2025 ICD-10-CM Diagnosis Code F31.4

Bipolar disorder, current episode depressed, severe, without psychotic features

  • F31.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Bipolar disord, crnt epsd depress, sev, w/o psych features
  • The 2025 edition of ICD-10-CM F31.4 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of F31.4 – other international versions of ICD-10 F31.4 may differ.

The following code(s) above F31.4 contain annotation back-references

 that may be applicable to F31.4:

  • F01-F99  Mental, Behavioral and Neurodevelopmental disorders
  • F31  Bipolar disorder

Approximate Synonyms

  • Affective disorder, bipolar, depressed, severe
  • Bipolar 1 disorder, depressed episode, severe
  • Bipolar 1 disorder, depressed episode, severe w mixed features
  • Bipolar 1 disorder, depressed, severe
  • Severe depressed bipolar disorder
  • Severe depressed bipolar i disorder
  • Severe mixed depressed bipolar i disorder

ICD-10-CM F31.4 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

Convert F31.4 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to F31.4:

  • Disorder (of) – see also Disease
    • bipolar (I) (seasonal) (type 1) F31.9
      • current (or most recent)
        • depressedF31.9
        • severe depression (without psychotic features) F31.4
  • Reaction – see also Disorder
    • depressive (single episode) F32.9
      • affective (single episode) F31.4
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