Fever of other and unknown origin - R50

 Type 1 Excludes

• chills without fever (R68.83)
• febrile convulsions (R56.0-)
• fever of unknown origin during labor (O75.2)
• fever of unknown origin in newborn (P81.9)
• hypothermia due to illness (R68.0)
• malignant hyperthermia due to anesthesia (T88.3)
• puerperal pyrexia NOS (O86.4)

 Codes

• R50.2 - Drug induced fever
• R50.8 - Other specified fever
• R50.81 - Fever presenting with conditions classified elsewhere
• R50.82 - Postprocedural fever
• R50.83 - Postvaccination fever
• R50.84 - Febrile nonhemolytic transfusion reaction
• R50.9 - Fever, unspecified