F98.5
ICD-10BillableAdult onset fluency disorder
Official ICD-10-CM descriptor (FY2026)
Adult onset fluency disorder
F98.5 is valid for submission on a claim — CMS flags it as a billable, specific code.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- childhood onset fluency disorder (F80.81)
- dysphasia (R47.02)
- fluency disorder in conditions classified elsewhere (R47.82)
- fluency disorder (stuttering) following cerebrovascular disease (I69. with final characters -23)
- tic disorders (F95.-)
Related codes in F98
- F98.0Enuresis not due to a substance or known physiol condition
- F98.1Encopresis not due to a substance or known physiol condition
- F98.2Other feeding disorders of infancy and childhoodcategory
- F98.3Pica of infancy and childhood
- F98.4Stereotyped movement disorders
- F98.8Oth behav/emotn disord w onset usly occur in chldhd and adol
- F98.9Unsp behav/emotn disord w onst usly occur in chldhd and adol
Where this code sits
- Parent code
- F98
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.