> ## 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).