Alphabetic Index FY2027

F31

Bipolar disorder

FY2027Chapter 5: Mental, Behavioral and Neurodevelopmental disorders/F30–F39 Mood [affective] disorders

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

F31 is a non-billable ICD-10-CM code category for bipolar disorder. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are F31.0 Bipolar disorder, current episode hypomanic; F31.1 Bipolar disorder, current episode manic without psychotic features; F31.2 Bipolar disorder, current episode manic severe with psychotic features; F31.3 Bipolar disorder, current episode depressed, mild or moderate severity and 6 more. Its coding notes include 3 Excludes1 entries and 2 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • bipolar disorder, single manic episode (F30.-)
  • major depressive disorder, single episode (F32.-)
  • major depressive disorder, recurrent (F33.-)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

This code
Also from chapter/block level (1 note)
Inherited from Chapter 5 Mental, Behavioral and Neurodevelopmental disorders
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Includes

Further defines or gives examples of the content of the category.

This code
  • bipolar I disorder
  • bipolar type I disorder
  • manic-depressive illness
  • manic-depressive psychosis
  • manic-depressive reaction
  • seasonal bipolar disorder
Also from chapter/block level (1 note)
Inherited from Chapter 5 Mental, Behavioral and Neurodevelopmental disorders
  • disorders of psychological development

More specific codes under F31 10