ICD-10-CM · Chapter 5 · F01–F99
F31.81
Bipolar II disorder
Mental, behavioral and neurodevelopmental disorders
Quick facts
- Code
- F31.81
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 5 — Mental, behavioral and neurodevelopmental disorders
- Category
- F31 — Bipolar disorder
- Specificity
- 5 characters
How coders use this code
ICD-10-CM F31.81 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of bipolar ii disorder. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in F31
- F31Bipolar disorder
- F31.0Bipolar disorder, current episode hypomanic
- F31.1Bipolar disorder, current episode manic without psychotic features
- F31.10Bipolar disorder, current episode manic without psychotic features, unspecified
- F31.11Bipolar disorder, current episode manic without psychotic features, mild
- F31.12Bipolar disorder, current episode manic without psychotic features, moderate
- F31.13Bipolar disorder, current episode manic without psychotic features, severe
- F31.2Bipolar disorder, current episode manic severe with psychotic features
- F31.3Bipolar disorder, current episode depressed, mild or moderate severity
- F31.30Bipolar disorder, current episode depressed, mild or moderate severity, unspecified
- F31.31Bipolar disorder, current episode depressed, mild
- F31.32Bipolar disorder, current episode depressed, moderate
- F31.4Bipolar disorder, current episode depressed, severe, without psychotic features
- F31.5Bipolar disorder, current episode depressed, severe, with psychotic features
- F31.6Bipolar disorder, current episode mixed
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