What is ICD-10 code F98.8?

F98.8 is the ICD-10-CM diagnosis code for Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence. It belongs to the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99). F98.8 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. F98.8 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. F98.8 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. F98.8 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.

Which HCC does F98.8 map to under V28?

F98.8 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

What RAF reference is published for F98.8?

F98.8 has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

What is the V28 vs V24 difference for F98.8?

F98.8 has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

What documentation supports F98.8?

This is a residual code; use only when a more specific F98 code cannot be applied Clearly document the specific behavioral or emotional symptoms and their onset timeline in the medical record F98.8 is not a CMS-HCC V28 payment code in the verified current source, so MEAT is not the payment hook. Documentation still has to support the diagnosis if you report it.

2026 ICD-10-CM F98.8: Other specified behavioral

F98.8 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools

ICD-10-CM Code View

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Code lookupF98.8Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Mental, Behavioral and Neurodevelopmental disorders (F01-F99) / Behavioral and emotional disorders with onset usually occurring in childhood and adolescence (F90-F98)

F98.8

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

Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence

Behavioral or emotional disorders with typical onset in childhood or adolescence that do not fit into other specific diagnostic categories, such as selective mutism or other conduct-related issues.

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

F98Other behavioral and emotional disorders with onset usually occurring in childhood and adolescence

F98.8Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence

Inclusion Terms

Official

Excessive masturbation
Nail-biting
Nose-picking
Thumb-sucking

Excludes 2

Official

breath-holding spells (R06.89)
gender identity disorder of childhood (F64.2)
Kleine-Levin syndrome (G47.13)
obsessive-compulsive disorder (F42.-)
sleep disorders not due to a substance or known physiological condition (F51.-)

Related Child Codes

Official

F98.0Enuresis not due to a substance or known physiological condition

F98.1Encopresis not due to a substance or known physiological condition

F98.2Other feeding disorders of infancy and childhood

F98.3Pica of infancy and childhood

F98.4Stereotyped movement disorders

Includes

Official

ICD-10-CM does not list Includes notes for F98.8 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for F98.8 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for F98.8 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for F98.8 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for F98.8 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

This is a residual code; use only when a more specific F98 code cannot be applied

Clearly document the specific behavioral or emotional symptoms and their onset timeline in the medical record

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is F98.8 an HCC code?

No. F98.8 is a billable ICD-10-CM code with no mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models.

Code: F98.8
Description: Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

Coder workflow notes

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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

F98.8 is the ICD-10-CM diagnosis code for other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence. Behavioral or emotional disorders with typical onset in childhood or adolescence that do not fit into other specific diagnostic categories, such as selective mutism or other conduct-related issues. F98.8 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering behavioral and emotional disorders with onset usually occurring in childhood and adolescence (f90-f98).

F98.8 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

This is a residual code; use only when a more specific F98 code cannot be applied.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for F98.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•This is a residual code; use only when a more specific F98 code cannot be applied
•Clearly document the specific behavioral or emotional symptoms and their onset timeline in the medical record