Bipolar Disorder ICD-10

Disclaimer: This article is for informational and educational purposes only, and does not replace expert medical or mental health advice. It is not a tool for self or any other diagnosis. Bipolar disorder requires a comprehensive psychiatric and physical evaluation. So, always refer to a board-certified physician or mental health specialist for a proper diagnosis and treatment. In case of emergencies, call 9-1-1 in the U.S. or your local emergency number immediately.

If you are a clinician or case manager who deals with those struggling with bipolar disorder, having information regarding ICD-10 codes is crucial. Proper coding ensures proper diagnosis documentation, insurance reimbursement, and ongoing care. In this article, we will understand the full list of ICD-10 bipolar disorder codes and what these codes mean.

The International Classification of Diseases, Tenth Revision (ICD-10) is a standardized clinical coding system published by the World Health Organization (WHO). In the United States, clinicians use the ICD-10-CM (Clinical Modification), which is maintained by the Centers for Disease Control and Prevention (CDC) for diagnosis and billing purposes.

Mental health practitioners also refer to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5-TR), published by the American Psychiatric Association. The DSM-5 incorporates ICD-10-CM codes and provides detailed diagnostic criteria for conditions like bipolar disorder.

Using proper ICD-10 codes is not only a billing requirement, but it is also a clinical tool that ensures the right level of care is provided.

Bipolar disorder is classified under the ICD-10-CM section "Mood [Affective] Disorders" (F30–F39), specifically under subsection F31. The F31 family is the bipolar code family: every bipolar diagnosis is coded within F31, and the subcode is chosen by the type of the current (or, in remission, most recent) episode. The code F31.9 - Bipolar Disorder, Unspecified - is a billable code used when a clinician has confirmed a bipolar diagnosis but has not yet specified the type or present episode.

F31.9 is also listed under the synonym "manic depression" and falls within the Diagnostic-Related Group (MS-DRG) 885: Psychoses.

The 2026 edition of F31.9 became effective October 1, 2025.

Below is the complete list of ICD-10 bipolar disorder codes:

F31 - Bipolar Disorder (non-billable parent code)

It includes bipolar I disorder, manic-depressive illness, manic-depressive psychosis, manic-depressive reaction, and seasonal bipolar disorder:

• F31.0 - Bipolar disorder, current episode hypomanic
• F31.1* - Bipolar disorder, current episode manic without psychotic features
  • F31.10 - Unspecified
  • F31.11 - Mild
  • F31.12 - Moderate
  • F31.13 - Severe
• F31.2 - Bipolar disorder, current episode manic severe with psychotic features
• F31.3* - Bipolar disorder, current episode depressed, mild or moderate severity
  • F31.30 - Unspecified
  • F31.31 - Mild
  • F31.32 - Moderate
• F31.4 - Bipolar disorder, current episode depressed, severe, without psychotic features
• F31.5 - Bipolar disorder, current episode depressed, severe, with psychotic features
• F31.6* - Bipolar disorder, current episode mixed
  • F31.60 - Unspecified
  • F31.61 - Mild
  • F31.62 - Moderate
  • F31.63 - Severe, without psychotic features
  • F31.64 - Severe, with psychotic features
• F31.7* - Bipolar disorder, currently in remission
  • F31.70 - Most recent episode unspecified
  • F31.71 - Partial remission, most recent episode hypomanic
  • F31.72 - Full remission, most recent episode hypomanic
  • F31.73 - Partial remission, most recent episode manic
  • F31.74 - Full remission, most recent episode manic
  • F31.75 - Partial remission, most recent episode depressed
  • F31.76 - Full remission, most recent episode depressed
  • F31.77 - Partial remission, most recent episode mixed
  • F31.78 - Full remission, most recent episode mixed
• F31.8* - Other Bipolar Disorders
  • F31.81 - Bipolar II Disorder
  • F31.89 - Other bipolar disorder
• F31.9 - Bipolar Disorder, Unspecified (billable)

Please note that the codes marked with an asterisk (*) are not billable on their own.

Select the subcode that matches the client’s current episode, then add severity and psychotic features where the code requires them.

Two adjacent code families are easy to confuse with bipolar disorder:

• F30: Manic episode. Used for a single manic episode with no bipolar disorder diagnosis.
• F32: Major depressive disorder, single episode. Used for one depressive episode in a client with no history of mania or hypomania. For instance, F32.3 is "Major depressive disorder, single episode, severe with psychotic features." Recurrent depressive disorder is coded separately in F33 (for instance, F33.3, "Major depressive disorder, recurrent, severe with psychotic symptoms").

These families are related to F31 by Excludes1 notes in the ICD-10-CM Tabular List. An Excludes1 note means “NOT CODED HERE.” The two conditions are mutually exclusive and must not be reported together for the same client. In practice:

Once a client has a bipolar diagnosis, code the episode within F31. Do not add F30 for the manic episode or F32/F33 for the depressive episode; those episodes are already captured by the F31 subcode.

If a client coded with a single depressive episode (F32) later has a manic or hypomanic episode, the diagnosis changes to bipolar disorder and the coding moves to F31 rather than being reported alongside F32.

The same applies in reverse: F30, F32 and F33 carry Excludes1 notes pointing to F31.

Coders should confirm the exact Excludes1 wording for the fiscal year in use, since notes can be revised.

The ICD-10 characterizes bipolar disorder as a condition involving two or more episodes in which the client’s mood and energy levels are significantly disturbed. These episodes fluctuate between heightened mood, increased energy, and heightened activity (mania or hypomania) and lowered mood and decreased energy (depression).

While ICD’s classification of bipolar disorder is broader than the Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR) criterion, they both serve different purposes.

ICD is produced by the World Health Organization (WHO) with the aim of classifying mental health and behavioral disorders in order to reduce the burden globally, DSM has a more specific criteria - U.S. psychiatrists and other licensed mental health practitioners.

If you or someone you know is facing bipolar disorder, then seeking information is the first step toward healing. But bipolar disorder is also a chronic condition that requires ongoing care. Not all healing options require you to step away from your life. NuView Treatment Center’s structured outpatient options like partial hospitalization programs and intensive outpatient programs offer both structure and the flexibility to maintain your day-to-day routine.

Do not delay reaching out to our licensed and experienced mental health practitioners who will sit with you to understand your symptoms, needs, and goals to design a personalized treatment plan that meets you where you are.

Whenever you are ready, please call us at (323) 307-7997. We see you, and we want to hear from you.