IE (Ireland) Core Implementation Guide
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Data Type Profile: IECoreIndividualHealthcareIdentifier - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 3

Definitions for the ie-core-individual-healthcare-identifier data type profile.

Guidance on how to interpret the contents of this table can be found here

0. Identifier
Definition

Individual Healthcare Identifier (IHI) assigned under the HI Service to a patient.


An identifier - identifies some entity uniquely and unambiguously. Typically this is used for business identifiers.

ShortIndividual Healthcare Identifier (IHI)An identifier intended for computation
Control0..*
This element is affected by the following invariants: ele-1
Is Modifierfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ie-core-ihi-0: IHI shall be an exactly 18 digit number (value.matches('^([0-9]{18})$'))
ie-core-ihi-1: IHI shall pass the position 17 modulus 11 check digit (( ( (select(value.substring(0,1).toInteger()).select($this*17))+ (select(value.substring(1,1).toInteger()).select($this*16))+ (select(value.substring(2,1).toInteger()).select($this*15))+ (select(value.substring(3,1).toInteger()).select($this*14))+ (select(value.substring(4,1).toInteger()).select($this*13))+ (select(value.substring(5,1).toInteger()).select($this*12))+ (select(value.substring(6,1).toInteger()).select($this*11))+ (select(value.substring(7,1).toInteger()).select($this*10))+ (select(value.substring(8,1).toInteger()).select($this*9))+ (select(value.substring(9,1).toInteger()).select($this*8))+ (select(value.substring(10,1).toInteger()).select($this*7))+ (select(value.substring(11,1).toInteger()).select($this*6))+ (select(value.substring(12,1).toInteger()).select($this*5))+ (select(value.substring(13,1).toInteger()).select($this*4))+ (select(value.substring(14,1).toInteger()).select($this*3))+ (select(value.substring(15,1).toInteger()).select($this*2))+ (select(value.substring(16,1).toInteger()).select($this)) )mod 11=0 ))
ie-core-ihi-2: IHI shall pass the position 18 GS1 check digit (( ( (select(value.substring(0,1).toInteger()).select($this*3))+ (value.substring(1,1).toInteger())+ (select(value.substring(2,1).toInteger()).select($this*3))+ (value.substring(3,1).toInteger())+ (select(value.substring(4,1).toInteger()).select($this*3))+ (value.substring(5,1).toInteger())+ (select(value.substring(6,1).toInteger()).select($this*3))+ (value.substring(7,1).toInteger())+ (select(value.substring(8,1).toInteger()).select($this*3))+ (value.substring(9,1).toInteger())+ (select(value.substring(10,1).toInteger()).select($this*3))+ (value.substring(11,1).toInteger())+ (select(value.substring(12,1).toInteger()).select($this*3))+ (value.substring(13,1).toInteger())+ (select(value.substring(14,1).toInteger()).select($this*3))+ (value.substring(15,1).toInteger())+ (select(value.substring(16,1).toInteger()).select($this*3))+ (value.substring(17,1).toInteger()) )mod 10=0 ))
2. Identifier.extension:ihiStatus
Slice NameihiStatus
Definition

IHI number status associated with an IHI identifier.

ShortIHI status
Control0..1
TypeExtension(IE Core IHI Status) (Extension Type: Coding)
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
4. Identifier.extension:ihiRecordStatus
Slice NameihiRecordStatus
Definition

Known IHI record status associated with an IHI identifier.

ShortIHI record status
Control0..1
TypeExtension(IE Core IHI Record Status) (Extension Type: Coding)
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
6. Identifier.extension:ihiVerifiedDate
Slice NameihiVerifiedDate
Definition

The date, and optionally time, that the IHI was verified with HI Services.

ShortIHI Verification Date
Control0..1
TypeExtension(IE Core IHI Verification Date) (Extension Type: dateTime)
Is Modifierfalse
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
8. Identifier.use
Definition

The purpose of this identifier.

Shortusual | official | temp | secondary | old (If known)
Comments

Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

Control0..1
BindingThe codes SHALL be taken from IdentifierUsehttp://hl7.org/fhir/ValueSet/identifier-use|4.0.1
(required to http://hl7.org/fhir/ValueSet/identifier-use|4.0.1)

Identifies the purpose for this identifier, if known .

Typecode
Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. Identifier.type
Definition

A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.

ShortDescription of identifier
Comments

This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.

Control10..1
BindingUnless not suitable, these codes SHALL be taken from Identifier Type Codeshttp://hl7.org/fhir/ValueSet/identifier-type
(extensible to http://hl7.org/fhir/ValueSet/identifier-type)

A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.

TypeCodeableConcept
Is Modifierfalse
Summarytrue
Requirements

Allows users to make use of identifiers when the identifier system is not known.

Pattern Value{
  "coding" : [{
    "system" : "http://terminology.hl7.org/CodeSystem/v2-0203",
    "code" : "NI"
  }]
}
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
12. Identifier.system
Definition

Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

ShortThe namespace for the identifier value
Comments

Identifier.system is always case sensitive.

Control10..1
Typeuri
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Requirements

There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

Fixed Valuehttp://iehr.ai/fhir/sid/ie/hse/ihi
Example<br/><b>General</b>:http://www.acme.com/identifiers/patient
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
14. Identifier.value
Definition

The portion of the identifier typically relevant to the user and which is unique within the context of the system.

ShortIHIThe value that is unique
Comments

This concept is equivalent to HSE Individual Health Identifier (IHI).


If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.

Control10..1
This element is affected by the following invariants: ie-core-ihi-0, ie-core-ihi-1, ie-core-ihi-2
Typestring
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Summarytrue
Max Length:18
Example<br/><b>General</b>:123456
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))