October 9, 2025
ICD-10 Code R53.83 is a 2025 billable specific code used to identify cases of fatigue, malaise, or exhaustion not linked to a specific underlying medical condition. This code is recognized in the American ICD-10-CM version under the chapter βSymptoms, signs, and abnormal clinical and laboratory findings not elsewhere classified.β
The 2025 ICD-10-CM edition of R53.83, effective on October 1, 2024, remains valid for reporting and diagnosis for reimbursement purposes in the United States. International versions of ICD-10 may differ slightly, but the intent remains consistent – to classify and report fatigue-related conditions that impact a patientβs ordinary daily activities without an identifiable cause.
ICD-10 Code R53.83 is a 2025 billable specific diagnosis code used for documenting unexplained fatigue not caused by other medical conditions.
R53.83 is categorized under the broader section βExhaustion and abnormal clinical and laboratory findings not elsewhere classified.β It is used when a patient experiences unexplained or persistent fatigue that interferes with everyday functioning but does not meet the clinical definition of chronic fatigue syndrome (CFS) or other specified disorders.
This diagnosis code helps clinicians capture nonspecific fatigue symptoms that persist despite rest or lifestyle adjustments, allowing for proper medical billing and coding accuracy.
R53.83 is billable and specific, meaning it can be submitted directly to payers for claim processing without requiring additional sub-classifications or unspecified codes.
Patients diagnosed with ICD-10-CM R53.83 may present with one or more of the following:
This code is particularly relevant for documenting fatigue due to medical treatments such as chemotherapy or radiation therapy, or when other potential causes (e.g., endocrine, neurological, or psychiatric conditions) have been ruled out.
R53.83 may be used in documentation for terms such as:
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Healthcare providers should report R53.83 when fatigue cannot be linked to a specific medical condition or when chronic fatigue syndrome (CFS) and related codes do not apply.
Use this code to support diagnosis for reimbursement purposes when:
Proper documentation ensures accurate claim submission, reduces denial risks, and improves reimbursement timelines under the 2025 ICD-10-CM guidelines.
Guidelines for Accurate Coding
To use R53.83 accurately, providers must:
ICD-10 codes, created by the World Health Organization (WHO), are vital for standardizing medical diagnoses worldwide. These codes help healthcare providers:
The shift from ICD-9 to ICD-10 introduced over 70,000 codes, including R53.83, providing more precise options for documenting patient conditions.
Avoid these mistakes when using this code:
Correctly using ICD-10 codes like R53.83 guarantees patients obtain appropriate care and coverage repayment. It additionally helps efficient billing workflows, minimizing delays and denials.
ICD-10 Code R53.83 (Fatigue) is an essential diagnostic tool for capturing nonspecific fatigue cases that lack a clear etiology. Recognized as a 2025 billable specific code, it plays a key role in ensuring accurate coding, compliant billing, and quality care documentation.
By maintaining detailed patient records and applying the correct ICD-10-CM codes, healthcare providers can support medical necessity, streamline reimbursement, and enhance overall patient outcomes.
If managing ICD-10-CM codes or claim denials feels overwhelming, partner with Cures Medical Billing, a trusted expert in ICD-10 compliance, claim optimization, and medical billing accuracy. Their experience ensures your practice remains compliant, efficient, and financially healthy.
R53.83 is a billable ICD-10 diagnosis code used for extreme fatigue, chronic tiredness, or unexplained lethargy that affects daily function.
Yes, R53.83 is fully billable and accepted by payers when supported by medical documentation of fatigue symptoms.
Tiredness is also coded as R53.83, particularly when the cause is non-specific or not due to a diagnosed disease.
Use R53.83 when documenting symptoms like lethargy, low stamina, or chronic lack of energy without a specific underlying cause.
No, if fatigue is secondary to another diagnosis (e.g., anemia, hypothyroidism, depression), use the primary condition as the main diagnosis and avoid R53.83 unless it’s an additional symptom.
Clinical notes should mention:
Depending on the clinical scenario, codes like Z73.89 (stress) or Z00.00 (routine exam) may accompany R53.83. Always follow payer policy.
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