ICD 10 CM Codes

R50.9 Fever, unspecified
Billable CodeR50.9 is a billable ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Alternate Description
Fever NOS
Fever of unknown origin [FUO]
Fever with chills
Fever with rigors
Hyperpyrexia NOS
Persistent fever
Pyrexia NOS
ICD-10-CM Index Entry
ICD-10-CM Index entries containing back-references to ICD-10-CM '.R50.9.'
Chill (s); with fever
Elevated, elevation; body temperature (of unknown origin)
Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)
Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor); ephemeral (of unknown origin)
Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor); intermittent (bilious); of unknown origin
Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor); persistent (of unknown origin)
Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor); unknown origin
FUO (fever of unknown origin)
High; temperature (of unknown origin)
Hyperpyrexia
Hyperpyrexia; unknown origin
Inanition; fever
PUO (pyrexia of unknown origin)
Pyrexia (of unknown origin)
Pyrexia (of unknown origin); persistent
Rigors; with fever
Temperature; body, high (of unknown origin)