ICD-10-CM Code R50

Fever of other and unknown origin

Version 2020 Non-Billable Code No Valid Principal Dx

Not Valid for Submission

R50 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of fever of other and unknown origin. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:R50
Short Description:Fever of other and unknown origin
Long Description:Fever of other and unknown origin

Consider the following ICD-10 codes with a higher level of specificity:

  • R50.2 - Drug induced fever
  • R50.8 - Other specified fever
  • R50.81 - Fever presenting with conditions classified elsewhere
  • R50.82 - Postprocedural fever
  • R50.83 - Postvaccination fever
  • R50.84 - Febrile nonhemolytic transfusion reaction
  • R50.9 - Fever, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code R50:

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • 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

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • General symptoms and signs (R50-R69)
      • Fever of other and unknown origin (R50)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Fever

A fever is a body temperature that is higher than normal. A normal temperature can vary from person to person, but it is usually around 98.6 F. A fever is not a disease. It is usually a sign that your body is trying to fight an illness or infection.

Infections cause most fevers. You get a fever because your body is trying to kill the virus or bacteria that caused the infection. Most of those bacteria and viruses do well when your body is at your normal temperature. But if you have a fever, it is harder for them to survive. Fever also activates your body's immune system.

Other causes of fevers include

  • Medicines, including some antibiotics, blood pressure medicines, and anti-seizure medicines
  • Heat illness
  • Cancers
  • Autoimmune diseases
  • Some childhood immunizations

Treatment depends on the cause of your fever. If the fever is very high, your health care provider may recommend taking an over-the-counter medicine such as acetaminophen or ibuprofen. Adults can also take aspirin, but children with fevers should not take aspirin. It is also important to drink enough liquids, to prevent dehydration.


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