Non-Billable / Non-Specific Code
ICD-10-CM R50 is the diagnosis code for Fever of other and unknown origin. This code falls under the section "General symptoms and signs" within Chapter 18 — Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as R50. They are mutually exclusive:
Understanding where R50 sits in the ICD-10-CM classification helps ensure proper coding:
No, R50 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
R50 is the ICD-10-CM diagnosis code for "Fever of other and unknown origin". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
R50 is located in Section R50-R69 — "General symptoms and signs" within Chapter 18 of the ICD-10-CM Tabular List.
R50 has 3 sub-code(s) that provide more specific detail: R50.2, R50.8, R50.9.
Use R50 when the patients documented diagnosis matches "Fever of other and unknown origin" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Fever of other and unknown origin is R50.
No, R50 is non-billable. Use a more specific sub-code for primary diagnosis billing.
R50 is in Chapter 18 of the ICD-10-CM Tabular List.
Type 1 Excludes for R50 include: chills without fever (R68.83); febrile convulsions (R56.0-); fever of unknown origin during labor (O75.2) and more.
Yes, R50 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.