R50.9 - Fever, unspecified


R50.9 - Fever, unspecified


  • Fever NOS
  • Fever of unknown origin [FUO]
  • Fever with chills
  • Fever with rigors
  • Hyperpyrexia NOS
  • Persistent fever
  • Pyrexia NOS

Code Tree

R00-R99 - Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
  • R50-R69 - General symptoms and signs
    • R50 - Fever of other and unknown origin
      • R50.2 - Drug induced fever
      • R50.8 - Other specified fever
      • R50.9 - Fever, unspecified

Map to ⑨

R50.9 converts approximately to ICD-9-CM:
R50.9 - Fever, unspecified is a sample topic from the ICD-10-CM.

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