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F98.5

Billable

Adult onset fluency disorder

F98.5 is the ICD-10-CM code for Adult onset fluency disorder. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
F01-F99
Parent
F98
Edition
FY2026

F01-F99 Mental, Behavioral and Neurodevelopmental disorders

What this means — in plain language

MedlinePlus · NIH

What is stuttering? Stuttering is a speech disorder . It involves interruptions in the flow of speech. These interruptions are called disfluencies. They may involve: Repeating sounds, syllables, or words Stretching out a sound Suddenly stopping in the middle of a syllable or word Sometimes, along with the stuttering, there may be nodding, rapid blinking, or trembling lips. The stuttering may be worse when you are…

Read more about Stuttering at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes1 — not coded here

  • •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.-)

Conditions mapped to this code

MedlinePlus · NIH
Bowel IncontinenceMovement Disorders

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code F98.5?
F98.5 is the ICD-10-CM code for "Adult onset fluency disorder". It falls under F01-F99 Mental, Behavioral and Neurodevelopmental disorders.
Is F98.5 a billable code?
Yes — F98.5 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from F98.5?
Excludes1 (not coded here): 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).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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