This code system http://hl7.org/fhir/device-operation-mode defines the following codes:

Code Display Definition
normal Normal The device operates in a mode that supports the fulfillment of its clinical functions.
demo Demo The device operates in a mode that is intended for demonstration purposes only. Arbitrary values are generated.
service Service The device operates in a mode that is intended for correcting an functional problem of the device only. Arbitrary values may be generated.
maintenance Maintenance The device operates in a mode that is intended for preventative and/or scheduled maintenance purposes only.
test Test The device operates in a test mode that is not intended to be used for production/operational purposes.
<status value="active"/> <experimental value="false"/> <date value="2022-03-28T10:01:24+11:00"/> <publisher value="HL7 (FHIR Project)"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> <telecom> <system value="email"/> <value value="fhir@lists.hl7.org"/> </telecom> </contact> <description value="The operation mode of the device."/> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> <code value="001"/> <display value="World"/> </coding> </jurisdiction> <caseSensitive value="true"/> <valueSet value="http://hl7.org/fhir/ValueSet/device-operation-mode"/> <content value="complete"/> <concept> <code value="normal"/> <display value="Normal"/> <definition value="The device operates in a mode that supports the fulfillment of its clinical functions."/> </concept> <concept> <code value="demo"/> <display value="Demo"/> <definition value="The device operates in a mode that is intended for demonstration purposes only. Arbitrary values are generated."/> </concept> <concept> <code value="service"/> <display value="Service"/> <definition value="The device operates in a mode that is intended for correcting an functional problem of the device only. Arbitrary values may be generated."/> </concept> <concept> <code value="maintenance"/> <display value="Maintenance"/> <definition value="The device operates in a mode that is intended for preventative and/or scheduled maintenance purposes only."/> </concept> <concept> <code value="test"/> <display value="Test"/> <definition value="The device operates in a test mode that is not intended to be used for production/operational purposes."/> </concept> </CodeSystem>