This page is part of the FHIRPath Specification (v3.0.0-ballot: R2 Ballot 1) based on FHIR (HL7® FHIR® Standard) R4. The current version which supersedes this version is 2.0.0. For a full list of available versions, see the Directory of published versions
: Example Observation - TTL Representation
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@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 -------------------------------------------------------------------
a fhir:Observation ;
fhir:nodeRole fhir:treeRoot ;
fhir:id [ fhir:v "example"] ; #
fhir:text [
fhir:status [ fhir:v "generated" ] ;
fhir:div "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: Observation example</b></p><a name=\"example\"> </a><a name=\"hcexample\"> </a><a name=\"example-en-US\"> </a><p><b>status</b>: Final</p><p><b>category</b>: <span title=\"Codes:{http://terminology.hl7.org/CodeSystem/observation-category vital-signs}\">Vital Signs</span></p><p><b>code</b>: <span title=\"Codes:{http://loinc.org 29463-7}, {http://loinc.org 3141-9}, {http://snomed.info/sct 27113001}, {http://acme.org/devices/clinical-codes body-weight}\">Body Weight</span></p><p><b>subject</b>: <a href=\"Patient-example.html\">Jim Male, DoB: 1974-12-25 ( Medical record number (use: usual, period: 2001-05-06 --> (ongoing)))</a></p><p><b>effective</b>: 2016-03-28</p><p><b>value</b>: 185 lbs<span style=\"background: LightGoldenRodYellow\"> (Details: UCUM code[lb_av] = '[lb_av]')</span></p></div>"
] ; #
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" ] ] )
] ) ; # 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:29463-7 ;
fhir:system [ fhir:v "http://loinc.org"^^xsd:anyURI ] ;
fhir:code [ fhir:v "29463-7" ] ;
fhir:display [ fhir:v "Body Weight" ] # more generic methodless LOINC ] [
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" ] # translation is 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:effective [ fhir:v "2016-03-28"^^xsd:date] ; # encounter>
# <reference value="Encounter/example"/>
# </encounter
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)
#
