F31.9
BillableBipolar disorder, unspecified
HCC Category Mapping
V28HCC 154 — Bipolar Disorders
0.265V24HCC 59 — Major Depressive, Bipolar, and Paranoid Disorders
0.309ESRDHCC 59 — Major Depressive, Bipolar, and Paranoid Disorders
0.000RxHCCHCC 131 — Bipolar Disorders
0.000What This Code Means
Bipolar disorder diagnosed but without enough information to specify the type, severity, or current episode status.
Coding Tips
- •This is a non-specific code; use only when more specific bipolar codes cannot be determined from documentation
- •Query the provider for additional details to assign a more specific bipolar code
Clinical Significance
Bipolar disorder, unspecified is used when the provider documents a bipolar diagnosis but does not specify the type (I vs II), current episode (manic, depressed, mixed), or remission status. While this code captures the diagnosis for risk adjustment, it represents a documentation improvement opportunity. Querying for specificity improves both clinical care and coding accuracy.
Documentation Requirements
- ✓Provider documentation of bipolar disorder as a diagnosis
- ✓Current symptom status or episode type should be queried if not documented
- ✓Treatment plan consistent with bipolar disorder management
- ✓Medication list supporting the diagnosis (mood stabilizers, atypical antipsychotics)
- ✓Provider should be queried for: current episode type, severity, remission status, type I vs II
Commonly Confused Codes
F31.81 — Bipolar II disorder: Specific type that should be coded when documentedF31.0-F31.64 — Episode-specific bipolar codes: Use when current episode type and severity are documentedF39 — Unspecified mood disorder: Use when bipolar is not confirmed, only mood disorderF31.70 — Bipolar disorder, remission: Use when remission is documented even if episode type is unspecified