F31.3
⚠ Non-billable
Bipolar disorder, current episode depressed, mild or moderate severity
ICD-10-CM · FY2026 · Mental, Behavioral and Neurodevelopmental Disorders
Code
F31.3
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Mental, Behavioral and Neurodevelopmental Disorders
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code F31.3?
ICD-10-CM code F31.3 represents Bipolar disorder, current episode depressed, mild or moderate severity. It is a non-billable header code requiring a more specific subcategory in the Mental, Behavioral and Neurodevelopmental Disorders chapter, effective October 1, 2025 – September 30, 2026.
Is F31.3 billable?
No. F31.3 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is F31.3 in?
F31.3 belongs to the Mental, Behavioral and Neurodevelopmental Disorders chapter (F01–F99) of ICD-10-CM.
Related codes in the F31 category
F31
Bipolar disorder
Non-billable
F31.0
Bipolar disorder, current episode hypomanic
Billable
F31.1
Bipolar disorder, current episode manic without psychotic features
Non-billable
F31.2
Bipolar disorder, current episode manic severe with psychotic features
Billable
F31.4
Bipolar disorder, current episode depressed, severe, without psychotic features
Billable
F31.5
Bipolar disorder, current episode depressed, severe, with psychotic features
Billable
F31.6
Bipolar disorder, current episode mixed
Non-billable
F31.7
Bipolar disorder, currently in remission
Non-billable
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