ICDcodes.org
FY2027

F98.5 — Adult onset fluency disorder

Billable

Is F98.5 billable?

Yes — F98.5 is billable for FY2027. F98.5 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. F98.5 may be submitted for encounters from October 1, 2026 through September 30, 2027.

F98.5 at a glance

CodeF98.5
DescriptionAdult onset fluency disorder
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does F98.5 group to?

F98.5 sits in MDC 19 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 887Other Mental Disorder Diagnosesmedical

How is F98.5 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to F98.5. They show the wording a clinician may have documented, which often differs from the Tabular description.

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

Excludes1 — never code together

The conditions below can never be reported together with F98.5 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • 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.-)

Excludes2 — not included here — inherited from Chapter 5

The conditions below are not part of F98.5, but a patient may have both at the same time. When documentation supports it, F98.5 and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from F98

The conditions below are not part of F98.5, but a patient may have both at the same time. When documentation supports it, F98.5 and the excluded code may both be reported.

  • 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.-)

How long has F98.5 existed?

F98.5 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with F98.5?

ICD-10-CM declares these codes mutually exclusive with F98.5 — exactly one of each pair can be correct for a given encounter.

Which conditions are coded to F98.5?

What other codes are in the F98 family? (7)