R50.9
✓ Billable
Fever, unspecified
ICD-10-CM · FY2026 · Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Code
R50.9
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code R50.9?
ICD-10-CM code R50.9 represents Fever, unspecified. It is a billable diagnosis code in the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter, effective October 1, 2025 – September 30, 2026.
Is R50.9 billable?
Yes. R50.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is R50.9 in?
R50.9 belongs to the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter (R00–R99) of ICD-10-CM.
Related codes in the R50 category
R50
Fever of other and unknown origin
Non-billable
R50.2
Drug induced fever
Billable
R50.8
Other specified fever
Non-billable
R50.81
Fever presenting with conditions classified elsewhere
Billable
R50.82
Postprocedural fever
Billable
R50.83
Postvaccination fever
Billable
R50.84
Febrile nonhemolytic transfusion reaction
Billable
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