R50: Fever of other and unknown origin
R50.9: Fever, unspecified
Normal body temperature ranges between 36 and 37 degrees Celsius. A body temperature over 38 degrees Celsius means you have a fever. Fever can have a number of causes. You can have a fever, for example, if you are infected with pathogens. Various conditions can also cause fever. You may also have chills and feel unwell.
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.