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See the Directory of published versions Value Set

Orders and Observations Work Group Maturity Level: 1Trial Use Use Context: Not yet ready for Production use

This is a value set defined by the FHIR project.


Defining URL:
Title:Observation Reference Range Meaning Codes

This value set defines a set of codes that can be used to indicate the meaning/use of a reference range for a particular target population.

Committee:Orders and Observations Work Group
OID:2.16.840.1.113883.4.642.3.397 (for OID based terminology systems)
Source ResourceXML / JSON

This value set is used in the following places:


This expansion generated 01 Jul 2022

This value set contains 13 concepts

Expansion based on Observation Reference Range Meaning Codes v0.1.0 (CodeSystem)

All codes in this table are from the system

0type TypeGeneral types of reference range.
1  normal Normal RangeValues expected for a normal member of the relevant control population being measured. Typically each results producer such as a laboratory has specific normal ranges and they are usually defined as within two standard deviations from the mean and account for 95.45% of this population.
1  recommended Recommended RangeThe range that is recommended by a relevant professional body.
1  treatment Treatment RangeThe range at which treatment would/should be considered.
1  therapeutic Therapeutic Desired LevelThe optimal range for best therapeutic outcomes.
2    pre Pre Therapeutic Desired LevelThe optimal range for best therapeutic outcomes for a specimen taken immediately before administration.
2    post Post Therapeutic Desired LevelThe optimal range for best therapeutic outcomes for a specimen taken immediately after administration.
0endocrine EndocrineEndocrine related states that change the expected value.
1  pre-puberty Pre-PubertyAn expected range in an individual prior to puberty.
1  follicular Follicular StageAn expected range in an individual during the follicular stage of the cycle.
1  midcycle MidCycleAn expected range in an individual during the midcycle stage of the cycle.
1  luteal LutealAn expected range in an individual during the luteal stage of the cycle.
1  postmenopausal Post-MenopauseAn expected range in an individual post-menopause.


See the full registry of value sets defined as part of FHIR.

Explanation of the columns that may appear on this page:

LvlA few code lists that FHIR defines are hierarchical - each code is assigned a level. For value sets, levels are mostly used to organize codes for user convenience, but may follow code system hierarchy - see Code System for further information
SourceThe source of the definition of the code (when the value set draws in codes defined elsewhere)
CodeThe code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')
DisplayThe display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
DefinitionAn explanation of the meaning of the concept
CommentsAdditional notes about how to use the code