R53: Malaise and fatigue
R53.8: Other malaise and fatigue

excludes1
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)
R53.81: Other malaise
R53.82: Chronic fatigue, unspecified
R53.83: Other fatigue

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