What is ICD-10 code F31.74?

F31.74 is the ICD-10-CM diagnosis code for Bipolar disorder, in full remission, most recent episode manic. Bipolar disorder where the patient is completely symptom-free, and their most recent mood episode was a severe period of abnormally elevated mood (manic episode). F31.74 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F31.74 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. F31.74 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. F31.74 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

What is the V28 vs V24 difference for F31.74?

CMS phased in the V28 risk adjustment model over payment years 2024 (33%), 2025 (67%), and 2026 (100%), replacing V24. V28 consolidates HCC categories, removes some lower-acuity conditions, and recalibrates RAF weights across the entire model. F31.74 was a payment HCC under V24 (Major Depressive, Bipolar, and Paranoid Disorders) but the V28 recalibration removed it from the risk adjustment model. Both models can still appear in legacy data and in payer-specific lookback periods.

What should coders know when reporting F31.74?

Full remission indicates sustained absence of manic and depressive symptoms; ensure documentation supports complete resolution Distinguish from partial remission codes which indicate some residual symptoms remain Because F31.74 maps to a payment HCC, the documentation must also satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's risk adjustment score.

F31.74: Bipolar disorder, in full remission, most recent episode manic — ICD-10 | Major

ICD-10-CM Code View

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Code lookupF31.74Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Mood [affective] disorders (F30-F39)

F31.74

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Bipolar disorder, in full remission, most recent episode manic

Bipolar disorder where the patient is completely symptom-free, and their most recent mood episode was a severe period of abnormally elevated mood (manic episode).

Buddy Insight

Bipolar disorder in full remission with the most recent episode being manic indicates complete resolution of symptoms from the last manic episode.

CMS-HCC V28

Not risk-adjusted for this model/period.

RAF 0

CMS-HCC V24

Mapped

HCC 59

Major Depressive, Bipolar, an...

RAF 0.309

ACA/HHS

Not risk-adjusted for this model/period.

RAF 0

ESRD/PACE

Mapped

HCC 59

Major Depressive, Bipolar, an...

RAF 0.0

RXHCC

Mapped

HCC 131

Bipolar Disorders

RAF 0.0

Code Trumping

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Code Book Path

Official

F31Bipolar disorder

F31.7Bipolar disorder, currently in remission

F31.74Bipolar disorder, in full remission, most recent episode manic

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for F31.74 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for F31.74 in this effective period.

Related Child Codes

Official

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

F31.75Bipolar disorder, in partial remission, most recent episode depressed

Includes

Official

ICD-10-CM does not list Includes notes for F31.74 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for F31.74 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F31.74 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F31.74 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F31.74 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Confirmed bipolar disorder diagnosis with documented manic episode history

Full remission explicitly documented with no current mood symptoms

Most recent episode identified as manic

Maintenance medication regimen

MEAT Support

HCC Buddy guidance

Confirmed bipolar disorder diagnosis with documented manic episode history

Full remission explicitly documented with no current mood symptoms

Most recent episode identified as manic

Maintenance medication regimen

Audit Caution

HCC Buddy guidance

Using full remission when the provider notes any residual manic symptoms

Stopping coding of bipolar disorder because the patient is in remission

Not specifying the most recent episode type, leading to use of the less specific F31.70

Confusing full remission with euthymia — they are clinically equivalent but coding requires specific terminology

Common Mistakes

HCC Buddy guidance

F31.73 — Bipolar disorder, partial remission, most recent manic: Residual symptoms present

F31.76 — Bipolar disorder, full remission, most recent depressed: Different episode type

F31.70 — Bipolar disorder, remission, unspecified episode: Less specific

Z86.59 — Personal history of mental and behavioral disorders: Bipolar is chronic, not historical

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is F31.74 an HCC code?

Yes. F31.74 maps to Major Depressive, Bipolar, and Paranoid Disorders under the V24 model but is not retained in V28.

HCC Category Mapping

V24HCC 59, Major Depressive, Bipolar, and Paranoid Disorders

0.309

ESRDHCC 59, Major Depressive, Bipolar, and Paranoid Disorders

0.000

RxHCCHCC 131, Bipolar Disorders

0.000

RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.

Work F31.74 in the Code Book — tabular path, V28 RAF, and MEAT checklist →

MEAT Criteria for F31.74

For F31.74to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed F31.74 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

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What This Code Means

F31.74 is the ICD-10-CM diagnosis code for bipolar disorder, in full remission, most recent episode manic. Bipolar disorder where the patient is completely symptom-free, and their most recent mood episode was a severe period of abnormally elevated mood (manic episode). F31.74 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering mood [affective] disorders (f30-f39).

Under the older CMS-HCC V24 model, F31.74 maps to Major Depressive, Bipolar, and Paranoid Disorders (HCC 59) with a community, non-dual, aged base RAF weight of 0.309. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.

Full remission indicates sustained absence of manic and depressive symptoms; ensure documentation supports complete resolution. Because F31.74 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F31.74 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Full remission indicates sustained absence of manic and depressive symptoms; ensure documentation supports complete resolution
•Distinguish from partial remission codes which indicate some residual symptoms remain

Clinical Significance

Bipolar disorder in full remission with the most recent episode being manic indicates complete resolution of symptoms from the last manic episode. The patient is currently stable and asymptomatic but requires continued psychiatric management to prevent recurrence. This code reflects the chronic nature of bipolar disorder even during stable phases.

Documentation Requirements

✓Confirmed bipolar disorder diagnosis with documented manic episode history
✓Full remission explicitly documented with no current mood symptoms
✓Most recent episode identified as manic
✓Maintenance medication regimen
✓Follow-up schedule for relapse monitoring

Commonly Confused Codes

•F31.73: Bipolar disorder, partial remission, most recent manic: Residual symptoms present
•F31.76: Bipolar disorder, full remission, most recent depressed: Different episode type
•F31.70: Bipolar disorder, remission, unspecified episode: Less specific
•Z86.59: Personal history of mental and behavioral disorders: Bipolar is chronic, not historical