This
page
is
part
of
the
Continuous
Integration
Build
of
FHIR
Specification
(v4.0.1:
R4
-
Mixed
Normative
and
STU
)
in
it's
permanent
home
(it
will
always
(will
be
available
incorrect/inconsistent
at
this
URL).
The
current
version
which
supercedes
this
version
is
5.0.0
.
For
a
full
list
of
available
versions,
see
times).
See
the
Directory
of
published
versions
.
Page
versions:
R5
R4B
R4
R3
Using
Codes
Code
Systems
Value
Sets
Concept
Maps
Identifier
Systems
4.3.14.201
Code
System
http://hl7.org/fhir/constraint-severity
Example
CodeSystem/action-required-behavior
(Turtle)
FHIR
Infrastructure
Responsible
Owner:
Clinical
Decision
Support
Work
Group
|
Maturity
Level
:
N
Normative
(from
v4.0.0)
Use
Context
Standards
Status
:
Any
This
is
a
code
system
defined
by
the
FHIR
project.
Summary
Defining
URL:
http://hl7.org/fhir/constraint-severity
Version:
4.0.1
Name:
ConstraintSeverity
Title:
ConstraintSeverity
Definition:
Informative
|
SHALL
applications
comply
with
this
constraint?
|
Committee:
FHIR
Infrastructure
-
Narrative
Work
Group
OID:
2.16.840.1.113883.4.642.4.82
(for
OID
based
terminology
systems)
Source
Resource
-
XML
/
JSON
This
Code
system
is
used
in
the
following
value
sets:
ValueSet:
ConstraintSeverity
(SHALL
applications
comply
with
this
constraint?)
ValueSet:
ConstraintSeverity
(SHALL
applications
comply
with
this
constraint?)
4.3.14.201.1
Content
-
4.3.14.201.2
JSON
ConstraintSeverity
-
TTL
SHALL
applications
comply
with
this
constraint?
This
code
system
http://hl7.org/fhir/constraint-severity
defines
the
following
codes:
Code
Display
Definition
error
Error
If
the
constraint
is
violated,
the
resource
is
not
conformant.
warning
Raw
Turtle
Warning
If
the
constraint
is
violated,
the
resource
is
conformant,
but
it
is
not
necessarily
following
best
practice.
See
the
full
registry
of
code
systems
(+
also
see
Turtle/RDF
Format
Specification
defined
as
part
of
FHIR.
)
Explanation
of
the
columns
that
may
appear
on
this
page:
Level
A
few
code
lists
that
FHIR
defines
are
hierarchical
-
each
code
is
assigned
a
level.
See
Code
System
Definition
for
further
information.
Source
The
source
of
the
definition
of
the
code
(when
the
value
set
draws
in
codes
defined
elsewhere)
Code
The
code
(used
as
the
code
in
the
resource
instance).
If
the
code
is
in
italics,
this
indicates
SystemActionRequiredBehavior
@prefix fhir: <http://hl7.org/fhir/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
# - resource -------------------------------------------------------------------
<http://hl7.org/fhir/CodeSystem/action-required-behavior> a fhir:CodeSystem ;
fhir:nodeRole fhir:treeRoot ;
fhir:id [ fhir:v "action-required-behavior"] ; #
fhir:meta [
fhir:lastUpdated [ fhir:v "2025-11-27T16:48:47.349+00:00"^^xsd:dateTime ]
] ; #
fhir:text [
fhir:status [ fhir:v "generated" ] ;
fhir:div [ fhir:v "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem action-required-behavior</b></p><a name=\"action-required-behavior\"> </a><a name=\"hcaction-required-behavior\"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/action-required-behavior</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">must<a name=\"action-required-behavior-must\"> </a></td><td>Must</td><td>An action with this behavior must be included in the actions processed by the end user; the end user SHALL NOT choose not to include this action.</td></tr><tr><td style=\"white-space:nowrap\">could<a name=\"action-required-behavior-could\"> </a></td><td>Could</td><td>An action with this behavior may be included in the set of actions processed by the end user.</td></tr><tr><td style=\"white-space:nowrap\">must-unless-documented<a name=\"action-required-behavior-must-unless-documented\"> </a></td><td>Must Unless Documented</td><td>An action with this behavior must be included in the set of actions processed by the end user, unless the end user provides documentation as to why the action was not included.</td></tr></table></div>"^^rdf:XMLLiteral ]
] ; #
fhir:extension ( [
fhir:url [
fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"^^xsd:anyURI ;
fhir:l <http://hl7.org/fhir/StructureDefinition/structuredefinition-wg>
] ;
fhir:value [
a fhir:Code ;
fhir:v "cds"
]
] [
fhir:url [
fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"^^xsd:anyURI ;
fhir:l <http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status>
] ;
fhir:value [
a fhir:Code ;
fhir:v "normative"
]
] [
fhir:url [
fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"^^xsd:anyURI ;
fhir:l <http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm>
] ;
fhir:value [
a fhir:Integer ;
fhir:v 4
]
] ) ; #
fhir:url [
fhir:v "http://hl7.org/fhir/action-required-behavior"^^xsd:anyURI ;
fhir:l <http://hl7.org/fhir/action-required-behavior>
] ; #
fhir:identifier ( [
fhir:system [
fhir:v "urn:ietf:rfc:3986"^^xsd:anyURI ;
fhir:l <urn:ietf:rfc:3986>
] ;
fhir:value [ fhir:v "urn:oid:2.16.840.1.113883.4.642.4.804" ]
] [
fhir:use [ fhir:v "old" ] ;
fhir:system [
fhir:v "urn:ietf:rfc:3986"^^xsd:anyURI ;
fhir:l <urn:ietf:rfc:3986>
] ;
fhir:value [ fhir:v "urn:oid:2.16.840.1.113883.4.642.1.787" ]
] ) ; #
fhir:version [ fhir:v "6.0.0-ballot3"] ; #
fhir:name [ fhir:v "ActionRequiredBehavior"] ; #
fhir:title [ fhir:v "Action Required Behavior"] ; #
fhir:status [ fhir:v "active"] ; #
fhir:experimental [ fhir:v false] ; #
fhir:date [ fhir:v "2021-01-05T10:01:24+11:00"^^xsd:dateTime] ; #
fhir:publisher [ fhir:v "HL7 (FHIR Project)"] ; #
fhir:contact ( [
fhir:telecom ( [
fhir:system [ fhir:v "url" ] ;
fhir:value [ fhir:v "http://hl7.org/fhir" ]
] [
fhir:system [ fhir:v "email" ] ;
fhir:value [ fhir:v "fhir@lists.hl7.org" ]
] )
] ) ; #
fhir:description [ fhir:v "Defines expectations around whether an action or action group is required."] ; #
fhir:jurisdiction ( [
fhir:coding ( [
fhir:system [
fhir:v "http://unstats.un.org/unsd/methods/m49/m49.htm"^^xsd:anyURI ;
fhir:l <http://unstats.un.org/unsd/methods/m49/m49.htm>
] ;
fhir:code [ fhir:v "001" ] ;
fhir:display [ fhir:v "World" ]
] )
] ) ; #
fhir:caseSensitive [ fhir:v true] ; #
fhir:valueSet [
fhir:v "http://hl7.org/fhir/ValueSet/action-required-behavior"^^xsd:anyURI ;
fhir:l <http://hl7.org/fhir/ValueSet/action-required-behavior>
] ; #
fhir:hierarchyMeaning [] ; #
fhir:content [ fhir:v "complete"] ; #
fhir:concept ( [
fhir:code [ fhir:v "must" ] ;
fhir:display [ fhir:v "Must" ] ;
fhir:definition [ fhir:v "An action with this behavior must be included in the actions processed by the end user; the end user SHALL NOT choose not to include this action." ]
] [
fhir:code [ fhir:v "could" ] ;
fhir:display [ fhir:v "Could" ] ;
fhir:definition [ fhir:v "An action with this behavior may be included in the set of actions processed by the end user." ]
] [
fhir:code [ fhir:v "must-unless-documented" ] ;
fhir:display [ fhir:v "Must Unless Documented" ] ;
fhir:definition [ fhir:v "An action with this behavior must be included in the set of actions processed by the end user, unless the end user provides documentation as to why the action was not included." ]
] ) . #
# -------------------------------------------------------------------------------------
Usage
note:
every
effort
has
been
made
to
ensure
that
the
code
is
examples
are
correct
and
useful,
but
they
are
not
selectable
('Abstract')
Display
The
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
Definition
An
explanation
of
the
meaning
normative
part
of
the
concept
Comments
Additional
notes
about
how
to
use
the
code
specification.