example, if you require form or lot number, then you must reference the Medication resource.

    Control0..1
    TypeReference(Medication, Medication Profile - VN Core R4)
    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
    Is Modifierfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    36. MedicationAdministration.subject
    Definition

    The person or animal or group receiving the medication.

    ShortWho received medication
    Control1..1
    TypeReference(Patient Profile - VN Core R4)
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    38. MedicationAdministration.context
    Definition

    The visit, admission, or other contact between patient and health care provider during which the medication administration was performed.

    ShortEncounter or Episode of Care administered as part of
    Control0..1
    TypeReference(Encounter Profile - VN Core R4)
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    40. MedicationAdministration.supportingInformation
    Definition

    Additional information (for example, patient height and weight) that supports the administration of the medication.

    ShortAdditional information to support administration
    Control0..*
    TypeReference(Resource)
    Is Modifierfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    42. MedicationAdministration.effective[x]
    Definition

    A specific date/time or interval of time during which the administration took place (or did not take place, when the 'notGiven' attribute is true). For many administrations, such as swallowing a tablet the use of dateTime is more appropriate.

    ShortStart and end time of administration
    Control1..1
    TypeChoice of: dateTime, Period
    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
    Is Modifierfalse
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    44. MedicationAdministration.performer
    Definition

    Indicates who or what performed the medication administration and how they were involved.

    ShortWho performed the medication administration and what they did
    Control0..*
    TypeBackboneElement
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    46. MedicationAdministration.performer.id
    Definition

    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

    ShortUnique id for inter-element referencing
    Control0..1
    Typestring
    Is Modifierfalse
    XML FormatIn the XML format, this property is represented as an attribute.
    Summaryfalse
    48. MedicationAdministration.performer.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.

    ShortAdditional 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.

    Control0..*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    Alternate Namesextensions, user content
    Invariantsele-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())
    50. MedicationAdministration.performer.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).

    ShortExtensions 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.

    Control0..*
    TypeExtension
    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
    Summarytrue
    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 Namesextensions, user content, modifiers
    Invariantsele-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. MedicationAdministration.performer.function
    Definition

    Distinguishes the type of involvement of the performer in the medication administration.

    ShortType of performance
    Control0..1
    BindingFor example codes, see MedicationAdministration Performer Function Codes
    (example to http://hl7.org/fhir/ValueSet/med-admin-perform-function)

    A code describing the role an individual played in administering the medication.

    TypeCodeableConcept
    Is Modifierfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    54. MedicationAdministration.performer.actor
    Definition

    Indicates who or what performed the medication administration.

    ShortWho performed the medication administration
    Control1..1
    TypeReference(Practitioner, PractitionerRole, Patient, RelatedPerson, Device, Practitioner Profile - VN Core R4)
    Is Modifierfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    56. MedicationAdministration.reasonCode
    Definition

    A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

    ShortConcept - reference to a terminology or just text
    Comments

    Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

    Control0..*
    This element is affected by the following invariants: ele-1
    BindingFor example codes, see ReasonMedicationGivenCodes
    (example to http://hl7.org/fhir/ValueSet/reason-medication-given-codes)

    A set of codes indicating the reason why the MedicationAdministration was made.

    TypeCodeableConcept(Codeable Concept profile - VN Core R4)
    Is Modifierfalse
    Must Supporttrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    58. MedicationAdministration.reasonReference
    Definition

    Condition or observation that supports why the medication was administered.

    ShortCondition or observation that supports why the medication was administered
    Comments

    This is a reference to a condition that is the reason for the medication request. If only a code exists, use reasonCode.

    Control0..*
    TypeReference(Condition, Observation, DiagnosticReport)
    Is Modifierfalse
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    60. MedicationAdministration.request
    Definition

    The original request, instruction or authority to perform the administration.

    ShortRequest administration performed against
    Comments

    This is a reference to the MedicationRequest where the intent is either order or instance-order. It should not reference MedicationRequests where the intent is any other value.

    Control0..1
    TypeReference(MedicationRequest Profile - VN Core R4)
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    62. MedicationAdministration.device
    Definition

    The device used in administering the medication to the patient. For example, a particular infusion pump.

    ShortDevice used to administer
    Control0..*
    TypeReference(Device)
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    64. MedicationAdministration.note
    Definition

    Extra information about the medication administration that is not conveyed by the other attributes.

    ShortInformation about the administration
    Control0..*
    TypeAnnotation
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    66. MedicationAdministration.dosage
    Definition

    Describes the medication dosage information details e.g. dose, rate, site, route, etc.

    ShortDetails of how medication was taken
    Control0..1
    TypeBackboneElement
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    mad-1: SHALL have at least one of dosage.dose or dosage.rate[x] (dose.exists() or rate.exists())
    68. MedicationAdministration.dosage.id
    Definition

    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

    ShortUnique id for inter-element referencing
    Control0..1
    Typestring
    Is Modifierfalse
    XML FormatIn the XML format, this property is represented as an attribute.
    Summaryfalse
    70. MedicationAdministration.dosage.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.

    ShortAdditional 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.

    Control0..*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    Alternate Namesextensions, user content
    Invariantsele-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())
    72. MedicationAdministration.dosage.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).

    ShortExtensions 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.

    Control0..*
    TypeExtension
    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
    Summarytrue
    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 Namesextensions, user content, modifiers
    Invariantsele-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())
    74. MedicationAdministration.dosage.text
    Definition

    Free text dosage can be used for cases where the dosage administered is too complex to code. When coded dosage is present, the free text dosage may still be present for display to humans.

    The dosage instructions should reflect the dosage of the medication that was administered.

    ShortFree text dosage instructions e.g. SIG
    Control1..1
    Typestring
    Is Modifierfalse
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    76. MedicationAdministration.dosage.site
    Definition

    A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

    ShortConcept - reference to a terminology or just text
    Comments

    Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

    Control0..1
    This element is affected by the following invariants: ele-1
    BindingThe codes SHOULD be taken from ValueSet dành cho Vị trí cơ thể theo giải phẫu học (SNOMED CT)
    (preferred to http://fhir.ehealth.gov.vn/core/ValueSet/snomedCT-anatomical-body-structure)
    TypeCodeableConcept(Codeable Concept profile - VN Core R4)
    Is Modifierfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    78. MedicationAdministration.dosage.route
    Definition

    A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

    ShortConcept - reference to a terminology or just text
    Comments

    Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

    Control0..1
    This element is affected by the following invariants: ele-1
    BindingThe codes SHOULD be taken from ValueSet dành cho Đường dùng thuốc (SNOMED CT)
    (preferred to http://fhir.ehealth.gov.vn/core/ValueSet/snomedCT-dosage-administration-route)
    TypeCodeableConcept(Codeable Concept profile - VN Core R4)
    Is Modifierfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    80. MedicationAdministration.dosage.method
    Definition

    A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

    ShortConcept - reference to a terminology or just text
    Comments

    Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

    Control0..1
    This element is affected by the following invariants: ele-1
    BindingThe codes SHOULD be taken from SNOMEDCTAdministrationMethodCodes
    (preferred to http://hl7.org/fhir/ValueSet/administration-method-codes)
    TypeCodeableConcept(Codeable Concept profile - VN Core R4)
    Is Modifierfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    82. MedicationAdministration.dosage.dose
    Definition

    The amount of the medication given at one administration event. Use this value when the administration is essentially an instantaneous event such as a swallowing a tablet or giving an injection.

    ShortAmount of medication per dose
    Comments

    If the administration is not instantaneous (rate is present), this can be specified to convey the total amount administered over period of time of a single administration.

    Control0..1
    TypeQuantity(SimpleQuantity, SimpleQuantity (IPS))
    Is Modifierfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    84. MedicationAdministration.dosage.rate[x]
    Definition

    Identifies the speed with which the medication was or will be introduced into the patient. Typically, the rate for an infusion e.g. 100 ml per 1 hour or 100 ml/hr. May also be expressed as a rate per unit of time, e.g. 500 ml per 2 hours. Other examples: 200 mcg/min or 200 mcg/1 minute; 1 liter/8 hours.

    ShortDose quantity per unit of time
    Comments

    If the rate changes over time, and you want to capture this in MedicationAdministration, then each change should be captured as a distinct MedicationAdministration, with a specific MedicationAdministration.dosage.rate, and the date time when the rate change occurred. Typically, the MedicationAdministration.dosage.rate element is not used to convey an average rate.

    Control0..1
    TypeChoice of: Ratio(Ratio (IPS)), Quantity(SimpleQuantity, SimpleQuantity (IPS))
    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
    Is Modifierfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    86. MedicationAdministration.eventHistory
    Definition

    A summary of the events of interest that have occurred, such as when the administration was verified.

    ShortA list of events of interest in the lifecycle
    Comments

    This might not include provenances for all versions of the request – only those deemed “relevant” or important. This SHALL NOT include the Provenance associated with this current version of the resource. (If that provenance is deemed to be a “relevant” change, it will need to be added as part of a later update. Until then, it can be queried directly as the Provenance that points to this version using _revinclude All Provenances should have some historical version of this Request as their subject.

    Control0..*
    TypeReference(Provenance)
    Is Modifierfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))