ICD-10-CM code · FY2027
F31.9 Bipolar disorder, unspecified
BillableValid for claims as a specific diagnosis code
About F31.9
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Coding notes for F31.9
Applicable to Other names for conditions reported with this code.
- Manic depression
Also applies, from F31 Bipolar disorder
Includes Conditions this code covers.
- bipolar I disorder
- bipolar type I disorder
- manic-depressive illness
- manic-depressive psychosis
- manic-depressive reaction
- seasonal bipolar disorder
Excludes1 Not coded here: never report these together with this code (use the code given instead).
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- cyclothymia (F34.0)
Chapter 5 notes (apply to every code in it)
Includes Conditions this code covers.
- disorders of psychological development
Related codes in F31
- F31.0 Bipolar disorder, current episode hypomanicBillable
- F31.1 Bipolar disorder, current episode manic without psychotic featuresHeader
- F31.2 Bipolar disorder, current episode manic severe with psychotic featuresBillable
- F31.3 Bipolar disorder, current episode depressed, mild or moderate severityHeader
- F31.4 Bipolar disorder, current episode depressed, severe, without psychotic featuresBillable
- F31.5 Bipolar disorder, current episode depressed, severe, with psychotic featuresBillable
- F31.6 Bipolar disorder, current episode mixedHeader
- F31.7 Bipolar disorder, currently in remissionHeader
- F31.8 Other bipolar disordersHeader
Latest research on bipolar disorder
- The Bipolar-at-risk criteria may help screen for young individuals at risk of bipolar disorder
- Smartphone-based self-management intervention may decrease relapses for patients with Bipolar Disorder Type 1
- Religion and spirituality dimensions may be beneficial in bipolar disorder symptoms
- The Scan by 2 Minute Medicine®: An Organ Donor Crisis, A Closer Look at Bipolar Disorder, What to know about Processed Foods, and Key Issues in Men’s Health
- Findings show that bipolar disorder-II treatments may be used to prevent cannabis use disorder
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See 2MM+ plansICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.
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