F98.9 Unspecified behavioral and emotional disorders with onset usually occurring in childhood and adolescence

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Instructional notes

Chapter 5

Excludes2Not included here: the patient may have both; report both when both are present.

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Includes

disorders of psychological development

Section F90-F98

Notes

Codes within categories F90-F98 may be used regardless of the age of a patient. These disorders generally have onset within the childhood or adolescent years, but may continue throughout life or not be diagnosed until adulthood

F98

Excludes2Not included here: the patient may have both; report both when both are present.

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.-)

Chapter 5: Mental, Behavioral and Neurodevelopmental disorders · F90-F98 Behavioral and emotional disorders with onset usually occurring in childhood and adolescence (F90-F98)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.