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2025 ICD-10-CM code R53.83

Other fatigue.

Do not use this code when a more specific code for the fatigue exists (e.g., fatigue due to a specific medical condition). Ensure the documentation supports the diagnosis of "other fatigue." This code has a type 2 Excludes1 note with F32.-, meaning it should not be reported together with F32 if both codes apply to the same episode.

No modifiers are applicable to this code.

Medical necessity is established when the fatigue significantly impacts the patient's daily life and functioning, and no other diagnosable condition is found to explain the fatigue. Documentation should clearly support the severity and impact of the fatigue to justify the use of the code.

The physician is responsible to document all symptoms and the duration to determine the code that reflects the patient's condition.

In simple words: This code is used when someone feels overly tired for no obvious medical reason.

This code captures instances of fatigue that are not due to normal exertion or other clearly defined medical conditions. It is commonly used when patients report excessive tiredness that impacts their daily activities but does not fall under more specific fatigue-related diagnoses.

Example 1: A patient presents with persistent fatigue for several months, impacting their daily life. After extensive testing, no underlying medical cause is found. The physician documents "other fatigue.", A patient undergoing chemotherapy experiences extreme fatigue beyond what is typically expected. The oncologist documents this using R53.83., A patient reports persistent lethargy and lack of energy, interfering with work and social activities. No specific medical condition is identified after a thorough evaluation, so the physician codes the fatigue as R53.83.

Document the patient's described symptoms of fatigue, including duration, severity, and impact on daily activities. Ensure no other medical condition explains the fatigue before using this code. Note any relevant test results and rule out other potential causes.

** This code is a billable/specific ICD-10-CM code and should be used to indicate a diagnosis for reimbursement purposes. ICD-9 code 780.79 is the equivalent code.

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