Standard Health Record

IntegerQuantityProfile

Definitions for shr-core-IntegerQuantity.

Count
Definition

A Quantity that is an integer.

Control0..*
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.

InvariantsDefined on this element
cnt-3: There SHALL be a code with a value of "1" if there is a value and it SHALL be an expression of length. If system is present, it SHALL be UCUM. If present, the value SHALL a whole number. (: (code or value.empty()) and (system.empty() or system = %ucum) and (code.empty() or code = '1') and (value.empty() or value.toString().contains('.').not()))
qty-3: If a code for the unit is present, the system SHALL also be present (: code.empty() or system.exists())
Count.id
Definition

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

Control0..1
Typestring
Count.extension
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.

Control0..*
TypeExtension
Alternate Namesextensions, user content
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.

Count.value
Definition

Decimal representing a Quantity that is an integer.

Control1..1
Typedecimal
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).

Count.comparator
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.

Control0..1
BindingHow the Quantity should be understood and represented.
The codes SHALL be taken from QuantityComparator
Typecode
Is Modifiertrue
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 if MissingIf there is no comparator, then there is no modification of the value
Count.unit
Definition

A human-readable form of the unit.

Control0..1
Typestring
Requirements

There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.

Count.system
Definition

The identification of the system that provides the coded form of the unit.

Control0..1 This element is affected by the following invariants: qty-3
Typeuri
Requirements

Need to know the system that defines the coded form of the unit.

Count.code
Definition

A computer processable form of the unit in some unit representation system.

Control0..1
Typecode
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.