R50.8Non-Billable (Header)Other specified feverChild CodesR50.81Fever presenting with conditions classified elsewhereR50.82Postprocedural feverR50.83Postvaccination feverR50.84Febrile nonhemolytic transfusion reactionCode Hierarchy└R50Fever of other and unknown origin└R50.8Other specified fever└R50.8Other specified fever