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R50.8

⚠ Non-billable (Header)

Other specified fever

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

inherited from R50

Rules from parent category R50: Fever of other and unknown origin

  • • 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)

Child Codes (4)

R50.81Fever presenting with conditions classified elsewhereR50.82Postprocedural feverR50.83Postvaccination feverR50.84Febrile nonhemolytic transfusion reaction

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Code Information

CodeR50.8
BillableNo — Header code
ParentR50
CategorySymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Excludes17 rule(s)
Excludes20 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)