Simple Weight Example

@prefix fhir: <http://hl7.org/fhir/> .
@prefix loinc: <https://loinc.org/rdf/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sct: <http://snomed.info/id/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

# - resource -------------------------------------------------------------------

#   
# This is an example of a simple weight measurement.
#  

[a fhir:Observation ;
  fhir:nodeRole fhir:treeRoot ;
  fhir:id [ fhir:v "example"] ; # 
  fhir:status [ fhir:v "final"] ; #    the mandatory quality flags:   
  fhir:category ( [
     fhir:coding ( [
       fhir:system [ fhir:v "http://terminology.hl7.org/CodeSystem/observation-category"^^xsd:anyURI ] ;
       fhir:code [ fhir:v "vital-signs" ] ;
       fhir:display [ fhir:v "Vital Signs" ]
     ] )
  ] [
     fhir:coding ( [
       a loinc:29463-7 ;
       fhir:system [ fhir:v "http://loinc.org"^^xsd:anyURI ] ;
       fhir:code [ fhir:v "29463-7" ] ;
       fhir:display [ fhir:v "Body Weight" ] #   methodless LOINC \"interoperability category\" code  
     ] )
  ] ) ; #   category code is A code that classifies the general type of observation being made. This is used for searching, sorting and display purposes. 
  fhir:code [
     fhir:coding ( [
       a loinc:3141-9 ;
       fhir:system [ fhir:v "http://loinc.org"^^xsd:anyURI ] ;
       fhir:code [ fhir:v "3141-9" ] ;
       fhir:display [ fhir:v "Body weight Measured" ] #   more specific method = measured LOINC 
     ] [
       a sct:27113001 ;
       fhir:system [ fhir:v "http://snomed.info/sct"^^xsd:anyURI ] ;
       fhir:code [ fhir:v "27113001" ] ;
       fhir:display [ fhir:v "Body weight" ]
     ] [
       fhir:system [ fhir:v "http://acme.org/devices/clinical-codes"^^xsd:anyURI ] ;
       fhir:code [ fhir:v "body-weight" ] ;
       fhir:display [ fhir:v "Body Weight" ]
     ] ) #    LOINC - always recommended to have a LOINC code   
  ] ; #   
#    Observations are often coded in multiple code systems.
#      - LOINC provides codes of varying granularity (though not usefully more specific in this particular case) and more generic LOINCs  can be mapped to more specific codes as shown here
#      - snomed provides a clinically relevant code that is usually less granular than LOINC
#      - the source system provides its own code, which may be less or more granular than LOINC
#    
  fhir:subject [
     fhir:reference [ fhir:v "Patient/example" ]
  ] ; # 
  fhir:encounter [
     fhir:reference [ fhir:v "Encounter/example" ]
  ] ; # 
  fhir:effective [ fhir:v "2016-03-28"^^xsd:date] ; # 
  fhir:value [
     a fhir:Quantity ;
     fhir:value [ fhir:v "185"^^xsd:decimal ] ;
     fhir:unit [ fhir:v "lbs" ] ;
     fhir:system [ fhir:v "http://unitsofmeasure.org"^^xsd:anyURI ] ;
     fhir:code [ fhir:v "[lb_av]" ]
  ]] . #    In FHIR, units may be represented twice. Once in the
#    agreed human representation, and once in a coded form.
#    Both is best, since it's not always possible to infer
#    one from the other in code.
#
#    When a computable unit is provided, UCUM (http://unitsofmeasure.org)
#    is always preferred, but it doesn't provide notional units (such as
#    "tablet"), etc. For these, something else is required (e.g. SNOMED CT)
#     

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