R4 Draft for Comment

This page is part of the FHIR Specification (v3.2.0: R4 Ballot 1). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R4B R4 R3

4.2.12.6 Code System http://hl7.org/fhir/data-absent-reason

Vocabulary Work Group Maturity Level: 0Informative Use Context: Any

This is a code system defined by the FHIR project.

Summary

Defining URL:http://hl7.org/fhir/data-absent-reason
Name:DataAbsentReason
Definition:

Used to specify why the normally expected content of the data element is missing.

Committee:??
OID:2.16.840.1.113883.4.642.1.6 (for OID based terminology systems)
Source ResourceXML / JSON

This Code system is used in the following value sets:

  • Observation Value Absent Reason (This value set defines the set of codes for identifying the reason why the expected result in Observation.value[x] is missing.)
  • DataAbsentReason (Used to specify why the normally expected content of the data element is missing.)

4.2.12.6.1 Content

4.2.12.6.2 DataAbsentReason

Used to specify why the normally expected content of the data element is missing.

This code system http://hl7.org/fhir/data-absent-reason defines the following codes:

LvlCodeDisplayDefinitionComments
1unknown UnknownThe value is not known.
1asked AskedThe source human does not know the value.
1temp TempThere is reason to expect (from the workflow) that the value may become known.
1not-asked Not AskedThe workflow didn't lead to this value being known.
1masked MaskedThe information is not available due to security, privacy or related reasons.Using "masked" may be breach of security or confidentiality, but there are times when its use is required to support alternate workflows for gaining access to denied information.
1unsupported UnsupportedThe source system wasn't capable of supporting this element.
1astext As TextThe content of the data is represented in the resource narrative.it may be linked by internal references (e.g. xml:id). This usually implies that the value could not be represented in the correct format - this may be due to system limitations, or this particular data value
1error ErrorSome system or workflow process error means that the information is not available.
2  NaN Not a NumberNaN, standing for not a number, is a numeric data type value representing an undefined or unrepresentable value.This is sometimes an output value from measuring devices
1not-performed Not PerformedThe value is not available because the observation procedure (test, etc.) was not performed.

 

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. 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