R53.83: Other fatigue

Billable ICD-10-CM code, FY2027

What ICD-10-CM says

Includes

  • Fatigue NOS
  • Lack of energy
  • Lethargy
  • Tiredness

Excludes2 (not part of R53.83; both may be coded)

  • exhaustion and fatigue due to depressive episode (F32.-)

Notes at R53.8, Other malaise and fatigue (they apply to every code under it)

Excludes1 (never coded with R53.83)

  • combat exhaustion and fatigue (F43.0)
  • congenital debility (P96.9)
  • exhaustion and fatigue due to excessive exertion (T73.3)
  • exhaustion and fatigue due to exposure (T73.2)
  • exhaustion and fatigue due to heat (T67.-)
  • exhaustion and fatigue due to pregnancy (O26.8-)
  • exhaustion and fatigue due to recurrent depressive episode (F33-)
  • exhaustion and fatigue due to senile debility (R54)

What R53.83 covers

R53.83 is a symptom code for fatigue when no more specific cause is documented. It includes fatigue NOS, lack of energy, lethargy and tiredness.

Primary care uses it often during a workup. Chronic fatigue, unspecified, is R53.82, and other malaise is R53.81. Myalgic encephalomyelitis/chronic fatigue syndrome has its own code, G93.32.

Billing and coding notes

R53.83 has an excludes2 for exhaustion and fatigue due to a depressive episode (F32.-). The R53.8 subcategory has an excludes1 list that sends fatigue from specific causes elsewhere, such as excessive exertion (T73.3), heat (T67.-), pregnancy (O26.8-) and senile debility (R54).

Like other symptom codes, R53.83 is not added when the fatigue is a routine part of a confirmed diagnosis. It fits a visit where fatigue is the problem and the cause is still unknown.

Related codes under R53.8

Questions about R53.83

What is the difference between R53.83 and R53.82?

R53.83 is fatigue or tiredness not described further. R53.82 is chronic fatigue, unspecified, for when the provider documents the fatigue as chronic.

Is R53.83 billable?

Yes. R53.83 is a complete code.

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ICD-10-CM in CloudMedico

In CloudMedico, a visit's diagnoses come from the current ICD-10-CM list. For US practices, the visit flags a code that isn't billable on its date, and a superbill made from an invoice carries the visit's diagnoses.

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ICD-10-CM FY2027, code descriptions file, CDC National Center for Health Statistics, effective October 1, 2026. ICD-10-CM is in the public domain.

Official text: ICD-10-CM FY2027 tabular list, CDC National Center for Health Statistics, effective October 1, 2026. The summary, notes and answers on this page are CloudMedico's.