Namingsystem.profile.json

StructureDefinition for namingsystem

{
  "resourceType": "StructureDefinition",
  "id": "NamingSystem",
  "meta": {
    "lastUpdated": "2015-03-27T00:13:00.999+11:00"
  },
  "text": {
    "status": "generated",
    "div": "<div>!-- Snipped for Brevity --></div>"
  },
  "url": "http://hl7.org/fhir/StructureDefinition/NamingSystem",
  "name": "NamingSystem",
  "publisher": "HL7 FHIR Project (FHIR Management Group)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://hl7.org/fhir"
        }
      ]
    },
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/fhirmg/index.cfm"
        }
      ]
    }
  ],
  "description": "Base StructureDefinition for NamingSystem Resource",
  "status": "draft",
  "date": "2015-03-27T00:13:00+11:00",
  "mapping": [
    {
      "identity": "v2",
      "uri": "http://hl7.org/v2",
      "name": "HL7 v2"
    },
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM"
    }
  ],
  "type": "resource",
  "abstract": true,
  "snapshot": {
    "element": [
      {
        "path": "NamingSystem",
        "short": "System of unique identification",
        "definition": "A curated namespace that issues unique symbols within that namespace for the identification of concepts, people, devices, etc.  Represents a \"System\" used within the Identifier and Coding data types.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "NamingSystem"
          }
        ],
        "constraint": [
          {
            "key": "nsd-2",
            "severity": "error",
            "human": "Can't have more than one preferred identifier for a type",
            "xpath": "not(exists(for $type in distinct-values(f:uniqueId/f:type) return if (count(f:uniqueId[f:type/@value=$type and f:primary/@value='true'])>1) then $type else ()))"
          },
          {
            "key": "nsd-3",
            "severity": "error",
            "human": "Can only have replacedBy if namingsystem is retired",
            "xpath": "not(f:replacedBy) or f:status/@value='retired'"
          },
          {
            "key": "nsd-1",
            "severity": "error",
            "human": "Root systems cannot have uuid or sid identifiers",
            "xpath": "not(f:type/@value='root' and f:uniqueId/f:type=('uuid', 'ruid'))"
          }
        ],
        "mapping": [
          {
            "identity": "v2",
            "map": "N/A"
          },
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "path": "NamingSystem.id",
        "short": "Logical id of this artefact",
        "definition": "The logical id of the resource, as used in the url for the resoure. Once assigned, this value never changes.",
        "comments": "The only time that a resource does not have an id is when it is being submitted to the server using a create operation. Bundles always have an id, though it is usually a generated UUID.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "id"
          }
        ]
      },
      {
        "path": "NamingSystem.meta",
        "short": "Metadata about the resource",
        "definition": "The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content may not always be associated with version changes to the resource.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Meta"
          }
        ]
      },
      {
        "path": "NamingSystem.implicitRules",
        "short": "A set of rules under which this content was created",
        "definition": "A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content.",
        "comments": "Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element as much as possible.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "uri"
          }
        ],
        "isModifier": true
      },
      {
        "path": "NamingSystem.language",
        "short": "Language of the resource content",
        "definition": "The base language in which the resource is written.",
        "comments": "Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies  to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource\n\nNot all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "name": "Language",
          "strength": "required",
          "description": "A human language",
          "valueSetUri": "http://tools.ietf.org/html/bcp47"
        }
      },
      {
        "path": "NamingSystem.text",
        "short": "Text summary of the resource, for human interpretation",
        "definition": "A human-readable narrative that contains a summary of the resource, and may be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it \"clinically safe\" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.",
        "comments": "Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative.",
        "alias": [
          "narrative",
          "html",
          "xhtml",
          "display"
        ],
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Narrative"
          }
        ],
        "condition": [
          "dom-1"
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "Act.text?"
          }
        ]
      },
      {
        "path": "NamingSystem.contained",
        "short": "Contained, inline Resources",
        "definition": "These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.",
        "comments": "This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again.",
        "alias": [
          "inline resources",
          "anonymous resources",
          "contained resources"
        ],
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Resource"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "path": "NamingSystem.extension",
        "short": "Additional Content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the resource. 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.",
        "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.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "path": "NamingSystem.modifierExtension",
        "short": "Extensions that cannot be ignored",
        "definition": "May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions.",
        "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.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "path": "NamingSystem.type",
        "short": "codesystem | identifier | root",
        "definition": "Indicates the purpose for the namingsystem - what kinds of things does it make unique?",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "name": "NamingSystemType",
          "strength": "required",
          "description": "Identifies the purpose of the namingsystem",
          "valueSetReference": {
            "reference": "http://hl7.org/fhir/vs/namingsystem-type"
          }
        }
      },
      {
        "path": "NamingSystem.name",
        "short": "Human-readable label",
        "definition": "The descriptive name of this particular identifier type or code system.",
        "comments": "The\"symbolic name\" for an OID would be captured as an extension.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.date",
        "short": "Publication Date(/time)",
        "definition": "The date  (and optionally time) when the system was registered or published.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "dateTime"
          }
        ],
        "isSummary": true
      },
      {
        "path": "NamingSystem.status",
        "short": "draft | active | retired",
        "definition": "Indicates whether the namingsystem is \"ready for use\" or not.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "isModifier": true,
        "binding": {
          "name": "ConformanceResourceStatus",
          "strength": "required",
          "description": "The lifecycle status of a Value Set or Concept Map",
          "valueSetReference": {
            "reference": "http://hl7.org/fhir/vs/conformance-resource-status"
          }
        }
      },
      {
        "path": "NamingSystem.country",
        "short": "ISO 3-char country code",
        "definition": "If present, indicates that the identifier or code system is principally intended for use or applies to entities within the specified country.  For example, the country associated with a national code system.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "name": "Country",
          "strength": "required",
          "description": "Codes for identifying countries",
          "valueSetUri": "http://www.iso.org/iso/country_codes"
        }
      },
      {
        "path": "NamingSystem.category",
        "short": "e.g. driver,  provider,  patient, bank etc",
        "definition": "Categorizes a namingsystem for easier search by grouping related namingsystems.",
        "comments": "This will most commonly be used for identifier namespaces, but categories could potentially be useful for code systems and authorities as well.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "name": "NamingSystemCategory",
          "strength": "required",
          "description": "Identifies the general purpose of the namingsystem identifiers provided.  E.g. Driver, Provider, Patient, Bank, etc."
        }
      },
      {
        "path": "NamingSystem.responsible",
        "short": "Who maintains system namespace?",
        "definition": "The name of the organization that is responsible for issuing identifiers or codes for this namespace and ensuring their non-collision.",
        "comments": "This is the primary organization.  Responsibility for some aspects of a namespace may be delegated.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.description",
        "short": "What does namingsystem identify?",
        "definition": "Details about what the namespace identifies including scope, granularity, version labeling, etc.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.usage",
        "short": "How/where is it used",
        "definition": "Provides guidance on the use of the namespace, including the handling of formatting characters, use of upper vs. lower case, etc.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId",
        "short": "Unique identifiers used for system",
        "definition": "Indicates how the system may be identified when referenced in electronic exchange.",
        "comments": "Multiple identifiers may exist, either due to duplicate registration, regional rules, needs of different communication technologies, etc.",
        "min": 1,
        "max": "*"
      },
      {
        "path": "NamingSystem.uniqueId.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "id"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId.extension",
        "short": "Additional Content defined by implementations",
        "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.",
        "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.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId.modifierExtension",
        "short": "Extensions that cannot be ignored",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions.",
        "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.",
        "alias": [
          "extensions",
          "user content",
          "modifiers"
        ],
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId.type",
        "short": "oid | uuid | uri | other",
        "definition": "Identifies the unique identifier scheme used for this particular identifier.",
        "comments": "Different identifier types may be used in different types of communications (OIDs for v3, URIs for FHIR, etc.).  Other includes RUIDs from v3, standard v2 code name strings, etc.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "name": "NamingSystemIdentifierType",
          "strength": "required",
          "description": "Identifies the style of unique identifier used to identify a namepace",
          "valueSetReference": {
            "reference": "http://hl7.org/fhir/vs/namingsystem-identifier-type"
          }
        }
      },
      {
        "path": "NamingSystem.uniqueId.value",
        "short": "The unique identifier",
        "definition": "The string that should be sent over the wire to identify the code system or identifier system.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId.preferred",
        "short": "Is this the id that should be used for this type",
        "definition": "Indicates whether this identifier is the \"preferred\" identifier of this type.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId.period",
        "short": "When is identifier valid?",
        "definition": "Identifies the period of time over which this identifier is considered appropriate to refer to the namingsystem.  Outside of this window, the identifier might be non-deterministic.",
        "comments": "Within a registry, a given identifier should only be \"active\" for a single namespace at a time.  (Ideally, an identifier should only ever be associated with a single namespace across all time).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Period"
          }
        ]
      },
      {
        "path": "NamingSystem.publisher",
        "short": "Name of the publisher (Organization or individual)",
        "definition": "The name of the individual or organization that published the naming system.",
        "comments": "Usually an organization, but may be an individual. This item SHOULD be populated unless the information is available from context.",
        "requirements": "Helps establish the \"authority/credibility\" of the naming system.  May also allow for contact.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ],
        "isSummary": true
      },
      {
        "path": "NamingSystem.contact",
        "short": "Contact details of the publisher",
        "definition": "Contacts to assist a user in finding and communicating with the publisher.",
        "comments": "May be a web site, an email address, a telephone number (tel:), etc.",
        "min": 0,
        "max": "*",
        "isSummary": true
      },
      {
        "path": "NamingSystem.contact.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "xml:id (or equivalent in JSON)",
        "definition": "unique id for the element within a resource (for internal references).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "id"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "path": "NamingSystem.contact.extension",
        "short": "Additional Content defined by implementations",
        "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.",
        "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.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "path": "NamingSystem.contact.modifierExtension",
        "short": "Extensions that cannot be ignored",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. 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. Applications processing a resource are required to check for modifier extensions.",
        "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.",
        "alias": [
          "extensions",
          "user content",
          "modifiers"
        ],
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "Extension"
          }
        ],
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "path": "NamingSystem.contact.name",
        "short": "Name of a individual to contact",
        "definition": "The name of an individual to contact regarding the naming system.",
        "comments": "If there is no named individual, the telecom is for the organization as a whole.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ],
        "isSummary": true
      },
      {
        "path": "NamingSystem.contact.telecom",
        "short": "Contact details for individual or publisher",
        "definition": "Contact details for individual (if a name was provided) or the publisher.",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "ContactPoint"
          }
        ],
        "isSummary": true
      },
      {
        "path": "NamingSystem.replacedBy",
        "short": "Use this instead",
        "definition": "For namingsystems that are retired, indicates the namingsystem that should be used in their place (if any).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Reference",
            "profile": "http://hl7.org/fhir/StructureDefinition/NamingSystem"
          }
        ],
        "condition": [
          "nsd-3"
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "path": "NamingSystem",
        "short": "System of unique identification",
        "definition": "A curated namespace that issues unique symbols within that namespace for the identification of concepts, people, devices, etc.  Represents a \"System\" used within the Identifier and Coding data types.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "DomainResource"
          }
        ],
        "constraint": [
          {
            "key": "nsd-2",
            "severity": "error",
            "human": "Can't have more than one preferred identifier for a type",
            "xpath": "not(exists(for $type in distinct-values(f:uniqueId/f:type) return if (count(f:uniqueId[f:type/@value=$type and f:primary/@value='true'])>1) then $type else ()))"
          },
          {
            "key": "nsd-3",
            "severity": "error",
            "human": "Can only have replacedBy if namingsystem is retired",
            "xpath": "not(f:replacedBy) or f:status/@value='retired'"
          },
          {
            "key": "nsd-1",
            "severity": "error",
            "human": "Root systems cannot have uuid or sid identifiers",
            "xpath": "not(f:type/@value='root' and f:uniqueId/f:type=('uuid', 'ruid'))"
          }
        ],
        "mapping": [
          {
            "identity": "v2",
            "map": "N/A"
          },
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "path": "NamingSystem.type",
        "short": "codesystem | identifier | root",
        "definition": "Indicates the purpose for the namingsystem - what kinds of things does it make unique?",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "name": "NamingSystemType",
          "strength": "required",
          "description": "Identifies the purpose of the namingsystem",
          "valueSetReference": {
            "reference": "http://hl7.org/fhir/vs/namingsystem-type"
          }
        }
      },
      {
        "path": "NamingSystem.name",
        "short": "Human-readable label",
        "definition": "The descriptive name of this particular identifier type or code system.",
        "comments": "The\"symbolic name\" for an OID would be captured as an extension.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.date",
        "short": "Publication Date(/time)",
        "definition": "The date  (and optionally time) when the system was registered or published.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "dateTime"
          }
        ],
        "isSummary": true
      },
      {
        "path": "NamingSystem.status",
        "short": "draft | active | retired",
        "definition": "Indicates whether the namingsystem is \"ready for use\" or not.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "isModifier": true,
        "binding": {
          "name": "ConformanceResourceStatus",
          "strength": "required",
          "description": "The lifecycle status of a Value Set or Concept Map",
          "valueSetReference": {
            "reference": "http://hl7.org/fhir/vs/conformance-resource-status"
          }
        }
      },
      {
        "path": "NamingSystem.country",
        "short": "ISO 3-char country code",
        "definition": "If present, indicates that the identifier or code system is principally intended for use or applies to entities within the specified country.  For example, the country associated with a national code system.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "name": "Country",
          "strength": "required",
          "description": "Codes for identifying countries",
          "valueSetUri": "http://www.iso.org/iso/country_codes"
        }
      },
      {
        "path": "NamingSystem.category",
        "short": "e.g. driver,  provider,  patient, bank etc",
        "definition": "Categorizes a namingsystem for easier search by grouping related namingsystems.",
        "comments": "This will most commonly be used for identifier namespaces, but categories could potentially be useful for code systems and authorities as well.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "name": "NamingSystemCategory",
          "strength": "required",
          "description": "Identifies the general purpose of the namingsystem identifiers provided.  E.g. Driver, Provider, Patient, Bank, etc."
        }
      },
      {
        "path": "NamingSystem.responsible",
        "short": "Who maintains system namespace?",
        "definition": "The name of the organization that is responsible for issuing identifiers or codes for this namespace and ensuring their non-collision.",
        "comments": "This is the primary organization.  Responsibility for some aspects of a namespace may be delegated.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.description",
        "short": "What does namingsystem identify?",
        "definition": "Details about what the namespace identifies including scope, granularity, version labeling, etc.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.usage",
        "short": "How/where is it used",
        "definition": "Provides guidance on the use of the namespace, including the handling of formatting characters, use of upper vs. lower case, etc.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId",
        "short": "Unique identifiers used for system",
        "definition": "Indicates how the system may be identified when referenced in electronic exchange.",
        "comments": "Multiple identifiers may exist, either due to duplicate registration, regional rules, needs of different communication technologies, etc.",
        "min": 1,
        "max": "*"
      },
      {
        "path": "NamingSystem.uniqueId.type",
        "short": "oid | uuid | uri | other",
        "definition": "Identifies the unique identifier scheme used for this particular identifier.",
        "comments": "Different identifier types may be used in different types of communications (OIDs for v3, URIs for FHIR, etc.).  Other includes RUIDs from v3, standard v2 code name strings, etc.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "code"
          }
        ],
        "binding": {
          "name": "NamingSystemIdentifierType",
          "strength": "required",
          "description": "Identifies the style of unique identifier used to identify a namepace",
          "valueSetReference": {
            "reference": "http://hl7.org/fhir/vs/namingsystem-identifier-type"
          }
        }
      },
      {
        "path": "NamingSystem.uniqueId.value",
        "short": "The unique identifier",
        "definition": "The string that should be sent over the wire to identify the code system or identifier system.",
        "min": 1,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId.preferred",
        "short": "Is this the id that should be used for this type",
        "definition": "Indicates whether this identifier is the \"preferred\" identifier of this type.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "path": "NamingSystem.uniqueId.period",
        "short": "When is identifier valid?",
        "definition": "Identifies the period of time over which this identifier is considered appropriate to refer to the namingsystem.  Outside of this window, the identifier might be non-deterministic.",
        "comments": "Within a registry, a given identifier should only be \"active\" for a single namespace at a time.  (Ideally, an identifier should only ever be associated with a single namespace across all time).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Period"
          }
        ]
      },
      {
        "path": "NamingSystem.publisher",
        "short": "Name of the publisher (Organization or individual)",
        "definition": "The name of the individual or organization that published the naming system.",
        "comments": "Usually an organization, but may be an individual. This item SHOULD be populated unless the information is available from context.",
        "requirements": "Helps establish the \"authority/credibility\" of the naming system.  May also allow for contact.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ],
        "isSummary": true
      },
      {
        "path": "NamingSystem.contact",
        "short": "Contact details of the publisher",
        "definition": "Contacts to assist a user in finding and communicating with the publisher.",
        "comments": "May be a web site, an email address, a telephone number (tel:), etc.",
        "min": 0,
        "max": "*",
        "isSummary": true
      },
      {
        "path": "NamingSystem.contact.name",
        "short": "Name of a individual to contact",
        "definition": "The name of an individual to contact regarding the naming system.",
        "comments": "If there is no named individual, the telecom is for the organization as a whole.",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "string"
          }
        ],
        "isSummary": true
      },
      {
        "path": "NamingSystem.contact.telecom",
        "short": "Contact details for individual or publisher",
        "definition": "Contact details for individual (if a name was provided) or the publisher.",
        "min": 0,
        "max": "*",
        "type": [
          {
            "code": "ContactPoint"
          }
        ],
        "isSummary": true
      },
      {
        "path": "NamingSystem.replacedBy",
        "short": "Use this instead",
        "definition": "For namingsystems that are retired, indicates the namingsystem that should be used in their place (if any).",
        "min": 0,
        "max": "1",
        "type": [
          {
            "code": "Reference",
            "profile": "http://hl7.org/fhir/StructureDefinition/NamingSystem"
          }
        ],
        "condition": [
          "nsd-3"
        ]
      }
    ]
  }
}