ICD-9 Code 296.64

Bipolar I disorder, most recent episode (or current) mixed, severe, specified as with psychotic behavior

Not Valid for Submission

296.64 is a legacy non-billable code used to specify a medical diagnosis of bipolar i disorder, most recent episode (or current) mixed, severe, specified as with psychotic behavior. This code was replaced on September 30, 2015 by its ICD-10 equivalent.

ICD-9: 296.64
Short Description:Bipol I cur mixed w psy
Long Description:Bipolar I disorder, most recent episode (or current) mixed, severe, specified as with psychotic behavior

Convert 296.64 to ICD-10

The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:

  • F31.64 - Bipolar disord, crnt episode mixed, severe, w psych features

Code Classification

  • Mental disorders (290–319)
    • Other psychoses (295-299)
      • 296 Affective psychoses

Information for Medical Professionals

Information for Patients


Bipolar Disorder

Also called: Manic-depressive illness

Bipolar disorder is a serious mental illness. People who have it go through unusual mood changes. They go from very happy, "up," and active to very sad and hopeless, "down," and inactive, and then back again. They often have normal moods in between. The up feeling is called mania. The down feeling is depression.

The causes of bipolar disorder aren't always clear. It runs in families. Abnormal brain structure and function may also play a role.

Bipolar disorder often starts in a person's late teen or early adult years. But children and adults can have bipolar disorder too. The illness usually lasts a lifetime.

If you think you may have it, tell your health care provider. A medical checkup can rule out other illnesses that might cause your mood changes.

If not treated, bipolar disorder can lead to damaged relationships, poor job or school performance, and even suicide. However, there are effective treatments to control symptoms: medicine and talk therapy. A combination usually works best.

NIH: National Institute of Mental Health

  • Bipolar disorder

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ICD-9 Footnotes

General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.