PREFIX fhir: <http://hl7.org/fhir/> 
PREFIX fhirvs: <http://hl7.org/fhir/ValueSet/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> 
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> 

IMPORT <uri.shex>
IMPORT <code.shex>
IMPORT <date.shex>
IMPORT <string.shex>
IMPORT <Coding.shex>
IMPORT <Period.shex>
IMPORT <boolean.shex>
IMPORT <integer.shex>
IMPORT <decimal.shex>
IMPORT <dateTime.shex>
IMPORT <markdown.shex>
IMPORT <canonical.shex>
IMPORT <Identifier.shex>
IMPORT <unsignedInt.shex>
IMPORT <UsageContext.shex>
IMPORT <ContactDetail.shex>
IMPORT <DomainResource.shex>
IMPORT <CodeableConcept.shex>
IMPORT <RelatedArtifact.shex>
IMPORT <BackboneElement.shex>

start=@<CodeSystem> AND {fhir:nodeRole [fhir:treeRoot]}

# Declares the existence of and describes a code system or code system supplement
<CodeSystem> EXTENDS @<DomainResource> CLOSED {   
    a [fhir:CodeSystem]?;fhir:nodeRole [fhir:treeRoot]?;

    fhir:url @<uri>?;                       # Canonical identifier for this code 
                                            # system, represented as a URI 
                                            # (globally unique) (Coding.system) 
    fhir:identifier @<OneOrMore_Identifier>?;  # Additional identifier for the code 
                                            # system (business identifier) 
    fhir:version @<string>?;                # Business version of the code 
                                            # system (Coding.version) 
    fhir:versionAlgorithm @<string>  OR 
    			@<Coding>  ?;  # How to compare versions
    fhir:name @<string>?;                   # Name for this code system 
                                            # (computer friendly) 
    fhir:title @<string>?;                  # Name for this code system (human 
                                            # friendly) 
    fhir:status @<code> AND
    	{fhir:v @fhirvs:publication-status};  # draft | active | retired | unknown
    fhir:experimental @<boolean>?;          # For testing purposes, not real 
                                            # usage 
    fhir:date @<dateTime>?;                 # Date last changed
    fhir:publisher @<string>?;              # Name of the publisher/steward 
                                            # (organization or individual) 
    fhir:contact @<OneOrMore_ContactDetail>?;  # Contact details for the publisher
    fhir:description @<markdown>?;          # Natural language description of 
                                            # the code system 
    fhir:useContext @<OneOrMore_UsageContext>?;  # The context that the content is 
                                            # intended to support 
    fhir:jurisdiction @<OneOrMore_CodeableConcept>?;  # Intended jurisdiction for code 
                                            # system (if applicable) 
    fhir:purpose @<markdown>?;              # Why this code system is defined
    fhir:copyright @<markdown>?;            # Use and/or publishing restrictions
    fhir:copyrightLabel @<string>?;         # Copyright holder and year(s)
    fhir:approvalDate @<date>?;             # When the CodeSystem was approved 
                                            # by publisher 
    fhir:lastReviewDate @<date>?;           # When the CodeSystem was last 
                                            # reviewed by the publisher 
    fhir:effectivePeriod @<Period>?;        # When the CodeSystem is expected to 
                                            # be used 
    fhir:topic @<OneOrMore_CodeableConcept>?;  # E.g. Education, Treatment, 
                                            # Assessment, etc 
    fhir:author @<OneOrMore_ContactDetail>?;  # Who authored the CodeSystem
    fhir:editor @<OneOrMore_ContactDetail>?;  # Who edited the CodeSystem
    fhir:reviewer @<OneOrMore_ContactDetail>?;  # Who reviewed the CodeSystem
    fhir:endorser @<OneOrMore_ContactDetail>?;  # Who endorsed the CodeSystem
    fhir:relatedArtifact @<OneOrMore_RelatedArtifact>?;  # Additional documentation, 
                                            # citations, etc 
    fhir:caseSensitive @<boolean>?;         # If code comparison is case 
                                            # sensitive 
    fhir:valueSet @<canonical>?;            # Canonical reference to the value 
                                            # set with entire code system 
    fhir:hierarchyMeaning @<code> AND
    	{fhir:v @fhirvs:codesystem-hierarchy-meaning}?;  # grouped-by | is-a | part-of | 
                                            # classified-with 
    fhir:compositional @<boolean>?;         # If code system defines a 
                                            # compositional grammar 
    fhir:versionNeeded @<boolean>?;         # If definitions are not stable
    fhir:content @<code> AND
    	{fhir:v @fhirvs:codesystem-content-mode};  # not-present | example | fragment | 
                                            # complete | supplement 
    fhir:supplements @<canonical>?;         # Canonical URL of Code System this 
                                            # adds designations and properties 
                                            # to 
    fhir:count @<unsignedInt>?;             # Total concepts in the code system
    fhir:filter @<OneOrMore_CodeSystem.filter>?;  # Filter that can be used in a value 
                                            # set 
    fhir:property @<OneOrMore_CodeSystem.property>?;  # Additional information supplied 
                                            # about each concept 
    fhir:concept @<OneOrMore_CodeSystem.concept>?;  # Concepts in the code system
}  

# Additional information supplied about each concept
<CodeSystem.property> EXTENDS @<BackboneElement> CLOSED {   
    fhir:code @<code>;                      # Identifies the property on the 
                                            # concepts, and when referred to in 
                                            # operations 
    fhir:uri @<uri>?;                       # Formal identifier for the property
    fhir:description @<string>?;            # Why the property is defined, 
                                            # and/or what it conveys 
    fhir:type @<code> AND
    	{fhir:v @fhirvs:concept-property-type};  # code | Coding | string | integer | 
                                            # boolean | dateTime | decimal 
}  

# Additional representations for the concept
<CodeSystem.concept.designation> EXTENDS @<BackboneElement> CLOSED {   
    fhir:language @<code> AND
    	{fhir:v @fhirvs:all-languages}?;  # Human language of the designation
    fhir:use @<Coding>?;                    # Details how this designation would 
                                            # be used 
    fhir:additionalUse @<OneOrMore_Coding>?;  # Additional ways how this 
                                            # designation would be used 
    fhir:value @<string>;                   # The text value for this designation
}  

# Filter that can be used in a value set
<CodeSystem.filter> EXTENDS @<BackboneElement> CLOSED {   
    fhir:code @<code>;                      # Code that identifies the filter
    fhir:description @<string>?;            # How or why the filter is used
    fhir:operator @<OneOrMore_code> AND
    	{fhir:v @fhirvs:filter-operator};  # = | is-a | descendent-of | 
                                            # is-not-a | regex | in | not-in | 
                                            # generalizes | child-of | 
                                            # descendent-leaf | exists 
    fhir:value @<string>;                   # What to use for the value
}  

# Property value for the concept
<CodeSystem.concept.property> EXTENDS @<BackboneElement> CLOSED {   
    fhir:code @<code>;                      # Reference to 
                                            # CodeSystem.property.code 
    fhir:value @<code>  OR 
    			@<Coding>  OR 
    			@<string>  OR 
    			@<integer>  OR 
    			@<boolean>  OR 
    			@<dateTime>  OR 
    			@<decimal>  ;  # Value of the property for this 
                                            # concept 
}  

# Concepts in the code system
<CodeSystem.concept> EXTENDS @<BackboneElement> CLOSED {   
    fhir:code @<code>;                      # Code that identifies concept
    fhir:display @<string>?;                # Text to display to the user
    fhir:definition @<string>?;             # Formal definition
    fhir:designation @<OneOrMore_CodeSystem.concept.designation>?;  # Additional representations for the 
                                            # concept 
    fhir:property @<OneOrMore_CodeSystem.concept.property>?;  # Property value for the concept
    fhir:concept @<OneOrMore_CodeSystem.concept>?;  # Child Concepts 
                                            # (is-a/contains/categorizes) 
}  

# Child Concepts (is-a/contains/categorizes)
<CodeSystem.concept.conceptnull> CLOSED {   
}  

#---------------------- Cardinality Types (OneOrMore) -------------------
<OneOrMore_Identifier> CLOSED {
    rdf:first @<Identifier>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_Identifier> 
}
<OneOrMore_ContactDetail> CLOSED {
    rdf:first @<ContactDetail>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_ContactDetail> 
}
<OneOrMore_UsageContext> CLOSED {
    rdf:first @<UsageContext>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_UsageContext> 
}
<OneOrMore_CodeableConcept> CLOSED {
    rdf:first @<CodeableConcept>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_CodeableConcept> 
}
<OneOrMore_RelatedArtifact> CLOSED {
    rdf:first @<RelatedArtifact>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_RelatedArtifact> 
}
<OneOrMore_CodeSystem.filter> CLOSED {
    rdf:first @<CodeSystem.filter>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_CodeSystem.filter> 
}
<OneOrMore_CodeSystem.property> CLOSED {
    rdf:first @<CodeSystem.property>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_CodeSystem.property> 
}
<OneOrMore_CodeSystem.concept> CLOSED {
    rdf:first @<CodeSystem.concept>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_CodeSystem.concept> 
}
<OneOrMore_Coding> CLOSED {
    rdf:first @<Coding>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_Coding> 
}
<OneOrMore_code> CLOSED {
    rdf:first @<code>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_code> 
}
<OneOrMore_CodeSystem.concept.designation> CLOSED {
    rdf:first @<CodeSystem.concept.designation>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_CodeSystem.concept.designation> 
}
<OneOrMore_CodeSystem.concept.property> CLOSED {
    rdf:first @<CodeSystem.concept.property>  ;
    rdf:rest [rdf:nil] OR @<OneOrMore_CodeSystem.concept.property> 
}

#---------------------- Value Sets ------------------------

# This value set includes all possible codes from BCP-47 (see http://tools.ietf.org/html/bcp47)
fhirvs:all-languages xsd:string #EXTERNAL

# The extent of the content of the code system (the concepts and codes it defines) are represented in a code system resource.
fhirvs:codesystem-content-mode ["not-present" "example" "fragment" "complete" "supplement"]

# The meaning of the hierarchy of concepts in a code system.
fhirvs:codesystem-hierarchy-meaning ["grouped-by" "is-a" "part-of" "classified-with"]

# The type of a property value.
fhirvs:concept-property-type ["code" "Coding" "string" "integer" "boolean" "dateTime" "decimal"]

# The kind of operation to perform as a part of a property based filter.
fhirvs:filter-operator ["=" "is-a" "descendent-of" "is-not-a" "regex" "in" "not-in" "generalizes" "child-of" "descendent-leaf" "exists"]

# The lifecycle status of an artifact.
fhirvs:publication-status ["draft" "active" "retired" "unknown"]