F31.4
ICD-10-CMBipolar disorder, current episode depressed, severe, without psychotic features
This code signifies a severe depressive episode occurring within the context of bipolar I disorder, where the patient is experiencing significant functional impairment. The depressive symptoms are prominent and debilitating, but there is an absence of hallucinations, delusions, or other psychotic phenomena. This diagnosis indicates a current major depressive episode following at least one manic or mixed episode.
Apply this code when documentation clearly indicates a diagnosis of bipolar I disorder with the patient currently experiencing a severe depressive episode. The medical record must explicitly state the absence of psychotic features. This code is appropriate when the patient's symptoms meet criteria for a major depressive episode and significantly impact their daily life, such as inability to work or maintain personal hygiene.
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