Blue Button 2.0 Implementation Guide

D.4.1.4 StructureDefinition: - Detailed Descriptions

Definitions for the StructureDefinition-bluebutton-snf-nch-bene-blood-ddctbl-lblty-am-extension Profile.

Extension
Definition

Optional Extension Element - found in all resources.

Control1..1 This element is affected by the following invariants: ele-1
InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (: extension.exists() != value.exists())
Extension.id
Definition

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

Control1..1 This element is affected by the following invariants: ele-1
Typestring
Comments

Note that FHIR strings may not exceed 1MB in size

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
Extension.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..* This element is affected by the following invariants: ele-1
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.

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (: extension.exists() != value.exists())
Extension.url
Definition

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

Control1..1 This element is affected by the following invariants: ele-1
Typeuri
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 SHALL be a URI for the Structure Definition defining the extension.

Fixed Valuehttps://bluebutton.cms.gov/assets/ig/StructureDefinition-bluebutton-snf-nch-bene-blood-ddctbl-lblty-am-extension
InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
Extension.valueMoney(valueMoney)
Definition

Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).

Control1..1 This element is affected by the following invariants: ele-1
TypeMoney
Comments

A stream of bytes, base64 encoded

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
Extension.valueMoney.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..0 This element is affected by the following invariants: ele-1
Typestring
Comments

Note that FHIR strings may not exceed 1MB in size

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
Extension.valueMoney.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..* This element is affected by the following invariants: ele-1
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.

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (: extension.exists() != value.exists())
Extension.valueMoney.value
Definition

The value of the measured amount. The value includes an implicit precision in the presentation of the value.

Control1..1 This element is affected by the following invariants: ele-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).

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
Extension.valueMoney.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..0 This element is affected by the following invariants: ele-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
InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
Extension.valueMoney.unit
Definition

A human-readable form of the unit.

Control0..0 This element is affected by the following invariants: ele-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.

Comments

Note that FHIR strings may not exceed 1MB in size

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
Extension.valueMoney.system
Definition

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

Control1..1 This element is affected by the following invariants: ele-1, qty-3
Typeuri
Requirements

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

Comments

see http://en.wikipedia.org/wiki/Uniformresourceidentifier

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))
Extension.valueMoney.code
Definition

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

Control1..1 This element is affected by the following invariants: ele-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.

InvariantsDefined on this element
ele-1: All FHIR elements must have a @value or children (: hasValue() | (children().count() > id.count()))