672 Pyrexia of unknown origin during the puerperium 
672.00 Puerperal pyrexia of unknown origin unspecified as to episode of care convert 672.00 to ICD-10-CM 672.02 Puerperal pyrexia of unknown origin delivered with postpartum complication convert 672.02 to ICD-10-CM
672.04 Puerperal pyrexia of unknown origin postpartum convert 672.04 to ICD-10-CM