description: EPR-SPID Identifier (https://www.fedlex.admin.ch/eli/cc/2017/205/de)
package_name: ch.fhir.ig.ch-core
derivation: constraint
name: EPRSPIDIdentifier
type: Identifier
elements:
  system:
    pattern: {type: Uri, value: 'urn:oid:2.16.756.5.30.1.127.3.10.3'}
    index: 0
  value:
    constraint:
      epr-spid-length: {human: EPR-SPID must be exactly 18 characters long, severity: error, expression: 'value.matches(''^[0-9]{18}$'')'}
      epr-spid-startswith76133761: {human: EPR-SPID must start with 76133761, severity: error, expression: value.startsWith('76133761')}
      epr-spid-modulus-10: {human: 'EPR-SPID must pass the modulus 10 check - https://www.gs1.org/services/how-calculate-check-digit-manually', severity: error, expression: '(((10-((68+(value.substring(8,1).toInteger()*3)+(value.substring(9,1).toInteger()*1)+(value.substring(10,1).toInteger()*3)+(value.substring(11,1).toInteger()*1)+(value.substring(12,1).toInteger()*3)+(value.substring(13,1).toInteger()*1)+(value.substring(14,1).toInteger()*3)+(value.substring(15,1).toInteger()*1)+(value.substring(16,1).toInteger()*3))mod(10)))mod(10))=value.substring(17,1).toInteger())'}
    index: 1
package_version: 3.0.0
class: complex-type
kind: complex-type
url: http://fhir.ch/ig/ch-core/StructureDefinition/ch-core-epr-spid-identifier
base: http://hl7.org/fhir/StructureDefinition/Identifier
version: 3.0.0
required: [value, system]