Pyrexia (of unknown origin)

"Pyrexia (of unknown origin)" References in the ICD-10-CM Index to Diseases and Injuries

References in the ICD-10-CM Index to Diseases and Injuries applicable to the clinical term "pyrexia (of unknown origin)"

  • Pyrexia (of unknown origin) - R50.9 Fever, unspecified
    • atmospheric - T67.01 Heatstroke and sunstroke
    • during labor NEC - O75.2 Pyrexia during labor, not elsewhere classified
    • heat - T67.01 Heatstroke and sunstroke
    • newborn - P81.9 Disturbance of temperature regulation of newborn, unspecified
      • environmentally-induced - P81.0 Environmental hyperthermia of newborn
    • persistent - R50.9 Fever, unspecified
    • puerperal - O86.4 Pyrexia of unknown origin following delivery

Applicable Clinical Terms Definitions

Infant, Newborn: An infant during the first 28 days after birth.