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R50

Non-Billable (Header)

Fever of other and unknown origin

Excludes 1 — Do NOT code together

  • 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)

Child Codes

R50.2Drug induced fever
R50.8Other specified fever
R50.9Fever, unspecified

Code Hierarchy

└R50Fever of other and unknown origin
└R50Fever of other and unknown origin

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