ICD10Check
CheckerBrowseOpen

R50

⚠ Non-billable (Header)

Fever of other and unknown origin

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.

Check This Code

❌ Excludes1

direct

Cannot be coded with R50

  • • 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 (3)

R50.2Drug induced feverR50.8Other specified feverR50.9Fever, unspecified

🧪 Validate Combinations

Add R50 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeR50
BillableNo — Header code
CategorySymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Excludes17 rule(s)
Excludes20 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)