Extension: Age that the allergy or intolerance resolved

GAO Ballot Package

This page is part of the FHIR Specification (v1.1.0: STU 3 Ballot 1). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R4B R4 R3 R2

This is a frozen snapshot of the FHIR specification created for the purpose of balloting the GAO implementation Guide. It includes draft changes that may be part of the future DSTU 2.1 release but further change is expected. Readers should focus solely on the GAO implementation content, and FHIR DSTU 2 for other purposes.

Extension Age that the allergy or intolerance resolved - Detailed Descriptions

Detailed Descriptions for the elements in the extension.

Extension
Definition	The estimated patient age at which the allergy or intolerance resolved. Should be specified only if the status is resolved.
Control	0..1
Type	Extension
Comments	Removed Date since it is hard to imagine knowing the date an allergy abated. The assertion date is already captured.
Extension.id
Definition	unique id for the element within a resource (for internal references).
Control	0..1
Type	id
Extension.extension(extension)
Definition	An Extension
Control	0..0
Type	Extension
Extension.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Control	1..1
Type	uri
Comments	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 should be version specific. This will ideally be the URI for the Resource Profile defining the extension, with the code for the extension after a #.
Fixed Value	http://hl7.org/fhir/StructureDefinition/allergyintolerance-resolutionAge
Extension.valueQuantity(Age)
Definition	There SHALL be a code if there is a value and it SHALL be an expression of time. If system is present, it SHALL be UCUM. If value is present, it SHALL be positive.
Control	1..1
Type	Quantity(Age)
Comments	The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.
Invariants	Defined on this element age-1: There SHALL be a code if there is a value and it SHALL be an expression of time. If system is present, it SHALL be UCUM. If value is present, it SHALL be positive. (xpath: (f:code or not(f:value)) and (not(exists(f:system)) or f:system/@value='http://unitsofmeasure.org') and not(contains(f:value/@value, '-'))) qty-3: If a code for the unit is present, the system SHALL also be present (xpath: not(exists(f:code)) or exists(f:system))