This code system http://hl7.org/fhir/v2/0868 defines the following codes:

CodeDisplayComments
CCorrectedThe telecommunication address has been replaced with a corrected version.
EAdded in errorThe telecommunication address was incorrect and should never have been associated with the individual.
MMovedThe individual associated with the telecommunication address has moved and is no longer reachable at the address.
NNo longer in serviceThe telecommunication address is no longer connected or available
ROn requestThe associated individual requested that the telecommunication address be removed from their record (though it may still be correct).