Personal Health Device Implementation Guide, published by HL7 International / Health Care Devices. This guide is not an authorized publication; it is the continuous build for version 2.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/phd/ and changes regularly. See the Directory of published versions

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Extension: Accuracy

Official URL: http://hl7.org/fhir/uv/phd/StructureDefinition/Accuracy				Version: 2.1.0
Standards status: Trial-use			Maturity Level: 3	Computable Name: Accuracy

The accuracy of a measurable quantity.

Context of Use

This extension may be used on the following element(s):

• Element ID: Observation
• Element ID: DeviceMetric
• Element ID: Observation.component

Usage info

Usage:

• Use this Extension: PhdCompoundNumericObservation, PhdCompoundObservation, PhdDeviceMetric and PhdNumericObservation
• Examples for this Extension: Observation/numeric-spotnumeric and Observation/temperature-observation

Formal Views of Extension Content

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

 

Other representations of profile: CSV, Excel, Schematron

Terminology Bindings

Path	Conformance	ValueSet	URI
Extension.value[x].comparator	required	QuantityComparator http://hl7.org/fhir/ValueSet/quantity-comparator|4.0.1 from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()