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  1. www.icd10data.com › ICD10CM › Codes2024 ICD-10-CM Diagnosis Code R50.9: Fever, unspecified

    Febrile illness (fever) Fever; Fever of unknown origin; Fever with chills; Pyrexia of unknown origin; Clinical Information. A disorder characterized by elevation of the body's temperature above the upper limit of normal. A fever is a body temperature that is higher than normal. It is not an illness. It is part of your body's defense against ...

    • R50

      ICD 10 code for Fever of other and unknown origin. Get free...

    • Fever

      Applicable To. Rickettsia 364D/R. philipii (Pacific Coast...

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  3. www.uptodate.com › contents › fever-of-unknownFever of unknown origin in adults: Evaluation and management

    Nov 28, 2023 · Clinicians commonly refer to a febrile illness without an initially obvious etiology as fever of unknown origin (FUO). However, most febrile illnesses either resolve before a diagnosis can be made or develop distinguishing characteristics that lead to a diagnosis.

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  5. www.aafp.org › pubs › afpFever of Unknown Origin in Adults | AAFP

    Fever of unknown origin is defined as a clinically documented temperature of 101°F or higher on several occasions, coupled with an unrevealing diagnostic workup.

  6. www.ncbi.nlm.nih.gov › books › NBK532265Fever of Unknown Origin - StatPearls - NCBI Bookshelf

    Aug 14, 2023 · Fever of unknown origin (FUO) was first described by Dr. Petersdorf and Dr. Beesom in 1961. FUO was defined as a temperature of 101 degrees Fahrenheit (38.3 degrees Centigrade) or higher with a minimum duration of three weeks without an established diagnosis after an intensive one-week investigation in the hospital.

    • Ilona Brown, Nancy A. Finnigan
    • 2023/08/14
    • 2021

  7. www.merckmanuals.com › fever-of-unknown-origin-fuoFever of Unknown Origin (FUO) - Fever of Unknown Origin (FUO ...

    Jul 9, 2024 · Fever of unknown origin (FUO) is body temperature ≥ 38.3 ° C (≥ 101° F) rectally that does not result from transient and self-limited illness, rapidly fatal illness, or disorders with clear-cut localizing symptoms or signs or with abnormalities on common tests such as chest radiograph, urinalysis, or blood cultures.

    • Larry M. Bush

  8. www.icd10data.com › ICD10CM › Codes2024 ICD-10-CM Codes R50*: Fever of other and unknown origin

    Fever of other and unknown origin. R50-. Type 1 Excludes. note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as . A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of ...

  9. www.ncbi.nlm.nih.gov › pmc › articlesUpdate on Fever of Unknown Origin in Children: Focus on ...

    Dec 24, 2023 · Abstract. Fever of unknown origin (FUO) can be caused by four etiological categories of diseases. The most common cause of FUO in children is represented by infections, followed by inflammatory conditions and neoplastic causes; a decreasing quote remains still without diagnosis.

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