PS-CA Pan-Canadian Patient Summaries | Data Type: Quantity (PS-CA) - SIMPLIFIER.NET

QuantityPSCA (Quantity)	I		Quantity	Element id Quantity Short description A measured amount using UCUM Definition A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies. This profile imposes that the code system for units be UCUM. 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() or (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()` 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 Unique id for inter-element referencing 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	I	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. 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. 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 Constraints 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()` 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 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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..1	codeBinding	There are no (further) constraints on this element Element id Quantity.comparator Short description < \| <= \| >= \| > - how to understand the value Definition How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value. Requirements Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology. 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. QuantityComparator (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
system	S Σ I	1..1	uriFixed Value	Element id Quantity.system Short description UCUM system for units 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 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value http://unitsofmeasure.org Mappings v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
code	S Σ	1..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 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code

Documentation:

https://simplifier.net/ps-ca-r1/quantitypsca

Last updated on 5/1/2024, 5:32:34 PM