F31.81

Billable

Bipolar II disorder

F31.81 is the ICD-10-CM code for Bipolar II disorder. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
F01-F99
Parent
F31.8
Edition
FY2026

F01-F99 Mental, Behavioral and Neurodevelopmental disorders

Includes

  • Bipolar disorder, type 2

Frequently asked questions

What is ICD-10 code F31.81?
F31.81 is the ICD-10-CM code for "Bipolar II disorder". It falls under F01-F99 Mental, Behavioral and Neurodevelopmental disorders.
Is F31.81 a billable code?
Yes — F31.81 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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