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ObservationDefinition2 FHIR Resource Proposal

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Owning work group name


Committee Approval Date:

Please enter the date that the committee approved this Resource proposal

Contributing or Reviewing Work Groups


FHIR Resource Development Project Insight ID

Ordering Service Interface Specification Project (1010)

Scope of coverage

An instance of ObservationDefinition represents the definitional aspects of a kind of observation. This resource is used in a catalog of products or services for healthcare. It provides the description of observations, which are used as input or produced as outcome of these products and services.

For instance, in a catalog of laboratory in vitro diagnostic services, the ObservationDefinition resources describe the observations that should be provided by the orderer alongside with an ordered service (questions asked at order entry or at specimen collection, prior results) as well as the observations that will be reported once the service has been performed.

In a catalog of medications, ObservationDefinition resources can be used to describe observations the result thereof need to be checked against the prescription of a particular medicinal product (therapeutic range, units ...)

In the catalog of tests of an in vitro diagnostic device, ObservationDefinition resources can be used to characterize (absolute range, unit, decimal precision, critical values ...) the observations that will be produced by the IVD tests performed by the device.

ObservationDefinition may be used to characterize observations from any discipline.

RIM scope

Observation class with moodCode="DEF"

Resource appropriateness

Expected implementations

Content sources

Example Scenarios

Resource Relationships


gForge Users

When Resource Proposal Is Complete

When you have completed your proposal, please send an email to

FMG Notes