2026 ICD-10-CM Diagnosis Code F31.4
Bipolar disorder, current episode depressed, severe, without psychotic features
About F31.4
Code
F31.4
Description
Bipolar disorder, current episode depressed, severe, without psychotic features
Billable
Yes — billable on its own
Parent code
F31 (Bipolar disorder)
Category
F30-F39 — Mood [affective] disorders
Set
ICD-10-CM 2026
Clinical context
Inherited from F31 (Bipolar disorder)
Bipolar disorder is characterized by recurring episodes of mania, hypomania, and depression. Document current episode (manic / hypomanic / depressed / mixed), severity, and presence of psychotic features.
Code details
Code attributes
- Non-billable/Non-specific code
Type 1 Excludes
- Bipolar disorder, single manic episode (F30.-)
- Major depressive disorder, single episode (F32.-)
- Major depressive disorder, recurrent (F33.-)
Coding rules
- Document current episode — Specify whether the current state is manic, hypomanic, depressed, mixed, or in remission. F31 has distinct codes for each.
- Record severity and features — Mild, moderate, severe; with or without psychotic features. These modifiers affect both code selection and treatment authorization.
- Track episode history — Recurrent episodes drive Bipolar I vs. II classification — document past episodes in the chart.
Codes
25 codes in F31- F31.0Bipolar disorder, current episode hypomanic
- F31.10Bipolar disorder, current episode manic without psychotic features, unspecified
- F31.11Bipolar disorder, current episode manic without psychotic features, mild
- F31.12Bipolar disorder, current episode manic without psychotic features, moderate
- F31.13Bipolar disorder, current episode manic without psychotic features, severe
- F31.2Bipolar disorder, current episode manic severe with psychotic features
- F31.30Bipolar disorder, current episode depressed, mild or moderate severity, unspecified
- F31.31Bipolar disorder, current episode depressed, mild
- F31.32Bipolar disorder, current episode depressed, moderate
- F31.4Bipolar disorder, current episode depressed, severe, without psychotic featuresYou're here
- F31.5Bipolar disorder, current episode depressed, severe, with psychotic features
- F31.60Bipolar disorder, current episode mixed, unspecified
- F31.61Bipolar disorder, current episode mixed, mild
- F31.62Bipolar disorder, current episode mixed, moderate
- F31.63Bipolar disorder, current episode mixed, severe, without psychotic features
- F31.64Bipolar disorder, current episode mixed, severe, with psychotic features
- F31.71Bipolar disorder, in partial remission, most recent episode hypomanic
- F31.72Bipolar disorder, in full remission, most recent episode hypomanic
- F31.73Bipolar disorder, in partial remission, most recent episode manic
- F31.74Bipolar disorder, in full remission, most recent episode manic
- F31.75Bipolar disorder, in partial remission, most recent episode depressed
- F31.76Bipolar disorder, in full remission, most recent episode depressed
- F31.81Bipolar II disorder
- F31.89Other bipolar disorder
- F31.9Bipolar disorder, unspecified
Sources
- Centers for Medicare & Medicaid Services — 2026 ICD-10-CM
- AAPC — ICD-10-CM Code Lookup
- CDC — ICD-10-CM Official Guidelines for Coding and Reporting
This reference is provided for billing and documentation guidance only. It is not medical advice. For clinical decision-making, consult the current CMS ICD-10-CM Official Guidelines for Coding and Reporting, and verify code applicability against the patient's documented clinical findings.
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