Shared Health Specification and Guide Version 5.0

 

Definitions for the dtprofile-codeableconcept Profile.

1. CodeableConcept
Definition

A concept that may be defined by a formal reference to a terminology or ontology or may be provided by text.

Control0..*
Comments

-

Max Length0
InvariantsDefined on this element
inv-1: Must have coding, text or both (: coding.exists() or text.exists())
2. CodeableConcept.id
Definition

unique id for the element within a resource (for internal references).

Control0..1
Typeid
Max Length0
3. CodeableConcept.extension
Definition

May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

Control0..*
TypeExtension
Alternate Namesextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Max Length0
4. CodeableConcept.coding
Definition

A reference to a code defined by a terminology system.

Control0..* This element is affected by the following invariants: inv-1
TypeCoding
Must Supporttrue
Requirements

Allows for translations and alternate encodings within a code system. Also supports communication of the same instance to systems requiring different encodings.

Comments

Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labelled as UserSelected = true.

Max Length0
5. CodeableConcept.coding.id
Definition

unique id for the element within a resource (for internal references).

Control0..1
Typeid
Max Length0
6. CodeableConcept.coding.extension
Definition

May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

Control0..*
TypeExtension
Alternate Namesextensions, user content
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Max Length0
7. CodeableConcept.coding.system
Definition

The identification of the code system that defines the meaning of the symbol in the code.

Control1..1
Typeuri
Must Supporttrue
Requirements

Need to be unambiguous about the source of the definition of the symbol.

Comments

This is the URI that represents the coding system as defined within the binding.

Max Length0
8. CodeableConcept.coding.version
Definition

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.

NoteThis is a business versionId, not a resource version id (see discussion)
Control0..1
Typestring
Comments

Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

Max Length0
9. CodeableConcept.coding.code
Definition

A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

Control1..1
Typecode
Must Supporttrue
Requirements

Need to refer to a particular code in the system.

Comments

This is the code as defined within the binding.

Max Length0
10. CodeableConcept.coding.display
Definition

A representation of the meaning of the code in the system, following the rules of the system.

Control0..1
Typestring
Must Supporttrue
Requirements

Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

Max Length0
11. CodeableConcept.coding.userSelected
Definition

Indicates that this coding was chosen by a user directly - i.e. off a pick list of available items (codes or displays).

Control0..1
Typeboolean
Requirements

This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

Comments

Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

Max Length0
12. CodeableConcept.text
Definition

A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

Control0..1 This element is affected by the following invariants: inv-1
Typestring
Must Supporttrue
Requirements

The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

Comments

Conformance Rule: This is the text used to convey the exact word that was displayed to the practitioner

Max Length5000