ICD-10 Code for Bipolar Disorder
Also searched as bipolar 1, bipolar 2
The ICD-10-CM code for bipolar disorder is F31.9 — Bipolar disorder, unspecified. It is billable for FY2027.
Bipolar disorder ICD-10 codes at a glance
| Condition | Bipolar disorder |
|---|---|
| Code | F31.9 — Bipolar disorder, unspecified |
| Billable | Yes (F31.9) |
| Alphabetic Index entry | Disorder, bipolar |
| Code set | ICD-10-CM FY2027, valid October 1, 2026 – September 30, 2027 |
What changes the bipolar disorder code?
The Alphabetic Index lists these qualifiers under Disorder, bipolar. If the record documents one of them, the code changes. Verify the code in the Tabular List before reporting it.
| current episode › depressed | F31.9 | Bipolar disorder, unspecified |
| current episode › hypomanic | F31.0 | Bipolar disorder, current episode hypomanic |
| current episode › manic | F31.9 | Bipolar disorder, unspecified |
| current episode › mixed | F31.60 | Bipolar disorder, current episode mixed, unspecified |
| current episode › severe depression | F31.4 | Bipolar disorder, current episode depressed, severe, without psychotic features |
| in remission | F31.70 | Bipolar disorder, currently in remission, most recent episode unspecified |
| II | F31.81 | Bipolar II disorder |
| organic | F06.30 | Mood disorder due to known physiological condition, unspecified |
| single manic episode | F30.9 | Manic episode, unspecified |
| single manic episode › mild | F30.11 | Manic episode without psychotic symptoms, mild |
| single manic episode › moderate | F30.12 | Manic episode without psychotic symptoms, moderate |
| single manic episode › severe | F30.13 | Manic episode, severe, without psychotic symptoms |
| specified NEC | F31.89 | Other bipolar disorder |
What does the Tabular List say about F31.9?
The instructional notes that govern F31.9, including those it inherits from its category and chapter. An Excludes1 note means the two codes are never reported together.
Inclusion terms
Alternative wording in documentation that is classified to F31.9.
- Manic depression
Excludes1 — never code together — inherited from F31
The conditions below can never be reported together with F31.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 5
The conditions below are not part of F31.9, but a patient may have both at the same time. When documentation supports it, F31.9 and the excluded code may both be reported.
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Excludes2 — not included here — inherited from F31
The conditions below are not part of F31.9, but a patient may have both at the same time. When documentation supports it, F31.9 and the excluded code may both be reported.
- cyclothymia (F34.0)
Codes, descriptions and Index entries are from the official ICD-10-CM FY2027 release. Guideline text is quoted from the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027. A code must always be verified in the Tabular List before it is reported. Data sources