Observation

Normative Clinical — Diagnostics

Measurements and simple assertions made about a patient, device or other subject.

Endpoints

alphahttps://api.dev.ovok.com/fhir/R4/Observation

Interaction	Method	Path
Read	GET	/fhir/R4/Observation/[id]
Vread	GET	/fhir/R4/Observation/[id]/_history/[vid]
Update	PUT	/fhir/R4/Observation/[id]
Patch	PATCH	/fhir/R4/Observation/[id]
Delete	DELETE	/fhir/R4/Observation/[id]
Create	POST	/fhir/R4/Observation
Search	GET	/fhir/R4/Observation
History	GET	/fhir/R4/Observation/[id]/_history

Top-level elements

Element	Type(s)	Cardinality	Description
identifier	Identifier	0..*	Business Identifier for observation
basedOn	Reference	0..*	Fulfills plan, proposal or order
partOf	Reference	0..*	Part of referenced event
status	code	1..1	registered | preliminary | final | amended + modifier
category	CodeableConcept	0..*	Classification of type of observation
code	CodeableConcept	1..1	Type of observation (code / type)
subject	Reference	0..1	Who and/or what the observation is about
focus	Reference	0..*	What the observation is about, when it is not about the subject of record
encounter	Reference	0..1	Healthcare event during which this observation is made
effective[x]	dateTime / Period / Timing / instant	0..1	Clinically relevant time/time-period for observation
issued	instant	0..1	Date/Time this version was made available
performer	Reference	0..*	Who is responsible for the observation
value[x]	Quantity / CodeableConcept / string / boolean / integer / Range / Ratio / SampledData / time / dateTime / Period	0..1	Actual result
dataAbsentReason	CodeableConcept	0..1	Why the result is missing
interpretation	CodeableConcept	0..*	High, low, normal, etc.
note	Annotation	0..*	Comments about the observation
bodySite	CodeableConcept	0..1	Observed body part
method	CodeableConcept	0..1	How it was done
specimen	Reference	0..1	Specimen used for this observation
device	Reference	0..1	(Measurement) Device
referenceRange	BackboneElement	0..*	Provides guide for interpretation
hasMember	Reference	0..*	Related resource that belongs to the Observation group
derivedFrom	Reference	0..*	Related measurements the observation is made from
component	BackboneElement	0..*	Component results

Resource-specific search parameters

Parameter	Type	Description
_compartment	string
_count	string	https://www.hl7.org/fhir/search.html#_count
_elements	string	https://www.hl7.org/fhir/search.html#_elements
_id	string
_lastUpdated	string
_profile	string
_security	string
_sort	string	https://www.hl7.org/fhir/search.html#_sort
_source	string
_summary	string	https://www.hl7.org/fhir/search.html#_summary
_tag	string
_total	string	https://www.hl7.org/fhir/search.html#_total
based-on	string	http://hl7.org/fhir/SearchParameter/Observation-based-on
category	string	http://hl7.org/fhir/SearchParameter/Observation-category
code	string	http://hl7.org/fhir/SearchParameter/clinical-code
code-value-concept	string	http://hl7.org/fhir/SearchParameter/Observation-code-value-concept
code-value-date	string	http://hl7.org/fhir/SearchParameter/Observation-code-value-date
code-value-quantity	string	http://hl7.org/fhir/SearchParameter/Observation-code-value-quantity
code-value-string	string	http://hl7.org/fhir/SearchParameter/Observation-code-value-string
combo-code	string	http://hl7.org/fhir/SearchParameter/Observation-combo-code
combo-code-value-concept	string	http://hl7.org/fhir/SearchParameter/Observation-combo-code-value-concept
combo-code-value-quantity	string	http://hl7.org/fhir/SearchParameter/Observation-combo-code-value-quantity
combo-data-absent-reason	string	http://hl7.org/fhir/SearchParameter/Observation-combo-data-absent-reason
combo-value-concept	string	http://hl7.org/fhir/SearchParameter/Observation-combo-value-concept
combo-value-quantity	string	http://hl7.org/fhir/SearchParameter/Observation-combo-value-quantity
component-code	string	http://hl7.org/fhir/SearchParameter/Observation-component-code
component-code-value-concept	string	http://hl7.org/fhir/SearchParameter/Observation-component-code-value-concept
component-code-value-quantity	string	http://hl7.org/fhir/SearchParameter/Observation-component-code-value-quantity
component-data-absent-reason	string	http://hl7.org/fhir/SearchParameter/Observation-component-data-absent-reason
component-value-concept	string	http://hl7.org/fhir/SearchParameter/Observation-component-value-concept
component-value-quantity	string	http://hl7.org/fhir/SearchParameter/Observation-component-value-quantity
data-absent-reason	string	http://hl7.org/fhir/SearchParameter/Observation-data-absent-reason
date	string	http://hl7.org/fhir/SearchParameter/clinical-date
derived-from	string	http://hl7.org/fhir/SearchParameter/Observation-derived-from
device	string	http://hl7.org/fhir/SearchParameter/Observation-device
encounter	string	http://hl7.org/fhir/SearchParameter/clinical-encounter
focus	string	http://hl7.org/fhir/SearchParameter/Observation-focus
has-member	string	http://hl7.org/fhir/SearchParameter/Observation-has-member
identifier	string	http://hl7.org/fhir/SearchParameter/clinical-identifier
method	string	http://hl7.org/fhir/SearchParameter/Observation-method
part-of	string	http://hl7.org/fhir/SearchParameter/Observation-part-of
patient	string	http://hl7.org/fhir/SearchParameter/clinical-patient
performer	string	http://hl7.org/fhir/SearchParameter/Observation-performer
specimen	string	http://hl7.org/fhir/SearchParameter/Observation-specimen
status	string	http://hl7.org/fhir/SearchParameter/Observation-status
subject	string	http://hl7.org/fhir/SearchParameter/Observation-subject
value-concept	string	http://hl7.org/fhir/SearchParameter/Observation-value-concept
value-date	string	http://hl7.org/fhir/SearchParameter/Observation-value-date
value-quantity	string	http://hl7.org/fhir/SearchParameter/Observation-value-quantity
value-string	string	http://hl7.org/fhir/SearchParameter/Observation-value-string

Reference

• Official FHIR R4 spec: Observation
• Maturity: Normative (FMM 5).