> ## Documentation Index > Fetch the complete documentation index at: https://docs.metriport.com/llms.txt > Use this file to discover all available pages before exploring further. # DeviceDefinition > The characteristics, operational status and capabilities of a medical-related component of a medical device. ## Properties | Name | Required | Type | Description | | ----------------------- | -------- | ---------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | identifier | No | [Identifier](/medical-api/fhir/data-types/identifier)\[] | Instance identifier | | udiDeviceIdentifier | No | DeviceDefinitionUdiDeviceIdentifier | Unique Device Identifier (UDI) Barcode string | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - deviceIdentifier | Yes | string | The identifier that is to be associated with every Device that references this DeviceDefintiion for the issuer and jurisdication porvided in the DeviceDefinition.udiDeviceIdentifier | | - issuer | Yes | uri | The organization that assigns the identifier algorithm | | - jurisdiction | Yes | uri | The jurisdiction to which the deviceIdentifier applies | | manufacturer\[x] | No | string, Reference\<[Organization](/medical-api/fhir/resources/organization)> | Name of device manufacturer | | deviceName | No | DeviceDefinitionDeviceName | A name given to the device to identify it | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - name | Yes | string | The name of the device | | - type | Yes | code | udi-label-name / user-friendly-name / patient-reported-name / manufacturer-name / model-name / other | | modelNumber | No | string | The model number for the device | | type | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | What kind of device or device system this is | | specialization | No | DeviceDefinitionSpecialization | The capabilities supported on a device, the standards to which the device conforms for a particular purpose, and used for the communication | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - systemType | Yes | string | The standard that is used to operate and communicate | | - version | No | string | The version of the standard that is used to operate and communicate | | version | No | string\[] | Available versions | | safety | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Safety characteristics of the device | | shelfLifeStorage | No | [ProductShelfLife](/medical-api/fhir/data-types/productshelflife)\[] | Shelf Life and storage information | | physicalCharacteristics | No | [ProdCharacteristic](/medical-api/fhir/data-types/prodcharacteristic) | Dimensions, color etc. | | languageCode | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Language code for the human-readable text strings produced by the device (all supported) | | capability | No | DeviceDefinitionCapability | Device capabilities | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - type | Yes | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Type of capability | | - description | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Description of capability | | property | No | DeviceDefinitionProperty | The actual configuration settings of a device as it actually operates, e.g., regulation status, time properties | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - type | Yes | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Code that specifies the property DeviceDefinitionPropetyCode (Extensible) | | - valueQuantity | No | [Quantity](/medical-api/fhir/data-types/quantity)\[] | Property value as a quantity | | - valueCode | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Property value as a code, e.g., NTP4 (synced to NTP) | | owner | No | Reference\<[Organization](/medical-api/fhir/resources/organization)> | Organization responsible for device | | contact | No | [ContactPoint](/medical-api/fhir/data-types/contactpoint)\[] | Details for human/organization for support | | url | No | uri | Network address to contact device | | onlineInformation | No | uri | Access to on-line information | | note | No | [Annotation](/medical-api/fhir/data-types/annotation)\[] | Device notes and comments | | quantity | No | [Quantity](/medical-api/fhir/data-types/quantity) | The quantity of the device present in the packaging (e.g. the number of devices present in a pack, or the number of devices in the same package of the medicinal product) | | parentDevice | No | Reference\<[DeviceDefinition](/medical-api/fhir/resources/devicedefinition)> | The parent device it can be part of | | material | No | DeviceDefinitionMaterial | A substance used to create the material(s) of which the device is made | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - substance | Yes | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | The substance | | - alternate | No | boolean | Indicates an alternative material of the device | | - allergenicIndicator | No | boolean | Whether the substance is a known or suspected allergen | | classification | No | DeviceDefinitionClassification | What kind of device or device system this is | | - id | No | string | Unique id for inter-element referencing | | - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized | | - type | Yes | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | A classification or risk class of the device model | | - justification | No | [RelatedArtifact](/medical-api/fhir/data-types/relatedartifact)\[] | Further information qualifying this classification of the device model | | bodySite | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Target body site | ## Search Parameters | Name | Type | Description | Expression | | -------------- | --------- | ------------------------------------ | ------------------------------------ | | identifier | token | The identifier of the component | DeviceDefinition.identifier | | parent | reference | The parent DeviceDefinition resource | DeviceDefinition.parentDevice | | type | token | The device component type | DeviceDefinition.type | | classification | token | The device component classification | DeviceDefinition.classification.type | ## Inherited Properties | Name | Required | Type | Description | | ----------------- | -------- | ------------------------------------------------------ | ------------------------------------------------------ | | id | No | string | Logical id of this artifact | | meta | No | [Meta](/medical-api/fhir/data-types/meta) | Metadata about the resource | | implicitRules | No | uri | A set of rules under which this content was created | | language | No | code | Language of the resource content | | text | No | [Narrative](/medical-api/fhir/data-types/narrative) | Text summary of the resource, for human interpretation | | contained | No | Resource\[] | Contained, inline Resources | | extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations | | modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored | To view the FHIR specification for this resource, see [DeviceDefinition](https://www.hl7.org/fhir/StructureDefinition/DeviceDefinition).