What is ICD-10 code F43.24?

F43.24 is the ICD-10-CM diagnosis code for Adjustment disorder with disturbance of conduct. It belongs to the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99). F43.24 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F43.24 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. F43.24 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. F43.24 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 F43.24?

F43.24 does not map to a payment HCC under either the CMS-HCC V28 risk adjustment model or the older V24 model. V28 reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Because neither model rewards F43.24 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a payment HCC.

What should coders know when reporting F43.24?

Ensure documentation clearly identifies the specific stressor or triggering life event (such as job loss, relationship problems, or relocation) to support medical necessity Verify that the disturbance of conduct is the primary manifestation; if anxiety or depression is more prominent, consider alternative F43 codes like F43.21 or F43.22

F43.24: Adjustment disorder with disturbance of conduct — ICD-10

ICD-10-CM Code View

HCC Buddy Code Card

Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.

Code lookupF43.24Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (F40-F48)

F43.24

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

Adjustment disorder with disturbance of conduct

This condition occurs when a person experiences emotional stress in response to a specific life event or change, and responds by acting out or behaving in ways that violate social norms or the rights of others. The behavioral problems develop within three months of the stressful event and are more severe than would normally be expected.

Buddy Insight

CMS-HCC V28

Not risk-adjusted for this model/period.

RAF 0

CMS-HCC V24

Not risk-adjusted for this model/period.

RAF 0

ACA/HHS

Not risk-adjusted for this model/period.

RAF 0

ESRD/PACE

Not risk-adjusted for this model/period.

RAF 0

RXHCC

Mapped

HCC 133

Personality Disorders, Anxiet...

RAF 0.0

Code Trumping

Basket needed

Compare selected patient codes to show trumped or trumps impact.

Code Book Path

Official

F43Reaction to severe stress, and adjustment disorders

F43.2Adjustment disorders

F43.24Adjustment disorder with disturbance of conduct

Inclusion Terms

Official

Culture shock
Grief reaction
Hospitalism in children

Excludes 2

Official

separation anxiety disorder of childhood (F93.0)

Related Child Codes

Official

F43.20Adjustment disorder, unspecified

F43.21Adjustment disorder with depressed mood

F43.22Adjustment disorder with anxiety

F43.23Adjustment disorder with mixed anxiety and depressed mood

F43.25Adjustment disorder with mixed disturbance of emotions and conduct

Includes

Official

ICD-10-CM does not list Includes notes for F43.24 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for F43.24 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F43.24 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F43.24 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F43.24 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Identifiable stressor documented

Behavioral disturbance as the predominant symptom (aggression, rule-breaking, truancy, vandalism, reckless driving, etc.)

Temporal relationship between stressor and behavioral changes

Behavior does not meet criteria for conduct disorder or antisocial personality disorder

MEAT Support

HCC Buddy guidance

Identifiable stressor documented

Behavioral disturbance as the predominant symptom (aggression, rule-breaking, truancy, vandalism, reckless driving, etc.)

Temporal relationship between stressor and behavioral changes

Behavior does not meet criteria for conduct disorder or antisocial personality disorder

Audit Caution

HCC Buddy guidance

Coding adjustment disorder with conduct disturbance when the behavioral pattern predates the stressor — consider conduct disorder instead

Using F43.24 when both emotional and behavioral symptoms are present — use F43.25 for the mixed presentation

Not documenting the specific stressor that precipitated the conduct disturbance

Failing to consider substance use as the underlying cause of behavioral changes rather than an adjustment reaction

Common Mistakes

HCC Buddy guidance

F91.1 (Conduct disorder, childhood-onset type) — Conduct disorder is a persistent pattern not reactive to a stressor; adjustment disorder is time-limited and reactive

F43.25 (Adjustment disorder with mixed disturbance of emotions and conduct) — Use F43.24 when conduct disturbance is primary without significant emotional symptoms

F43.20 (Adjustment disorder, unspecified) — Use the specific subtype when conduct problems are documented

F91.9 (Conduct disorder, unspecified) — Conduct disorder is more pervasive and persistent than adjustment disorder with conduct disturbance

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 F43.24 an HCC code?

No. F43.24 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

HCC Category Mapping

RxHCCHCC 133, Personality Disorders, Anxiety, and Other Specified Mental 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 F43.24 in the Code Book — tabular path, V28 RAF, and MEAT checklist →

MEAT Criteria for F43.24

For F43.24to 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 F43.24 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

Get the V28 RAF + MEAT cheat sheet

One printable page: confirm a code's V28 HCC status, its RAF weight, and the MEAT your note needs to make it stick. Free, no card.

Free PDF. No card. Unsubscribe anytime.

What This Code Means

F43.24 is the ICD-10-CM diagnosis code for adjustment disorder with disturbance of conduct. This condition occurs when a person experiences emotional stress in response to a specific life event or change, and responds by acting out or behaving in ways that violate social norms or the rights of others. The behavioral problems develop within three months of the stressful event and are more severe than would normally be expected. F43.24 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering anxiety, dissociative, stress-related, somatoform and other nonpsychotic mental disorders (f40-f48).

F43.24 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

F43.24 does not map to any HCC under V24 or V28. No ESRD mapping. RxHCC maps to RxHCC 133 at 0.0 weight. Non-risk-adjusting diagnosis. Coders reviewing F43.24 should check whether additional documentation would support a more specific child code in the same hierarchy that does map to a payment HCC, capturing the correct specificity is the highest-impact RAF improvement available within accurate coding.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for F43.24 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Ensure documentation clearly identifies the specific stressor or triggering life event (such as job loss, relationship problems, or relocation) to support medical necessity
•Verify that the disturbance of conduct is the primary manifestation; if anxiety or depression is more prominent, consider alternative F43 codes like F43.21 or F43.22

Clinical Significance

Adjustment disorder with disturbance of conduct represents a reactive behavioral disturbance in response to an identifiable stressor, manifesting primarily as conduct problems such as aggression, reckless behavior, truancy, or rule-breaking. This subtype is more common in adolescents and young adults and should be distinguished from conduct disorder, which is a more pervasive behavioral pattern.

Documentation Requirements

✓Identifiable stressor documented
✓Behavioral disturbance as the predominant symptom (aggression, rule-breaking, truancy, vandalism, reckless driving, etc.)
✓Temporal relationship between stressor and behavioral changes
✓Behavior does not meet criteria for conduct disorder or antisocial personality disorder
✓Functional impairment including legal, academic, or occupational consequences
✓Current treatment plan addressing behavioral issues

Commonly Confused Codes

•F91.1 (Conduct disorder, childhood-onset type): Conduct disorder is a persistent pattern not reactive to a stressor; adjustment disorder is time-limited and reactive
•F43.25 (Adjustment disorder with mixed disturbance of emotions and conduct): Use F43.24 when conduct disturbance is primary without significant emotional symptoms
•F43.20 (Adjustment disorder, unspecified): Use the specific subtype when conduct problems are documented
•F91.9 (Conduct disorder, unspecified): Conduct disorder is more pervasive and persistent than adjustment disorder with conduct disturbance