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

CodeDisplayDefinition
model ModelThe corrective action was intended for all units of the same model.
lot-numbers Lot NumbersThe corrective action was intended for a specific batch of units identified by a lot number.
serial-numbers Serial NumbersThe corrective action was intended for an individual unit (or a set of units) individually identified by serial number.
<status value="active"/><experimental value="false"/><date value="2021-01-05T10:01:24+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 type of relation between devices."/><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-correctiveactionscope"/><content value="complete"/><concept><code value="model"/><display value="Model"/><definition value="The corrective action was intended for all units of the same model."/></concept><concept><code value="lot-numbers"/><display value="Lot Numbers"/><definition value="The corrective action was intended for a specific batch of units identified by a lot number."/></concept><concept><code value="serial-numbers"/><display value="Serial Numbers"/><definition value="The corrective action was intended for an individual unit (or a set of units) individually identified by serial number."/></concept></CodeSystem>