Specifies that a date is relative to some event. The event happens [Duration] after [Event].

This extension is used when a precise date is not known, but rather, the date will be relative to some future event (e.g. Do this 2 weeks after an operation). The event is identified by targetReference (a specific event), targetCode (a kind of event), or both. If both are present, the targetCode indicates an event that occurs within the context of the targetReference - e.g. discharge from a specific Encounter.

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 managable, 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.

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.

The specific event that the date(time) is relative to - e.g. an Encounter, an Observation, a Procedure, etc.

Either or both of targetReference and targetCode can be present (at least one SHALL be). If targetCode is also present, it indicates an event that occurs within the context of this event.

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

The generic type of event that the date(time) is relative to.

Either or both of targetReference and targetCode can be present (at least one SHALL be). If present alongside targetReference, the kind of event is within the specified event - e.g. admission or discharge in an encounter, enrollment or start of therapy in a study, etc.

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

The path to the element of the target that specifies the anchoring date or timeframe for the relative date.

The specified path SHALL be a FHIRPath resolveable on the specified type of the DataRequirement. The path must resolve to an element of type date, dateTime, Period, Schedule, or Timing. The reference plus the targetPath provides a fully computable anchor (e.g. Patient.birthDate or ResearchSubject.progress.where(milestone.coding.where(system=x and code=y).exists()).startDate), while targetCode gives something that is more meaningful to a user (e.g. 'age', 'startOfTreatment'). Often there might be utility in having both.

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

[Deprecated] Defines the relationship between the event and the date.

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

The duration before or after the event that the element on which this extension appears is asserted to be.

a negative offset indicates a duration 'prior' to the event. E.g. "3 days prior to patient death". A positive offset indicates a duration 'after' the event. E.g. "27 years after birth - i.e. Age 27". An offset of 0 indicates occurrence simultaneous with the referenced event. E.g. "Started therapy immediately on admission".

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

Specifies that a date is relative to some event. The event happens [Duration] after [Event].

The specific event that the date(time) is relative to - e.g. an Encounter, an Observation, a Procedure, etc.

The generic type of event that the date(time) is relative to.

The path to the element of the target that specifies the anchoring date or timeframe for the relative date.

The specified path SHALL be a FHIRPath resolveable on the specified type of the DataRequirement. The path must resolve to an element of type date, dateTime, Period, Schedule, or Timing. The reference plus the targetPath provides a fully computable anchor (e.g. Patient.birthDate or ResearchSubject.progress.where(milestone.coding.where(system=x and code=y).exists()).startDate), while targetCode gives something that is more meaningful to a user (e.g. 'age', 'startOfTreatment'). Often there might be utility in having both.

[Deprecated] Defines the relationship between the event and the date.

The duration before or after the event that the element on which this extension appears is asserted to be.

a negative offset indicates a duration 'prior' to the event. E.g. "3 days prior to patient death". A positive offset indicates a duration 'after' the event. E.g. "27 years after birth - i.e. Age 27". An offset of 0 indicates occurrence simultaneous with the referenced event. E.g. "Started therapy immediately on admission".

Specifies that a date is relative to some event. The event happens [Duration] after [Event].

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

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 managable, 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.

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.

The specific event that the date(time) is relative to - e.g. an Encounter, an Observation, a Procedure, etc.

Either or both of targetReference and targetCode can be present (at least one SHALL be). If targetCode is also present, it indicates an event that occurs within the context of this event.

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

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

The generic type of event that the date(time) is relative to.

Either or both of targetReference and targetCode can be present (at least one SHALL be). If present alongside targetReference, the kind of event is within the specified event - e.g. admission or discharge in an encounter, enrollment or start of therapy in a study, etc.

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

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

The path to the element of the target that specifies the anchoring date or timeframe for the relative date.

The specified path SHALL be a FHIRPath resolveable on the specified type of the DataRequirement. The path must resolve to an element of type date, dateTime, Period, Schedule, or Timing. The reference plus the targetPath provides a fully computable anchor (e.g. Patient.birthDate or ResearchSubject.progress.where(milestone.coding.where(system=x and code=y).exists()).startDate), while targetCode gives something that is more meaningful to a user (e.g. 'age', 'startOfTreatment'). Often there might be utility in having both.

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

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

[Deprecated] Defines the relationship between the event and the date.

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

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

The duration before or after the event that the element on which this extension appears is asserted to be.

a negative offset indicates a duration 'prior' to the event. E.g. "3 days prior to patient death". A positive offset indicates a duration 'after' the event. E.g. "27 years after birth - i.e. Age 27". An offset of 0 indicates occurrence simultaneous with the referenced event. E.g. "Started therapy immediately on admission".

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

An Extension

Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

Source of the definition for the extension code - a logical name or a URL.

The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.

Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).