"The identification of the code system that defines the meaning of the symbol in the code." - HL7 FHIR, Coding.system
Note that in FHIR, Coding.system is a URI pointing to the code system (which presumes that each code system has a URI, and that each has a separate URI for each version of the code system). In the FHIM, we've made this a separate class to show how the logical pieces of a code system identifier would be made up.

Attributes
String	codeSystemId	This property identifies the coding scheme or coding system of which the code is a member. Note that this property will be replaced by some other concept or group of concepts when this abstract class is replaced by a specific class for a given target platform. "The identification of the code system that defines the meaning of the symbol in the code." - HL7 FHIR, Coding.system
String	codeSystemName	This property identifies the coding scheme or coding system of which the code is a member. Note that this property will be replaced by some other concept or group of concepts when this abstract class is replaced by a specific class for a given target platform. "The identification of the code system that defines the meaning of the symbol in the code." - HL7 FHIR, Coding.system
String	codeSystemVersion	This property identifies the release name or version of the coding scheme or coding system of which the code is a member. This version number identifies the possible members of a coding system as of a particular time. If a coding system isn't formally versioned, such as NDC, the date on which the coding system was published could be used here. Note that this property will be replaced by some other concept or group of concepts when this abstract class is replaced by a specific class for a given target platform. "The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged." - HL7 FHIR, Coding.version.

 codeSystemId

Public String codeSystemId

This property identifies the coding scheme or coding system of which the code is a member.
Note that this property will be replaced by some other concept or group of concepts when this abstract class is replaced by a specific class for a given target platform.
"The identification of the code system that defines the meaning of the symbol in the code." - HL7 FHIR, Coding.system

Constraints:

Properties:

Aggregation	None
Alias
Association
Association End
Class	CodeSystem
Datatype
Default
Default Value
Is Composite	false
Is Derived	false
Is Derived Union	false
Is Leaf	false
Is Ordered	false
Is Read Only	false
Is Static	false
Is Unique	true
Keywords
Lower	1
Lower Value	(1)
Multiplicity	1..*
Name	codeSystemId
Name Expression
Namespace	CodeSystem
Opposite
Owner	CodeSystem
Owning Association
Owning Template Parameter
Qualified Name	FHIM::Datatypes::CodeSystem::codeSystemId
Stereotype
Template Parameter
Type	String
Upper	*
Upper Value	(*)
Visibility	Public

 codeSystemName

Public String codeSystemName

This property identifies the coding scheme or coding system of which the code is a member.
Note that this property will be replaced by some other concept or group of concepts when this abstract class is replaced by a specific class for a given target platform.
"The identification of the code system that defines the meaning of the symbol in the code." - HL7 FHIR, Coding.system

Constraints:

Properties:

Aggregation	None
Alias
Association
Association End
Class	CodeSystem
Datatype
Default
Default Value
Is Composite	false
Is Derived	false
Is Derived Union	false
Is Leaf	false
Is Ordered	false
Is Read Only	false
Is Static	false
Is Unique	true
Keywords
Lower	0
Lower Value	(0)
Multiplicity	0..1
Name	codeSystemName
Name Expression
Namespace	CodeSystem
Opposite
Owner	CodeSystem
Owning Association
Owning Template Parameter
Qualified Name	FHIM::Datatypes::CodeSystem::codeSystemName
Stereotype
Template Parameter
Type	String
Upper	1
Upper Value	(1)
Visibility	Public

 codeSystemVersion

Public String codeSystemVersion

This property identifies the release name or version of the coding scheme or coding system of which the code is a member. This version number identifies the possible members of a coding system as of a particular time. If a coding system isn't formally versioned, such as NDC, the date on which the coding system was published could be used here.
Note that this property will be replaced by some other concept or group of concepts when this abstract class is replaced by a specific class for a given target platform.
"The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged." - HL7 FHIR, Coding.version.

Constraints:

Properties:

Aggregation	None
Alias
Association
Association End
Class	CodeSystem
Datatype
Default
Default Value
Is Composite	false
Is Derived	false
Is Derived Union	false
Is Leaf	false
Is Ordered	false
Is Read Only	false
Is Static	false
Is Unique	true
Keywords
Lower	0
Lower Value	(0)
Multiplicity	0..1
Name	codeSystemVersion
Name Expression
Namespace	CodeSystem
Opposite
Owner	CodeSystem
Owning Association
Owning Template Parameter
Qualified Name	FHIM::Datatypes::CodeSystem::codeSystemVersion
Stereotype
Template Parameter
Type	String
Upper	1
Upper Value	(1)
Visibility	Public