ICD-10-CM R50.9: Fever, unspecified

ICD-10-CM Diagnosis Code (2025)

Official Description for R50.9

Fever, unspecified

Coding Notes & Guidelines for R50.9

Inclusion Terms
  • Fever NOS
  • Fever of unknown origin [FUO]
  • Fever with chills
  • Fever with rigors
  • Hyperpyrexia NOS
  • Persistent fever
  • Pyrexia NOS

Parent Code (Less Specific):

R50 - Fever of other and unknown origin

About ICD-10-CM Code R50.9 (Fever)

ICD-10-CM code R50.9 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM R50.9 became effective on October 1, 2024.

This page provides detailed information about R50.9 - Fever, unspecified. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Fever related to unspecified.