> ## 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.

# DeviceMetric

> Describes a measurement, calculation or setting capability of a medical device.

## Properties

| Name | Required | Type | Description |
| - | - | - | - |
| identifier | No | [Identifier](/medical-api/fhir/data-types/identifier)\[] | Instance identifier |
| type | Yes | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Identity of metric, for example Heart Rate or PEEP Setting |
| unit | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Unit of Measure for the Metric |
| source | No | Reference\<[Device](/medical-api/fhir/resources/device)> | Describes the link to the source Device |
| parent | No | Reference\<[Device](/medical-api/fhir/resources/device)> | Describes the link to the parent Device |
| operationalStatus | No | code | on / off / standby / entered-in-error |
| color | No | code | black / red / green / yellow / blue / magenta / cyan / white |
| category | Yes | code | measurement / setting / calculation / unspecified |
| measurementPeriod | No | [Timing](/medical-api/fhir/data-types/timing) | Describes the measurement repetition time |
| calibration | No | DeviceMetricCalibration | Describes the calibrations that have been performed or that are required to be performed |
| - 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 | No | code | unspecified / offset / gain / two-point |
| - state | No | code | not-calibrated / calibration-required / calibrated / unspecified |
| - time | No | instant | Describes the time last calibration has been performed |

## Search Parameters

| Name | Type | Description | Expression |
| - | - | - | - |
| category | token | The category of the metric | DeviceMetric.category |
| identifier | token | The identifier of the metric | DeviceMetric.identifier |
| parent | reference | The parent DeviceMetric resource | DeviceMetric.parent |
| source | reference | The device resource | DeviceMetric.source |
| type | token | The component type | DeviceMetric.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 [DeviceMetric](https://www.hl7.org/fhir/StructureDefinition/DeviceMetric).


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