ICD-10 CM Code R50.9
R50.9
Fever, unspecified
Inclusion Term
- Fever NOS
- Fever of unknown origin [FUO]
- Fever with chills
- Fever with rigors
- Hyperpyrexia NOS
- Persistent fever
- Pyrexia NOS
Excludes Type 1
- 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)
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