Core Data Types STU3 | SimpleQuantity - SIMPLIFIER.NET

SimpleQuantity (Quantity)	I		Quantity	Element id Quantity:simplequantity Short description A fixed quantity (no comparator) Definition The comparator is not used on a SimpleQuantity 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. Data type Quantity Constraints ele-1: All FHIR elements must have a @value or children `hasValue() \| (children().count() > id.count())` qty-3: If a code for the unit is present, the system SHALL also be present `code.empty() or system.exists()` sqty-1: The comparator is not used on a SimpleQuantity `comparator.empty()` Mappings rim: n/a v2: SN (see also Range) or CQ rim: PQ, IVL<PQ>, MO, CO, depending on the values
id		0..1	string	There are no (further) constraints on this element Element id Quantity.id Short description xml:id (or equivalent in JSON) Definition unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension		0..*	Extension	There are no (further) constraints on this element Element id Quantity.extension Short description Additional Content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. In order 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. 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. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Mappings rim: n/a
value	Σ	0..1	decimal	There are no (further) constraints on this element Element id Quantity.value Short description Numerical value (with implicit precision) Definition The value of the measured amount. The value includes an implicit precision in the presentation of the value. Requirements Precision is handled implicitly in almost all cases of measurement. Comments The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books). Data type decimal Mappings v2: SN.2 / CQ - N/A rim: PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
comparator	Σ ?!	0..0	codeBinding	Element id Quantity:simplequantity.comparator Short description < \| <= \| >= \| > - how to understand the value Definition Not allowed to be used in this context Requirements Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology. Comments This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value. Meaning when missing If there is no comparator, then there is no modification of the value Data type code Binding How the Quantity should be understood and represented. ?? (required) Mappings v2: SN.1 / CQ.1 rim: IVL properties
unit	Σ	0..1	string	There are no (further) constraints on this element Element id Quantity.unit Short description Unit representation Definition A human-readable form of the unit. Requirements There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms. Data type string Mappings v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
system	Σ I	0..1	uri	There are no (further) constraints on this element Element id Quantity.system Short description System that defines coded unit form Definition The identification of the system that provides the coded form of the unit. Requirements Need to know the system that defines the coded form of the unit. Data type uri Mappings v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
code	Σ	0..1	code	There are no (further) constraints on this element Element id Quantity.code Short description Coded form of the unit Definition A computer processable form of the unit in some unit representation system. Requirements Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest. Comments The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system. Data type code Mappings v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code

Documentation:

https://simplifier.net/coredatatypesstu3/simplequantity

Last updated on 7/4/2018, 2:43:10 PM