STU3 Candidate

This page is part of the FHIR Specification (v1.8.0: STU 3 Draft). 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: R5 R4B R4 R3

10.1.17.40 StructureDefinition: BMI

(No assigned work group) Maturity Level: 0Context: Any

The official URL for this profile is: 

http://hl7.org/fhir/StructureDefinition/bmi

FHIR Body Mass Index (BMI) Profile

This profile was published on Fri, Mar 25, 2016 00:00+1100 as a draft by Health Level Seven International (Orders and Observations Workgroup).

10.1.17.40.1 Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

This structure is derived from Vital Signs Profile.

Summary

10.1.17.40.2 Complete Summary of the Mandatory Requirements

  1. One code in Observation.code which must have
    • a fixed Observation.code.coding.system='http ://loinc.org'
    • a fixed Observation.code.coding.code= '39156-5'
    • Other additional codes are allowed - e.g. more specific LOINC Codes, SNOMED CT concepts, system specific codes. All codes SHALL have an system value
  2. a fixedObservation.valueQuantity.code = 'kg/m2'

Fixed Value: 3 elements

Slices

This structure defines the following Slices:

  • The element Observation.code.coding is sliced based on the value of code

This structure is derived from Vital Signs Profile.

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..*FHIR Body Mass Index (BMI) Profile
... code 1..1CodeableConceptBody Mass Index (BMI)
.... coding CodingSlice: Unordered, Open, by code
.... coding 0..*Coding
..... system 0..1uriFixed Value: http://loinc.org
..... code 0..1codeFixed Value: 39156-5
... valueQuantity 0..1Quantity
.... code 1..1codeFixed Value: kg/m2

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation I0..*FHIR Body Mass Index (BMI) Profile
... id ∑0..1idLogical id of this artifact
... meta ∑0..1MetaMetadata about the resource
... implicitRules ?!∑0..1uriA set of rules under which this content was created
... language 0..1codeLanguage of the resource content
Binding: Common Languages (extensible)
... text I0..1NarrativeText summary of the resource, for human interpretation
... contained 0..*ResourceContained, inline Resources
... extension 0..*ExtensionAdditional Content defined by implementations
... modifierExtension ?!0..*ExtensionExtensions that cannot be ignored
... identifier 0..*IdentifierUnique Id for this particular observation
... status ?!S∑1..1coderegistered | preliminary | final | amended +
Binding: ObservationStatus (required)
... category S1..1CodeableConceptClassification of type of observation
Binding: Observation Category Codes (example)
Required Pattern: {"coding":[{"system":"http://hl7.org/fhir/observation-category","code":"vital-signs"}]}
... code S∑1..1CodeableConceptBody Mass Index (BMI)
Binding: Vital Signs (extensible)
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... coding ∑CodingCode defined by a terminology system
Slice: Unordered, Open, by code
.... coding ∑0..*CodingCode defined by a terminology system
..... id 0..1stringxml:id (or equivalent in JSON)
..... extension 0..*ExtensionAdditional Content defined by implementations
..... system ∑0..1uriIdentity of the terminology system
Fixed Value: http://loinc.org
..... version ∑0..1stringVersion of the system - if relevant
..... code ∑0..1codeSymbol in syntax defined by the system
Fixed Value: 39156-5
..... display ∑0..1stringRepresentation defined by the system
..... userSelected ∑0..1booleanIf this coding was chosen directly by the user
.... text ∑0..1stringPlain text representation of the concept
... subject S∑1..1Reference(Patient)Who and/or what this is about
... encounter 0..1Reference(Encounter)Healthcare event during which this observation is made
... effective[x] S∑I1..1dateTime, PeriodOften just a dateTime for Vital Signs
vs-1: Datetime must be at least to day.
... issued ∑0..1instantDate/Time this was made available
... performer ∑0..*Reference(Practitioner), Reference(Organization), Reference(Patient), Reference(RelatedPerson)Who is responsible for the observation
... valueQuantity S∑I0..1QuantityVital Sign Value recorded with UCUM
Binding: Vital Signs Units (required)
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... value S∑1..1decimalNumerical value (with implicit precision)
.... comparator ?!∑0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required)
.... unit S∑1..1stringUnit representation
.... system S∑I1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
.... code S∑1..1codeCoded responses from the common UCUM units for vital signs value set.
Fixed Value: kg/m2
... dataAbsentReason SI0..1CodeableConceptWhy the result is missing
Binding: Observation Value Absent Reason (extensible)
... interpretation 0..1CodeableConceptHigh, low, normal, etc.
Binding: Observation Interpretation Codes (extensible)
... comment 0..1stringComments about result
... bodySite 0..1CodeableConceptObserved body part
Binding: SNOMED CT Body Structures (example)
... method 0..1CodeableConceptHow it was done
Binding: Observation Methods (example)
... specimen 0..1Reference(Specimen)Specimen used for this observation
... device 0..1Reference(Device), Reference(DeviceMetric)(Measurement) Device
... referenceRange I0..*BackboneElementProvides guide for interpretation
obs-3: Must have at least a low or a high or text
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... modifierExtension ?!∑0..*ExtensionExtensions that cannot be ignored
.... low I0..1SimpleQuantityLow Range, if relevant
.... high I0..1SimpleQuantityHigh Range, if relevant
.... meaning 0..*CodeableConceptReference range qualifier
Binding: Observation Reference Range Meaning Codes (example)
.... age 0..1RangeApplicable age range, if relevant
.... text 0..1stringText based reference range in an observation
... related S∑I0..*BackboneElementUsed when reporting systolic and diastolic blood pressure.
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... modifierExtension ?!∑0..*ExtensionExtensions that cannot be ignored
.... type S1..1codehas-member | derived-from | sequel-to | replaces | qualified-by | interfered-by
Binding: ObservationRelationshipType (required)
Fixed Value: has-member
.... target S1..1Reference(VitalSigns)Resource that is related to this one
... component S∑I0..*BackboneElementUsed when reporting systolic and diastolic blood pressure.
vs-3: If there is no a value a data absent reason must be present
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... modifierExtension ?!∑0..*ExtensionExtensions that cannot be ignored
.... code S∑1..1CodeableConceptType of component observation (code / type)
Binding: Vital Signs (extensible)
.... valueQuantity S∑0..1QuantityVital Sign Value recorded with UCUM
Binding: Vital Signs Units (required)
..... id 0..1stringxml:id (or equivalent in JSON)
..... extension 0..*ExtensionAdditional Content defined by implementations
..... value S∑1..1decimalNumerical value (with implicit precision)
..... comparator ?!∑0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required)
..... unit S∑1..1stringUnit representation
..... system S∑I1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
..... code S∑1..1codeCoded responses from the common UCUM units for vital signs value set.
.... dataAbsentReason SI0..1CodeableConceptWhy the component result is missing
Binding: Observation Value Absent Reason (extensible)
.... interpretation 0..1CodeableConceptHigh, low, normal, etc.
Binding: Observation Interpretation Codes (extensible)
.... referenceRange 0..*Unknown reference to #Observation:bmi.referenceRange
Provides guide for interpretation of component result

doco Documentation for this format

todo

This structure is derived from Vital Signs Profile.

Summary

10.1.17.40.3 Complete Summary of the Mandatory Requirements

  1. One code in Observation.code which must have
    • a fixed Observation.code.coding.system='http ://loinc.org'
    • a fixed Observation.code.coding.code= '39156-5'
    • Other additional codes are allowed - e.g. more specific LOINC Codes, SNOMED CT concepts, system specific codes. All codes SHALL have an system value
  2. a fixedObservation.valueQuantity.code = 'kg/m2'

Fixed Value: 3 elements

Slices

This structure defines the following Slices:

  • The element Observation.code.coding is sliced based on the value of code

Differential View

This structure is derived from Vital Signs Profile.

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..*FHIR Body Mass Index (BMI) Profile
... code 1..1CodeableConceptBody Mass Index (BMI)
.... coding CodingSlice: Unordered, Open, by code
.... coding 0..*Coding
..... system 0..1uriFixed Value: http://loinc.org
..... code 0..1codeFixed Value: 39156-5
... valueQuantity 0..1Quantity
.... code 1..1codeFixed Value: kg/m2

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation I0..*FHIR Body Mass Index (BMI) Profile
... id ∑0..1idLogical id of this artifact
... meta ∑0..1MetaMetadata about the resource
... implicitRules ?!∑0..1uriA set of rules under which this content was created
... language 0..1codeLanguage of the resource content
Binding: Common Languages (extensible)
... text I0..1NarrativeText summary of the resource, for human interpretation
... contained 0..*ResourceContained, inline Resources
... extension 0..*ExtensionAdditional Content defined by implementations
... modifierExtension ?!0..*ExtensionExtensions that cannot be ignored
... identifier 0..*IdentifierUnique Id for this particular observation
... status ?!S∑1..1coderegistered | preliminary | final | amended +
Binding: ObservationStatus (required)
... category S1..1CodeableConceptClassification of type of observation
Binding: Observation Category Codes (example)
Required Pattern: {"coding":[{"system":"http://hl7.org/fhir/observation-category","code":"vital-signs"}]}
... code S∑1..1CodeableConceptBody Mass Index (BMI)
Binding: Vital Signs (extensible)
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... coding ∑CodingCode defined by a terminology system
Slice: Unordered, Open, by code
.... coding ∑0..*CodingCode defined by a terminology system
..... id 0..1stringxml:id (or equivalent in JSON)
..... extension 0..*ExtensionAdditional Content defined by implementations
..... system ∑0..1uriIdentity of the terminology system
Fixed Value: http://loinc.org
..... version ∑0..1stringVersion of the system - if relevant
..... code ∑0..1codeSymbol in syntax defined by the system
Fixed Value: 39156-5
..... display ∑0..1stringRepresentation defined by the system
..... userSelected ∑0..1booleanIf this coding was chosen directly by the user
.... text ∑0..1stringPlain text representation of the concept
... subject S∑1..1Reference(Patient)Who and/or what this is about
... encounter 0..1Reference(Encounter)Healthcare event during which this observation is made
... effective[x] S∑I1..1dateTime, PeriodOften just a dateTime for Vital Signs
vs-1: Datetime must be at least to day.
... issued ∑0..1instantDate/Time this was made available
... performer ∑0..*Reference(Practitioner), Reference(Organization), Reference(Patient), Reference(RelatedPerson)Who is responsible for the observation
... valueQuantity S∑I0..1QuantityVital Sign Value recorded with UCUM
Binding: Vital Signs Units (required)
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... value S∑1..1decimalNumerical value (with implicit precision)
.... comparator ?!∑0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required)
.... unit S∑1..1stringUnit representation
.... system S∑I1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
.... code S∑1..1codeCoded responses from the common UCUM units for vital signs value set.
Fixed Value: kg/m2
... dataAbsentReason SI0..1CodeableConceptWhy the result is missing
Binding: Observation Value Absent Reason (extensible)
... interpretation 0..1CodeableConceptHigh, low, normal, etc.
Binding: Observation Interpretation Codes (extensible)
... comment 0..1stringComments about result
... bodySite 0..1CodeableConceptObserved body part
Binding: SNOMED CT Body Structures (example)
... method 0..1CodeableConceptHow it was done
Binding: Observation Methods (example)
... specimen 0..1Reference(Specimen)Specimen used for this observation
... device 0..1Reference(Device), Reference(DeviceMetric)(Measurement) Device
... referenceRange I0..*BackboneElementProvides guide for interpretation
obs-3: Must have at least a low or a high or text
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... modifierExtension ?!∑0..*ExtensionExtensions that cannot be ignored
.... low I0..1SimpleQuantityLow Range, if relevant
.... high I0..1SimpleQuantityHigh Range, if relevant
.... meaning 0..*CodeableConceptReference range qualifier
Binding: Observation Reference Range Meaning Codes (example)
.... age 0..1RangeApplicable age range, if relevant
.... text 0..1stringText based reference range in an observation
... related S∑I0..*BackboneElementUsed when reporting systolic and diastolic blood pressure.
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... modifierExtension ?!∑0..*ExtensionExtensions that cannot be ignored
.... type S1..1codehas-member | derived-from | sequel-to | replaces | qualified-by | interfered-by
Binding: ObservationRelationshipType (required)
Fixed Value: has-member
.... target S1..1Reference(VitalSigns)Resource that is related to this one
... component S∑I0..*BackboneElementUsed when reporting systolic and diastolic blood pressure.
vs-3: If there is no a value a data absent reason must be present
.... id 0..1stringxml:id (or equivalent in JSON)
.... extension 0..*ExtensionAdditional Content defined by implementations
.... modifierExtension ?!∑0..*ExtensionExtensions that cannot be ignored
.... code S∑1..1CodeableConceptType of component observation (code / type)
Binding: Vital Signs (extensible)
.... valueQuantity S∑0..1QuantityVital Sign Value recorded with UCUM
Binding: Vital Signs Units (required)
..... id 0..1stringxml:id (or equivalent in JSON)
..... extension 0..*ExtensionAdditional Content defined by implementations
..... value S∑1..1decimalNumerical value (with implicit precision)
..... comparator ?!∑0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required)
..... unit S∑1..1stringUnit representation
..... system S∑I1..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
..... code S∑1..1codeCoded responses from the common UCUM units for vital signs value set.
.... dataAbsentReason SI0..1CodeableConceptWhy the component result is missing
Binding: Observation Value Absent Reason (extensible)
.... interpretation 0..1CodeableConceptHigh, low, normal, etc.
Binding: Observation Interpretation Codes (extensible)
.... referenceRange 0..*Unknown reference to #Observation:bmi.referenceRange
Provides guide for interpretation of component result

doco Documentation for this format

XML Template

JSON Template

todo

 

Other representations of profile: Schematron

10.1.17.40.4 Terminology Bindings

PathNameConformanceValueSet
Observation.languageCommon LanguagesextensibleCommon Languages
Observation.statusObservationStatusrequiredObservationStatus
Observation.categoryObservation Category CodesexampleObservation Category Codes
Observation.codeVital SignsextensibleVital Signs
Observation.valueQuantityVital Signs UnitsrequiredVital Signs Units
Observation.valueQuantity.comparatorQuantityComparatorrequiredQuantityComparator
Observation.dataAbsentReasonObservation Value Absent ReasonextensibleObservation Value Absent Reason
Observation.interpretationObservation Interpretation CodesextensibleObservation Interpretation Codes
Observation.bodySiteSNOMED CT Body StructuresexampleSNOMED CT Body Structures
Observation.methodObservation MethodsexampleObservation Methods
Observation.referenceRange.meaningObservation Reference Range Meaning CodesexampleObservation Reference Range Meaning Codes
Observation.related.typeObservationRelationshipTyperequiredObservationRelationshipType
Observation.component.codeVital SignsextensibleVital Signs
Observation.component.valueQuantityVital Signs UnitsrequiredVital Signs Units
Observation.component.valueQuantity.comparatorQuantityComparatorrequiredQuantityComparator
Observation.component.dataAbsentReasonObservation Value Absent ReasonextensibleObservation Value Absent Reason
Observation.component.interpretationObservation Interpretation CodesextensibleObservation Interpretation Codes

10.1.17.40.5 Constraints

IdPathDetailsRequirements
vs-1Observation.effective[x]Datetime must be at least to day.
XPath: f:matches(effectiveDateTime,/\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d([+-][0-2]\d:[0-5]\d|Z)/)
obs-3Observation.referenceRangeMust have at least a low or a high or text
XPath: (exists(f:low) or exists(f:high)or exists(f:text))
vs-3Observation.componentIf there is no a value a data absent reason must be present
XPath: exists(f:*[starts-with(local-name(.), 'value)]) or exists(f:dataAbsentReason)
.