F31.78 — Bipolar disorder, in full remission, most recent episode mixed
F31.78 is a billable, specific ICD-10-CM code for bipolar disorder, in full remission, most recent episode mixed. It is valid for submission on a claim.
Risk adjustment
F31.78 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
F31.78 is named in 10 Medicare coverage policies — 8 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
- A56865Billing and Coding: Psychiatric Inpatient Hospitalizationnot covered
- A56645Billing and Coding: Controlled Substance Monitoring and Drugs of Abuse Testing
- A56937Billing and Coding: Psychiatry and Psychology Services
How F31.78 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to F31.78.
- Disorder›bipolar›in remission›in full remission›most recent episode›mixed
Related codes at this level
Codes that share F31.7. If F31.78 is not quite right, the correct code is usually one of these.
- F31.70Bipolar disorder, currently in remission, most recent episode unspecified
- F31.71Bipolar disorder, in partial remission, most recent episode hypomanic
- F31.72Bipolar disorder, in full remission, most recent episode hypomanic
- F31.73Bipolar disorder, in partial remission, most recent episode manic
- F31.74Bipolar disorder, in full remission, most recent episode manic
- F31.75Bipolar disorder, in partial remission, most recent episode depressed
- F31.76Bipolar disorder, in full remission, most recent episode depressed
- F31.77Bipolar disorder, in partial remission, most recent episode mixed
Questions about F31.78
- Is F31.78 a billable ICD-10-CM code?
- Yes. F31.78 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does F31.78 sit in the tabular list?
- Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Mood [affective] disorders (F30-F39).