description: This structure holds the danish [CPR](https://cpr.dk/) identifier
package_name: hl7.fhir.dk.core
derivation: constraint
name: DkCoreCprIdentifier
type: Identifier
elements:
  use:
    pattern: {type: Code, value: official}
    index: 0
  system:
    binding: {strength: required, valueSet: 'http://hl7.dk/fhir/core/ValueSet/dk-core-cpr-identifier-system'}
    index: 1
  value:
    maxLength: 10
    constraint:
      cpr: {human: Requirement of danish civil registration numbers, source: 'https://cpr.dk/cpr-systemet/opbygning-af-cpr-nummeret/#:~:text=5%20%2D%206%20position%20angiver%20personens,i%20personnummeret%20angiver%20personens%20k%C3%B8n.', severity: error, expression: 'value.matches(''^(?:(?:31(?:0[13578]|1[02])|(?:30|29)(?:0[13-9]|1[0-2])|(?:0[1-9]|1[0-9]|2[0-8])(?:0[1-9]|1[0-2]))[0-9]{2}[0-9]|290200[4-9]|2902(?:(?!00)[02468][048]|[13579][26])[0-3])[0-9]{3}$'')', requirements: Requirement of danish civil registration numbers}
    mustSupport: false
    index: 2
package_version: 1.1.0
class: complex-type
kind: complex-type
url: http://hl7.dk/fhir/core/StructureDefinition/dk-core-cpr-identifier
base: http://hl7.org/fhir/StructureDefinition/Identifier
version: 1.1.0
required: [value, system]