F98.5 Adult onset fluency disorder

Billable ICD-10-CM code, FY2026.

Excludes1 (never code together)

• 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.-)

Applies from F98 Other behavioral and emotional disorders with onset usually occurring in childhood and adolescence

Excludes2 (not included here)

• 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.-)

MS-DRG index

Defines the logic of DRG(s) 887 in MDC 19.

Approximate ICD-9-CM (GEMs)

• 307.0 Adult onset fluency disorder

Code annotations containing back-references to F98.5

Back-references to F98.5

• Type 1 Excludes: F80.81 Childhood onset fluency disorder ("adult onset fluency disorder (F98.5)")
• Type 1 Excludes: R47.82 Fluency disorder in conditions classified elsewhere ("adult onset fluency disorder (F98.5)")

Diagnosis Index entries for F98.5

• Disorder (of) › fluency › adult onset
• Stuttering › adult onset

Nearby codes

• F98.2 Other feeding disorders of infancy and childhood
• F98.21 Rumination disorder of infancy and childhood
• F98.29 Other feeding disorders of infancy and early childhood
• F98.3 Pica of infancy and childhood
• F98.4 Stereotyped movement disorders
• F98.5 Adult onset fluency disorder (this code)
• F98.8 Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence
• F98.9 Unspecified behavioral and emotional disorders with onset usually occurring in childhood and adolescence