Condition
FUO medical abbreviation
FUO means "fever of unknown origin".
Each meaning matched at least two public references (3 in all for FUO), checked October 23, 2026. The table lists them.
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What FUO means
| Meaning | Latin origin | Where used | Checked against |
|---|---|---|---|
| fever of unknown origin | None | Charting, Problem lists |
Example
Sample admission reason: "FUO."
A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.
Related abbreviations
Elsewhere on Rivvi
Questions
What does FUO mean in medical terms?
FUO means "fever of unknown origin".
Where is FUO used?
FUO shows up in charting and problem lists. Its category here is condition.
Is FUO on the Joint Commission Do Not Use list?
No. FUO is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.