This code system http://hl7.org/fhir/claim-use defines the following codes:

CodeDisplayDefinition
completeCompleteThe treatment is complete and this represents a Claim for the services.
proposedProposedThe treatment is proposed and this represents a Pre-authorization for the services.
exploratoryExploratoryThe treatment is proposed and this represents a Pre-determination for the services.
otherOtherA locally defined or otherwise resolved status.